1 - [(NH4)2SO4FeSO66H2O] is the formula of _______________________?
1 - [(NH4)2SO4FeSO66H2O] is the formula of _______________________?
Ferrous Ammonium sulphate
2 - _________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.
2 - _________ erosion is the removal of a thin layer of soil by water acting over the whole surface. This type of erosion damaged very fertile lands located on slopes, some of which have been eroded to a depth of about 15 cm.
Sheet erosion
3 - __________ particles range in diameter between 0.02 to 0.002 mm:
3 - __________ particles range in diameter between 0.02 to 0.002 mm:
Silt
4 - _________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?
4 - _________is probably the most important growth limiting factor in acid soils especially those having pH below 5.0-5.5?
Aluminium
5 - 1 bar is equal to_________?
5 - 1 bar is equal to_________?
All of these
6 - 1 meq of HCl is equal to_________?
6 - 1 meq of HCl is equal to_________?
14 mg of N
7 - 1 mg of H+ will be equal to_________?
7 - 1 mg of H+ will be equal to_________?
All of the above
8 - A = B (1-y) denotes A-value in which A is equal to:
8 - A = B (1-y) denotes A-value in which A is equal to:
Amount of available nutrients in soil
9 - A = RKLSCP denote universal soil loss equation in which K is equal to:
9 - A = RKLSCP denote universal soil loss equation in which K is equal to:
Soil credibility factor
10 - A and B horizon is called as_________?
10 - A and B horizon is called as_________?
None of the above
11 - A combination of many taxonomic units like soil series, phase or types is called:
11 - A combination of many taxonomic units like soil series, phase or types is called:
Soil association
12 - A complex mixture of brown amorphous and colloidal substances synthesized by various soil organisms is referred to as:
12 - A complex mixture of brown amorphous and colloidal substances synthesized by various soil organisms is referred to as:
Humus
13 - A compound toxic to crop formed by the thermal decomposition of urea is_________________?
13 - A compound toxic to crop formed by the thermal decomposition of urea is_________________?
Biurct (NH2CONH CONH2 H2O)
14 - A group of soils with same parent material but located at different positions of slope?
14 - A group of soils with same parent material but located at different positions of slope?
Catena
15 - A man made epipedon in many characters except P2O5 content (more than 250 ppm) is:
15 - A man made epipedon in many characters except P2O5 content (more than 250 ppm) is:
Anthropic epipedon
16 - A mineral horizon that is either too thin, too light in colour, too low in organic matter:
16 - A mineral horizon that is either too thin, too light in colour, too low in organic matter:
Ochric epipedon
17 - A pH value of 6.0 indicates that the soil reaction is:
17 - A pH value of 6.0 indicates that the soil reaction is:
Acidic
18 - A property of fluids by virtue of which it reduces the relative motion among different layers of fluid, is termed as:
18 - A property of fluids by virtue of which it reduces the relative motion among different layers of fluid, is termed as:
Soil viscosity
19 - A sequence of soil of about same age, derived from same parent material and occurring under similar climatic conditions but has different characteristics due to variation in relief and drainage is termed as:
19 - A sequence of soil of about same age, derived from same parent material and occurring under similar climatic conditions but has different characteristics due to variation in relief and drainage is termed as:
Catina
20 - A set of soils with same parent material, topography, climate and biota but different age is called_________?
20 - A set of soils with same parent material, topography, climate and biota but different age is called_________?
Chrono sequence
21 - A soil absorbs about _____ of incoming solar radiation:
21 - A soil absorbs about _____ of incoming solar radiation:
0.1
22 - A soil is categorized as saline when EC of saturation extract is______________________?
22 - A soil is categorized as saline when EC of saturation extract is______________________?
>4dsm-1
23 - A soil is classified as sodic soil when______________________?
23 - A soil is classified as sodic soil when______________________?
SAR is >13
24 - A soil which has pH less than 8.5, ESP less than 15 and EC more than 4 mmhos/cm at 25 ?C is called:
24 - A soil which has pH less than 8.5, ESP less than 15 and EC more than 4 mmhos/cm at 25 ?C is called:
Saline soil
25 - A soil with 20 me ______ 100 g ECE and me/100 gm exchangeable H will have a base saturation of:
25 - A soil with 20 me ______ 100 g ECE and me/100 gm exchangeable H will have a base saturation of:
0.25
26 - A soil with an ESP greater than 15 is usually classified as___________________?
26 - A soil with an ESP greater than 15 is usually classified as___________________?
Sodic soil
27 - A soil, which has pH more than 8.5, ESP more than 15 and EC less than 4 mmhos/cm at 25?C, is called:
27 - A soil, which has pH more than 8.5, ESP more than 15 and EC less than 4 mmhos/cm at 25?C, is called:
Alkaline soil
28 - A sub-surface horizon in which the accumulation of organic matter and clay occurs just below the plough:
28 - A sub-surface horizon in which the accumulation of organic matter and clay occurs just below the plough:
B horizon
29 - A sub-surface horizon with highly oxidized material and 1:1 type clay minerals is known as:
29 - A sub-surface horizon with highly oxidized material and 1:1 type clay minerals is known as:
Oxic horizon
30 - A surface horizon, which has very high organic matter, is:
30 - A surface horizon, which has very high organic matter, is:
Hisitic epipedon
31 - A thick dark coloured horizon, which has high, base saturation (50% or more), high organic matter content and with strong soil structure is called :
31 - A thick dark coloured horizon, which has high, base saturation (50% or more), high organic matter content and with strong soil structure is called :
Mollie epipedon
32 - A treeless artic plain is called as___________________?
32 - A treeless artic plain is called as___________________?
Tundra
33 - A unit of soil classification as well as soil mapping which is similar to soil series in most of the soil properties except one or two but the area of such a unit is not enough to establish it as a separate series and show on a soil map, is known as:
33 - A unit of soil classification as well as soil mapping which is similar to soil series in most of the soil properties except one or two but the area of such a unit is not enough to establish it as a separate series and show on a soil map, is known as:
Soil variant
34 - A vertical section of soil body, which shows different layer, is known as:
34 - A vertical section of soil body, which shows different layer, is known as:
Soil profile
35 - A vertical section of the soil through all its horizons are extending into the parent material is known as:
35 - A vertical section of the soil through all its horizons are extending into the parent material is known as:
Profile
36 - A well developed soil has:
36 - A well developed soil has:
All of the above
37 - AAS stands for:___________?
37 - AAS stands for:___________?
Atomic absorption spectrophotometer
38 - About 40% of the total area of Pakistan is affected by wind erosion. this includes:_________?
38 - About 40% of the total area of Pakistan is affected by wind erosion. this includes:_________?
All of the above
39 - Absorbed hydrogen and aluminium are largely responsible for:
39 - Absorbed hydrogen and aluminium are largely responsible for:
Soil acidity
40 - Absorption of ions in plants occurring with the aid of metabolic energy is termed:
40 - Absorption of ions in plants occurring with the aid of metabolic energy is termed:
Active absorption
41 - According to ""Universal Soils Loss equation"the factors on which ration of erosion depend are:
41 - According to ""Universal Soils Loss equation"the factors on which ration of erosion depend are:
Rainfall, soil credibility, slope length, slope gradient, crop management, erosion control practice
42 - According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation proce
42 - According to a latest research, Pakistan is predominantly a dryland country; 80% of its land area is arid and semi arid, 12% sub-humid and 8% under humid climate. Thus , soils of arid & semi-arid regions are vulnerable to a wide range of degradation proce
All of the above
43 - According to FCO, the maximum permissible total N content in the form of urea in DAP should be:_________?
43 - According to FCO, the maximum permissible total N content in the form of urea in DAP should be:_________?
0.025
44 - According to land capability classification, the soils, which are not suitable for crop cultivation, belong to:
44 - According to land capability classification, the soils, which are not suitable for crop cultivation, belong to:
Class VIII
45 - According to one estimate, wind and water erosion over ______ % of the Pakistan€™s total area?
45 - According to one estimate, wind and water erosion over ______ % of the Pakistan€™s total area?
0.76
46 - According to the carrier hypothesis the specific carriers are present on:
46 - According to the carrier hypothesis the specific carriers are present on:
Plasma lemma
47 - According to U.S.D.A. soil classification, the size of fine sand should be in between:
47 - According to U.S.D.A. soil classification, the size of fine sand should be in between:
0.1-0.25 mm
48 - According to WAPDA, the ECe of the salt free soil should remain__________________?
48 - According to WAPDA, the ECe of the salt free soil should remain__________________?
< 4 dsm-1
49 - Accumulation of Al and Fe oxides and clays coming from the upper profile layers:
49 - Accumulation of Al and Fe oxides and clays coming from the upper profile layers:
Zone of Illuviation
50 - Accumulation of soluble salts in soil________?
50 - Accumulation of soluble salts in soil________?
Salinization
51 - Accumulation of soluble salts root zone is known as____________________?
51 - Accumulation of soluble salts root zone is known as____________________?
Salininzation
52 - Acid soil contain pH____________________?
52 - Acid soil contain pH____________________?
<7
53 - Acid soils can be reclaimed by:
53 - Acid soils can be reclaimed by:
CaCO3
54 - Acid soils of the world€™s arable comprise up to_____________________?
54 - Acid soils of the world€™s arable comprise up to_____________________?
0.4
55 - Active soil forming factors would include:
55 - Active soil forming factors would include:
Time, topography and climate
56 - Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?
56 - Addition of sodium hexametaphosphate in soil for determination of soil texture causes__________________?
Dispersion of soil particles
57 - Addition of the following material makes it possible to take good crop in sodic soil:
57 - Addition of the following material makes it possible to take good crop in sodic soil:
Gypsum
58 - Age of Earth is_____________________?
58 - Age of Earth is_____________________?
4.5 billion years
59 - Alfisol soils are mostly ______ in respect of their fertility and are used either as crop land or forest or range land:
59 - Alfisol soils are mostly ______ in respect of their fertility and are used either as crop land or forest or range land:
High
60 - Algal photosynthesis increases pH of water and releases___________________?
60 - Algal photosynthesis increases pH of water and releases___________________?
CO2
61 - Alkali soils are generally found in:
61 - Alkali soils are generally found in:
Arid and semi-arid climate
62 - All potassium fertilizers are physiologically alkaline, there reactionwith soils is:
62 - All potassium fertilizers are physiologically alkaline, there reactionwith soils is:
Neutral
63 - All the SSP and some nitrophos are are manufactured locally by the National Fertilizer Corporation (NFC): SSP at_________?
63 - All the SSP and some nitrophos are are manufactured locally by the National Fertilizer Corporation (NFC): SSP at_________?
All of these
64 - Alluvial soils are rich in:
64 - Alluvial soils are rich in:
K2O, P2O5 and Lime
65 - Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?
65 - Although some acid soils do exist in the northern mountainous regions of Pakistan (Mansehra, Sawat, Dir). Almost all cultivated soils of the country are ________________, with high base saturation and low organic matter content (generally less than 1%)?
both A & C
66 - Ammonia lost through volatilization in significant quantities from:
66 - Ammonia lost through volatilization in significant quantities from:
Acidic soils
67 - Ammonium and potassium ions are apparently just the right size to fit into the cavities between the crystal units of:
67 - Ammonium and potassium ions are apparently just the right size to fit into the cavities between the crystal units of:
Vermiculite
68 - Ammonium sulphate contains:
68 - Ammonium sulphate contains:
24% sulphur
69 - Ammonium sulphate is preferred for nitrogen application in groundnut because it also provides:
69 - Ammonium sulphate is preferred for nitrogen application in groundnut because it also provides:
Copper
70 - Among the fruits, lemon, apple, plum have been placed in the _____ salt tolerance group.
70 - Among the fruits, lemon, apple, plum have been placed in the _____ salt tolerance group.
Low
71 - Amount of heat required to raise temperature of 1 gm soil from 14 to 15 ?C is known as:
71 - Amount of heat required to raise temperature of 1 gm soil from 14 to 15 ?C is known as:
Heat capacity
72 - Amount of K in felspar and mica is about:
72 - Amount of K in felspar and mica is about:
0.6
73 - Amount of K in plants is:
73 - Amount of K in plants is:
0.3 to 6.0%
74 - Amount of K in soil plough layer is about:
74 - Amount of K in soil plough layer is about:
10,000-70,000 kg/ha
75 - An abrupt change in textural class or no continuity found between B and C horizon is termed as:
75 - An abrupt change in textural class or no continuity found between B and C horizon is termed as:
Lithological discontinuity
76 - An argillic sub-surface horizon with high E.S.P. (more than 15) is called:
76 - An argillic sub-surface horizon with high E.S.P. (more than 15) is called:
Natric horizon
77 - An epipedon, which has dark colour low in base saturation, is called:
77 - An epipedon, which has dark colour low in base saturation, is called:
Umbric epipedon
78 - An expression of the intensity of the basic or a acidic condition of a liquid or of soil is called_____________________?
78 - An expression of the intensity of the basic or a acidic condition of a liquid or of soil is called_____________________?
pH
79 - An intrazonal group of dark calcareous soils high in clay and having mainly montmorillonitic type clay are called as:________?
79 - An intrazonal group of dark calcareous soils high in clay and having mainly montmorillonitic type clay are called as:________?
Regur
80 - An ion or molecule in the coordination sphere central ion is called__________________?
80 - An ion or molecule in the coordination sphere central ion is called__________________?
Ligand
81 - Anaerobic environment of paddy soil is responsible for gaseous loss of fertilizer nitrogen by:
81 - Anaerobic environment of paddy soil is responsible for gaseous loss of fertilizer nitrogen by:
Denitrification
82 - Anion exchange capacity is found maximum in the case of:
82 - Anion exchange capacity is found maximum in the case of:
Kaolinite
83 - Antioxidant is used to reduce the process of_____________________?
83 - Antioxidant is used to reduce the process of_____________________?
Oxidation
84 - Apatite is a group of minerals which mainly contains:
84 - Apatite is a group of minerals which mainly contains:
Titanium
85 - Application of nitrogen in pulses at the time of planting is known as:
85 - Application of nitrogen in pulses at the time of planting is known as:
Starter dose
86 - Aridisols soils re found in the region of:
86 - Aridisols soils re found in the region of:
Arid
87 - Arrangement of soil particles is referred to as:
87 - Arrangement of soil particles is referred to as:
Soil structure
88 - As plants grow to maturity, the concentration of plant nutrients changes. What kind of change occurs in respect of N, P, K, Ca and Mg?
88 - As plants grow to maturity, the concentration of plant nutrients changes. What kind of change occurs in respect of N, P, K, Ca and Mg?
Concentration of all 5 elements decreases
89 - Aspergillus niger test is used for:
89 - Aspergillus niger test is used for:
Cu & Mg
90 - Association of two microorganisms in which one is benefited while other remains unaffected is known as:________?
90 - Association of two microorganisms in which one is benefited while other remains unaffected is known as:________?
Commensalism
91 - At 1 x 10-9 H+ concentration, what will be the pH value?
91 - At 1 x 10-9 H+ concentration, what will be the pH value?
9
92 - Attraction between similar particles is called____________________?
92 - Attraction between similar particles is called____________________?
Cohesion
93 - Auxins promote___________________?
93 - Auxins promote___________________?
Cell elongation
94 - Availability of Zn is higher to crops in:_________?
94 - Availability of Zn is higher to crops in:_________?
Acid soils
95 - Available form of phosphorus ions is:
95 - Available form of phosphorus ions is:
Phosphoric
96 - Available nitrogen of less than 280 kg/hectare is considered:
96 - Available nitrogen of less than 280 kg/hectare is considered:
Low
97 - Available phosphorous of less than 10 kg/ha of soil is considered as:
97 - Available phosphorous of less than 10 kg/ha of soil is considered as:
Low
98 - Available phosphorous of more than 25 kg/ha of soil is considered as:
98 - Available phosphorous of more than 25 kg/ha of soil is considered as:
High
99 - Available potassium of more than 280 kg/ha in soil is considered:
99 - Available potassium of more than 280 kg/ha in soil is considered:
High
100 - Available water is held between?
100 - Available water is held between?
Field capacity to wilting point
101 - Available Zn in the soil, can be determined by using the solution of:
101 - Available Zn in the soil, can be determined by using the solution of:
EDTA + (NH4)2 CO7
102 - Azospirillum fixes nitrogen mainly in:
102 - Azospirillum fixes nitrogen mainly in:
Sorghum
103 - Azotobacter and Rhzobium bacteria are:
103 - Azotobacter and Rhzobium bacteria are:
Nitrogen fixers
104 - Azotobacter sp. Fix atmospheric nitrogen:
104 - Azotobacter sp. Fix atmospheric nitrogen:
In free soil
105 - Bacteria present in the root nodules of legumes plants is:
105 - Bacteria present in the root nodules of legumes plants is:
Thizobium
106 - Barley, rape and cotton are _____ salt tolerant:
106 - Barley, rape and cotton are _____ salt tolerant:
High
107 - Based on their diameters, soil pores are divided into:_________?
107 - Based on their diameters, soil pores are divided into:_________?
Both A & B
108 - Being a soil scientist, do you know which is the popular book of soil science of Nyle.C.brady, 14th edition available in markets:
108 - Being a soil scientist, do you know which is the popular book of soil science of Nyle.C.brady, 14th edition available in markets:
The nature and properties of soil
109 - BGA was discovered as a nitrogen fixer in paddy field by ?
109 - BGA was discovered as a nitrogen fixer in paddy field by ?
P.K dey
110 - Biochemical reduction of nitrate to nitrite or gaseous nitrogen is called ________________________?
110 - Biochemical reduction of nitrate to nitrite or gaseous nitrogen is called ________________________?
Denitrification
111 - Biofertilizer is a:
111 - Biofertilizer is a:
Culture having the desired strain of microorganisms
112 - Biological nitrogen fixation is:
112 - Biological nitrogen fixation is:
Both (a) & (b)
113 - Biological Weathering involves:
113 - Biological Weathering involves:
All of these
114 - Black and dark coloured soils absorb _____ heat from sublight than light coloured soils:
114 - Black and dark coloured soils absorb _____ heat from sublight than light coloured soils:
More
115 - Black soils ______ in organic matter and high in bases:
115 - Black soils ______ in organic matter and high in bases:
Poor
116 - Black soils are _____ when wet and very hard when dry:
116 - Black soils are _____ when wet and very hard when dry:
Very soft
117 - Black soils have ______ amount of lime and P:
117 - Black soils have ______ amount of lime and P:
High
118 - Blue-green algae grows best in:
118 - Blue-green algae grows best in:
Jute
119 - Bone meal is well suited for:
119 - Bone meal is well suited for:
Acidic soils
120 - Boron concentration is irrigation water is considered safe only upto_________________?
120 - Boron concentration is irrigation water is considered safe only upto_________________?
0.7 ppm
121 - Bray suggested certain modification in the Mischerlich equation:
121 - Bray suggested certain modification in the Mischerlich equation:
dy/dx = (A - Y)C
122 - Browning disease of rice is a_________?
122 - Browning disease of rice is a_________?
Physiological disease
123 - Buffer solution is a solution which resist change in __________________ ?
123 - Buffer solution is a solution which resist change in __________________ ?
pH
124 - Buffering capacity of soil means resistance to a change in:
124 - Buffering capacity of soil means resistance to a change in:
Soil pH
125 - Bulk density is denoted by:
125 - Bulk density is denoted by:
Weight of the given soil sample volume of the same soil sample (g/c.c.)
126 - By the formulae d = PW x As x D/100 we can calculate:
126 - By the formulae d = PW x As x D/100 we can calculate:
Depth of irrigation water
127 - C:N ratio of microorganism:
127 - C:N ratio of microorganism:
N0ne of the above
128 - C12H12N-NaO8S2 is the chemical formula of ____________________?
128 - C12H12N-NaO8S2 is the chemical formula of ____________________?
Azomethine H
129 - Ca Al2 Si3 O8 is the formula of:
129 - Ca Al2 Si3 O8 is the formula of:
Anorthite
130 - Calcite, Dolomite and Hornblends are:
130 - Calcite, Dolomite and Hornblends are:
Calcium minerals
131 - Calcium chloride is probably the most readily available source of soluble calcium, but seldom used due to:
131 - Calcium chloride is probably the most readily available source of soluble calcium, but seldom used due to:
High cost
132 - Calcium cynamide contain:
132 - Calcium cynamide contain:
21 to 26% nitrogen
133 - Calcium is essential for:
133 - Calcium is essential for:
Both of these
134 - Capillary movement of water is complemented by:
134 - Capillary movement of water is complemented by:
Root extension
135 - Carbon requirement of the plant is met by absorbing:
135 - Carbon requirement of the plant is met by absorbing:
Carbon dioxide from atmosphere
136 - Cation exchange capacity is expressed as:
136 - Cation exchange capacity is expressed as:
Meq/100 g
137 - Cation exchange capacity is found minimum in the case of:
137 - Cation exchange capacity is found minimum in the case of:
Kaolinite
138 - Cation exchange capacity is highest in:
138 - Cation exchange capacity is highest in:
Montmorillonite
139 - Chemical weathering governs mostly by the process:
139 - Chemical weathering governs mostly by the process:
All of these
140 - Chitin and steroids are_____________________?
140 - Chitin and steroids are_____________________?
Carbohydrates
141 - Chlorite and hornblend are:
141 - Chlorite and hornblend are:
Mg minerals
142 - Chlorosis is observed in upland rice due to deficiency of:
142 - Chlorosis is observed in upland rice due to deficiency of:
Fe
143 - Chlorosis refers to the:
143 - Chlorosis refers to the:
Yellowing of the leaf tissues
144 - Chromium (Cr) is a____________________?
144 - Chromium (Cr) is a____________________?
Heavy metal
145 - Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ________________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:
145 - Clay and humus particles are referred to as colloids and are less than 0.002mm. Due to their small size, colloids have ________________ surface area which provides surface for adsorption, catalysis, precipitation and microbial colonization:
Extremely high
146 - Clay are classified as:
146 - Clay are classified as:
Socondary minerals
147 - Clear water with organic matter or sediment and minimum biological activity is known as__________________?
147 - Clear water with organic matter or sediment and minimum biological activity is known as__________________?
Oligotrophic
148 - Color of fertile soil is_____________________?
148 - Color of fertile soil is_____________________?
Black
149 - Color off basic matic rock is_____________________?
149 - Color off basic matic rock is_____________________?
Dark colored
150 - Combination of soil genesis and classification is collectively called_________?
150 - Combination of soil genesis and classification is collectively called_________?
Pedology
151 - Common soils found in Pakistan are___________________?
151 - Common soils found in Pakistan are___________________?
All the above
152 - Commonly used method for enumeration of soil microbial population is:
152 - Commonly used method for enumeration of soil microbial population is:
Dilution plate technique
153 - Composition of igneous rock is determined by___________?
153 - Composition of igneous rock is determined by___________?
Composition of molten magma
154 - Conservation agriculture improves the water use efficiency of dryland systems. It has components:
154 - Conservation agriculture improves the water use efficiency of dryland systems. It has components:
all of the above
155 - Conservation tillage tends to encourage:
155 - Conservation tillage tends to encourage:
High microbial population
156 - Continuous heavy rainfall leads to the formation of:
156 - Continuous heavy rainfall leads to the formation of:
Acid soil
157 - Corrositivity of water is an indication of___________________?
157 - Corrositivity of water is an indication of___________________?
Both a & b
158 - Criteria of essentiality is given by:
158 - Criteria of essentiality is given by:
Arnon
159 - C-spacing of kaolinite is:
159 - C-spacing of kaolinite is:
7.39 A
160 - Cyclic salts are mostly of ______________________?
160 - Cyclic salts are mostly of ______________________?
Cl-
161 - DAP fertilizer available in Pakistan contains__________________________?
161 - DAP fertilizer available in Pakistan contains__________________________?
18% N & 46% P2O5
162 - DAP requirement for supplying 45 Kg N and 115 kg P2O5 to one-hectare peanut crops:
162 - DAP requirement for supplying 45 Kg N and 115 kg P2O5 to one-hectare peanut crops:
200 kg
163 - Decomposition of the organic matter in submerged soil is carried out by?
163 - Decomposition of the organic matter in submerged soil is carried out by?
None of the above
164 - Deep percolation from a soil profile is generally measured by a device known as_____________________?
164 - Deep percolation from a soil profile is generally measured by a device known as_____________________?
Lysimeter
165 - Deficiency of B can be corrected through application of chemical fertilizer of_________________?
165 - Deficiency of B can be corrected through application of chemical fertilizer of_________________?
All the above
166 - Deficiency of iron results in typical interveinal chlorosis in which:
166 - Deficiency of iron results in typical interveinal chlorosis in which:
Younger leaves are first affected
167 - Deficiency of Mo in citrus plants results in:
167 - Deficiency of Mo in citrus plants results in:
Yellow spots
168 - Deficiency of several elements is exhibited first in the apical region of the growing part due to there:
168 - Deficiency of several elements is exhibited first in the apical region of the growing part due to there:
Immobile nature
169 - Degree of soil salinity is indicated by its:
169 - Degree of soil salinity is indicated by its:
Total soluble salt content
170 - Denitrification is more in:
170 - Denitrification is more in:
Waterlogged soils
171 - Depending on the percentage of sand, silt, clay, soils are divided into _______ textural classes:
171 - Depending on the percentage of sand, silt, clay, soils are divided into _______ textural classes:
12
172 - Depth of cultivated soils is upto:
172 - Depth of cultivated soils is upto:
15 cm
173 - Desert soils are found in:
173 - Desert soils are found in:
Arid and semi arid region
174 - Diameter of clay particle is:
174 - Diameter of clay particle is:
Less than 0.002 mm
175 - Different soil separate may be determined with the help of:
175 - Different soil separate may be determined with the help of:
International pipette method
176 - Diphenyl amine is an indicator, which is used in determination of:
176 - Diphenyl amine is an indicator, which is used in determination of:
Organic carbon
177 - Dominant organisms found in a compost pit are:
177 - Dominant organisms found in a compost pit are:
Mesophilic
178 - Downward movement of food synthesized in leaves takes place through:
178 - Downward movement of food synthesized in leaves takes place through:
Phloem
179 - DQ = DA (dc/dx) dt is the:
179 - DQ = DA (dc/dx) dt is the:
Fick's law
180 - During decomposition of organic matter, inititial decomposition is dominated by:__________?
180 - During decomposition of organic matter, inititial decomposition is dominated by:__________?
Bacteria
181 - Each layer of phyllosilicates is composed of two types of sheets:
181 - Each layer of phyllosilicates is composed of two types of sheets:
Both A & C
182 - Earth worms present in the soil:
182 - Earth worms present in the soil:
Increase soil fertility
183 - Earth's total weight is contributed by different spheres as:
183 - Earth's total weight is contributed by different spheres as:
93.06% lithosphere, 6.91% hydrosphere, 0.03% atmosphere
184 - Efficiency of applied fertilizers in rice crop is:
184 - Efficiency of applied fertilizers in rice crop is:
10-75%
185 - Efficiency of applied fertilizers in whet crop is:
185 - Efficiency of applied fertilizers in whet crop is:
44-64%
186 - Efficiency of symbiotic biological nitrogen fixation depends on:
186 - Efficiency of symbiotic biological nitrogen fixation depends on:
Ecological conditons
187 - Electrical conductivity of saturated paste is written as____________________?
187 - Electrical conductivity of saturated paste is written as____________________?
ECs
188 - Elements essentially required for growth of all plants species are___________________?
188 - Elements essentially required for growth of all plants species are___________________?
16
189 - Elements, which are absorbed from the soil, are known as:
189 - Elements, which are absorbed from the soil, are known as:
Plant nutrients
190 - Eluviations refers to:
190 - Eluviations refers to:
Removal of clay and sesquioxide from above horizons to lower horizons
191 - Entry of K+ ions through root hair having to low K+ ion content in the soil is mediated through:
191 - Entry of K+ ions through root hair having to low K+ ion content in the soil is mediated through:
Ion exchange
192 - Equation of Ozone is________________________?
192 - Equation of Ozone is________________________?
O2 + O =O3
193 - Etridiazol and nitrapyrin ______ oxidation of ammodia to nitrates:
193 - Etridiazol and nitrapyrin ______ oxidation of ammodia to nitrates:
Inhibits
194 - Examples of cumulose materials are:
194 - Examples of cumulose materials are:
Peat and Muck
195 - Examples of macrobiota are______________________?
195 - Examples of macrobiota are______________________?
Enchytrids
196 - Examples of micro biota are____________________?
196 - Examples of micro biota are____________________?
Both a & b
197 - Examples of prismatic structures are found in the _______________ mapped in KPK and the northern part of Punjab.
197 - Examples of prismatic structures are found in the _______________ mapped in KPK and the northern part of Punjab.
All of the above
198 - Exposure of the manures to rains causes highest loss of___________?
198 - Exposure of the manures to rains causes highest loss of___________?
N
199 - Extraction of humic substance can be done by______________________?
199 - Extraction of humic substance can be done by______________________?
NaOH
200 - Farm yard manure:
200 - Farm yard manure:
Recommended for salinity reclamation
201 - Father of agricultural chemistry is___________________?
201 - Father of agricultural chemistry is___________________?
Vonliebig
202 - Father of Soil Microbiology is:
202 - Father of Soil Microbiology is:
S.N. Winogradsky
203 - Fe is trivalent in which of the chemical compound:
203 - Fe is trivalent in which of the chemical compound:
Fe (NO3)3
204 - Felsic rocks consists of___________________?
204 - Felsic rocks consists of___________________?
Quartz & Feldspars
205 - Ferrows oxide can be obtained during chemical process weathering under the heads of:
205 - Ferrows oxide can be obtained during chemical process weathering under the heads of:
Oxidation
206 - Fine-graned rocks formed on earth crust are called____________________?
206 - Fine-graned rocks formed on earth crust are called____________________?
Extrusive rock
207 - First 15 cm layer of land, which is ploughed for cultivation of crop, is called:
207 - First 15 cm layer of land, which is ploughed for cultivation of crop, is called:
Furrow slice
208 - following are types of weathering:
208 - following are types of weathering:
both a and c
209 - For managing acid soils following chemical amendment is quite essential:
209 - For managing acid soils following chemical amendment is quite essential:
CaO
210 - For reclamation of alkali soil, gypsum is mixed in the soil at the depth of:
210 - For reclamation of alkali soil, gypsum is mixed in the soil at the depth of:
30 cm
211 - For the determination of P by Bray method, the ratio of soil and solution should be:
211 - For the determination of P by Bray method, the ratio of soil and solution should be:
1;10
212 - Force (dynes) acting on the surface of water at right angle is one cm of length is called:
212 - Force (dynes) acting on the surface of water at right angle is one cm of length is called:
Surface tension
213 - Formation of soil is the result of:
213 - Formation of soil is the result of:
Bio-chemical processes
214 - Formula used for the calculation of sodium absorption ratio is______________________?
214 - Formula used for the calculation of sodium absorption ratio is______________________?
SAR=Na / [(Ca+Mg)1/2] Na x 2
215 - Fraction of organic matter comparatively resistant to microbial degradation is:
215 - Fraction of organic matter comparatively resistant to microbial degradation is:
Lignin
216 - From the point of view of crop production, Soil testing refers to______________?
216 - From the point of view of crop production, Soil testing refers to______________?
Both A & C
217 - Fungal population is comparatively high in a soil having:
217 - Fungal population is comparatively high in a soil having:
Acidic pH
218 - General Soil Productivity Index (GSPI) can be calculated by:
218 - General Soil Productivity Index (GSPI) can be calculated by:
Sum of PRI's of major crops/Number of crops
219 - Geochemical weathering processes occurs______________________?
219 - Geochemical weathering processes occurs______________________?
Below soil solum
220 - Gold is___________________?
220 - Gold is___________________?
Native element
221 - Granite and Basalt are examples of:___________?
221 - Granite and Basalt are examples of:___________?
None of the above
222 - Gravimetric water is present in__________________?
222 - Gravimetric water is present in__________________?
Macrospores
223 - Gravimetric water is present in______________________?
223 - Gravimetric water is present in______________________?
Macro pores
224 - Gravitational potential in soil water is potential created due to:
224 - Gravitational potential in soil water is potential created due to:
Gravity
225 - Ground water refers to the________?
225 - Ground water refers to the________?
Aquifer location
226 - Group of legume plant that develops nodules when exposed to bacteria nodules obtained from the nodules of any member of that plant group is known as:
226 - Group of legume plant that develops nodules when exposed to bacteria nodules obtained from the nodules of any member of that plant group is known as:
Cross inoculation group
227 - Gypsum an amendment applied to alkali soil belongs to ______ type:
227 - Gypsum an amendment applied to alkali soil belongs to ______ type:
Soluble Ca-salt
228 - Gypsum is also called as:
228 - Gypsum is also called as:
Salenite
229 - Gypsum requirement of the soil can be determined by 344-N(A-B) in which N is equal to:
229 - Gypsum requirement of the soil can be determined by 344-N(A-B) in which N is equal to:
Normality at EDTP
230 - Heterotrophic organisms obtain energy from the biological oxidation of:
230 - Heterotrophic organisms obtain energy from the biological oxidation of:
Organic carbon
231 - Highly available form of phosphorus at pH 7.5 is:
231 - Highly available form of phosphorus at pH 7.5 is:
HPO4
232 - Hilly soils are low in lime and:
232 - Hilly soils are low in lime and:
Acidic
233 - Histols are found in______________________?
233 - Histols are found in______________________?
Both b & c
234 - Horizontal layers in the soil profile are known as:
234 - Horizontal layers in the soil profile are known as:
Horizontal zones
235 - How many different minerals deposits are found in Pakistan ?
235 - How many different minerals deposits are found in Pakistan ?
60
236 - How many orders are included in the 7th Approximation system of soil classification?
236 - How many orders are included in the 7th Approximation system of soil classification?
10
237 - How much percentage of soils of Pakistan are deficient in P______________________?
237 - How much percentage of soils of Pakistan are deficient in P______________________?
80-90
238 - Humic acid is soluble in____________________?
238 - Humic acid is soluble in____________________?
Alkali
239 - Humic acid is soluble in______________________?
239 - Humic acid is soluble in______________________?
Alkali
240 - Humus colloids are composed basically of:
240 - Humus colloids are composed basically of:
Carbon
241 - Humus enhances the mineral breakdown and increases the availability of some:
241 - Humus enhances the mineral breakdown and increases the availability of some:
Cations
242 - Humus generally refers to the decomposed organic residues which have undergone a series of degradation and synthesis cycles. The humic substances consist of a series of highly acidic, yellow to black coloured, high molecular weight compounds _____________
242 - Humus generally refers to the decomposed organic residues which have undergone a series of degradation and synthesis cycles. The humic substances consist of a series of highly acidic, yellow to black coloured, high molecular weight compounds _____________
both A & B
243 - Hydraulic conductivity of soils varies directly with:
243 - Hydraulic conductivity of soils varies directly with:
Total porosity
244 - Hydrogen requirement of plants in met by:
244 - Hydrogen requirement of plants in met by:
Break-down of water within the plant
245 - hydrosphere refers to______________________?
245 - hydrosphere refers to______________________?
Zone of water
246 - Hygroscopic moisture is held at:
246 - Hygroscopic moisture is held at:
31 atm.
247 - Identify the fertilizer (s) containing potassium____________________?
247 - Identify the fertilizer (s) containing potassium____________________?
All the above
248 - Identify which of the following is a passive soil forming fctors:
248 - Identify which of the following is a passive soil forming fctors:
Relief
249 - If a manure pile is exposed to the rain, what nutrient will be lost the most ?
249 - If a manure pile is exposed to the rain, what nutrient will be lost the most ?
N
250 - If a soil has a bulk density of 1.50 mg/m3 and a particle density of 2.65 ms/m3 then the percentage pore spice of the soil will be:
250 - If a soil has a bulk density of 1.50 mg/m3 and a particle density of 2.65 ms/m3 then the percentage pore spice of the soil will be:
43.4
251 - If crop residues have more than 2% nitrogen, then:
251 - If crop residues have more than 2% nitrogen, then:
Net mineralization will take place
252 - If soyabean is being grown for the first time in a field, the seed should be treated with ______ culture:
252 - If soyabean is being grown for the first time in a field, the seed should be treated with ______ culture:
Rhizobium
253 - If the C: N ratio of crop residues is 20-30 then:
253 - If the C: N ratio of crop residues is 20-30 then:
Both immobilization and mineralization take place
254 - If the C:N ratio of crop residues is less than 20 then:
254 - If the C:N ratio of crop residues is less than 20 then:
Mineralization will take place
255 - If the chlorophyll content in plant increases, the solar radiation transmitted:
255 - If the chlorophyll content in plant increases, the solar radiation transmitted:
Decreases
256 - If the nitrogen content in crop residues is less than 2% nitrogen, then:
256 - If the nitrogen content in crop residues is less than 2% nitrogen, then:
Net immobilization may take place
257 - If the particle size is 2mm to 7.5 cm then it is known as:
257 - If the particle size is 2mm to 7.5 cm then it is known as:
Gravels
258 - Igneous rock whose crystal is 1 cm called____________________?
258 - Igneous rock whose crystal is 1 cm called____________________?
Pegmatitic
259 - Igneous rocks are formed by:
259 - Igneous rocks are formed by:
Cooling of molten magma
260 - Illuviation refers to:
260 - Illuviation refers to:
Accumulation of clay and sesquioxide in lower horizons
261 - In a waterlogged soil the concentration of ______ is high:
261 - In a waterlogged soil the concentration of ______ is high:
Methane
262 - In acid soil rock phosphate should be applied:
262 - In acid soil rock phosphate should be applied:
30 days before sowing
263 - In acid soils, availability of Fe is:
263 - In acid soils, availability of Fe is:
High
264 - In acid soils, phosphorous is fixed as:
264 - In acid soils, phosphorous is fixed as:
Iron and Aluminum phosphate
265 - In CAN, nitrogen is present in following forms:
265 - In CAN, nitrogen is present in following forms:
Both of the above
266 - In case of ammonia synthesis the reaction is:
266 - In case of ammonia synthesis the reaction is:
Exothermic
267 - In chemical weathering the composition of minerals:
267 - In chemical weathering the composition of minerals:
Changed
268 - In cotton, zn deficiency is known as_________?
268 - In cotton, zn deficiency is known as_________?
Little leaf
269 - In degraded add soils root extension into anaerobic and highly reduced layer is reduced due to injurious concentration of:
269 - In degraded add soils root extension into anaerobic and highly reduced layer is reduced due to injurious concentration of:
Iron
270 - In 'Detailed Soil Survey' the base maps used having scale:
270 - In 'Detailed Soil Survey' the base maps used having scale:
1"- 1 mile
271 - In flood rice, snail feed on bacteria called__________________?
271 - In flood rice, snail feed on bacteria called__________________?
Azolla
272 - In general, waters with conductivity values below ______ mmhos/cm are satisfactory for irrigation in so far as salt content in concerned:
272 - In general, waters with conductivity values below ______ mmhos/cm are satisfactory for irrigation in so far as salt content in concerned:
750
273 - In high P-fixing soils, water soluble P2O5-fertilizers are applied to the crops essentially as:
273 - In high P-fixing soils, water soluble P2O5-fertilizers are applied to the crops essentially as:
Placement below the seed
274 - In no-tillage systems, the surface soil layers have:
274 - In no-tillage systems, the surface soil layers have:
Higher bulk density
275 - In order to asses the immediately fertility level of a given soil for K, which one of the following forms of K present in soil would one test for?
275 - In order to asses the immediately fertility level of a given soil for K, which one of the following forms of K present in soil would one test for?
K held in the silt
276 - In Pakistan there is general deficiency of rainfall. It varies from 125 mm annually in upper Sindh to about 900 mm in the sub-mountainous of northern Pakistan. In Balochistan the mean annual rainfall is about 200 mm, diminishing to ________ mm in the dese
276 - In Pakistan there is general deficiency of rainfall. It varies from 125 mm annually in upper Sindh to about 900 mm in the sub-mountainous of northern Pakistan. In Balochistan the mean annual rainfall is about 200 mm, diminishing to ________ mm in the dese
<50 mm
277 - In Pakistan, Indus plains are formed from ___________ parent material which was transported by Indus river and its tributaries from Himalayas?
277 - In Pakistan, Indus plains are formed from ___________ parent material which was transported by Indus river and its tributaries from Himalayas?
None of the above
278 - In Pakistan, Nitrophos is manufactured in_________?
278 - In Pakistan, Nitrophos is manufactured in_________?
Multan
279 - In Pakistan, the major phosphatic fertilizers are:
279 - In Pakistan, the major phosphatic fertilizers are:
All of Above
280 - In respect of a sugarcane crop to be grown in an acidic soil having high P-fixing capacity by the fertilizer of choice would be:
280 - In respect of a sugarcane crop to be grown in an acidic soil having high P-fixing capacity by the fertilizer of choice would be:
Finely ground rock phosphate
281 - In soil where the negative charge is pH dependent, liming Increase CEC which results in an increase potassium by the soil colloids and ______ in soil:
281 - In soil where the negative charge is pH dependent, liming Increase CEC which results in an increase potassium by the soil colloids and ______ in soil:
Decreases
282 - In the C:N ration of crop residues is more than 30, then:
282 - In the C:N ration of crop residues is more than 30, then:
Immobilization will take place
283 - In the diffusion, the movement of ions takes place:
283 - In the diffusion, the movement of ions takes place:
From the region of higher concentration to the lower concentration
284 - In the P-determination by Olsen method, the ration of soil and extractant should be:
284 - In the P-determination by Olsen method, the ration of soil and extractant should be:
1;20
285 - Integrated Nutrient Management (INM) is a well-accepted approach for the sustainable management of________?
285 - Integrated Nutrient Management (INM) is a well-accepted approach for the sustainable management of________?
both a and B
286 - International atomic weight of potassium is_________________?
286 - International atomic weight of potassium is_________________?
39
287 - Iron helps in chlorophyll synthesis because:
287 - Iron helps in chlorophyll synthesis because:
It is associated with chlorophyll
288 - Irrigation with sodic water increase the availability of:
288 - Irrigation with sodic water increase the availability of:
Sodium
289 - Is called father of pedology:
289 - Is called father of pedology:
V.V. Dokuchaev
290 - Is potassium takes parts in metabolic activity?
290 - Is potassium takes parts in metabolic activity?
Yes
291 - K in igneous rocks is about:
291 - K in igneous rocks is about:
0.031
292 - K2 (Si5 Al2)Al4O2 (OH)4 is the formula of:
292 - K2 (Si5 Al2)Al4O2 (OH)4 is the formula of:
Muscovite
293 - Kaolinite can be identified by______________________?
293 - Kaolinite can be identified by______________________?
X-ray diffraction
294 - Kaolinite is a ______ type clay mineral:
294 - Kaolinite is a ______ type clay mineral:
1;1
295 - Kharia disease of rice is diagnosed by:
295 - Kharia disease of rice is diagnosed by:
Dark reddish brown pigmentation
296 - Land capability classes have:
296 - Land capability classes have:
8 categories
297 - Large pieces of erupted magma are called_____________________?
297 - Large pieces of erupted magma are called_____________________?
Volcanic block
298 - Ligands that occur in Pakistan soils are__________________?
298 - Ligands that occur in Pakistan soils are__________________?
All the above
299 - Lignin like compounds in humus is about:
299 - Lignin like compounds in humus is about:
0.45
300 - Lime is used for reclamation of:
300 - Lime is used for reclamation of:
Acidic soil
301 - Limonite is formed by the process of:
301 - Limonite is formed by the process of:
Carbonation
302 - Lithosphere contains about _______ sand stone and 0.25% limestone:
302 - Lithosphere contains about _______ sand stone and 0.25% limestone:
0.0075
303 - Lithosphere contains about:
303 - Lithosphere contains about:
0.04
304 - Lithosphere has about ______ igneous rocks:
304 - Lithosphere has about ______ igneous rocks:
0.95
305 - Lithosphere refers to____________________?
305 - Lithosphere refers to____________________?
Zone of earth crust
306 - Loss of nitrogen in the form of NH3 in alkaline medium is known as_________?
306 - Loss of nitrogen in the form of NH3 in alkaline medium is known as_________?
Volatilization
307 - Losses of soil water not includes_________?
307 - Losses of soil water not includes_________?
Hydroponics loss
308 - Main product of photosynthesis is_____________________?
308 - Main product of photosynthesis is_____________________?
C6H12O6
309 - Mass flow of gases into the soil occurs due to the difference of:
309 - Mass flow of gases into the soil occurs due to the difference of:
Pressure gradient
310 - Material deposited by the wind is called____________________?
310 - Material deposited by the wind is called____________________?
Eolian
311 - Maximum absorption of water by roots takes place through the :
311 - Maximum absorption of water by roots takes place through the :
Root hair
312 - Maximum population of microorganisms found in soils is of:
312 - Maximum population of microorganisms found in soils is of:
Bacteria
313 - Mean annual precipitation for tundra region is ____________________?
313 - Mean annual precipitation for tundra region is ____________________?
0-50 cm
314 - Mechanisms of material uptake by plants is by____________________?
314 - Mechanisms of material uptake by plants is by____________________?
Mass flow
315 - Metamorphic rocks are formed from____________________?
315 - Metamorphic rocks are formed from____________________?
Both a & b
316 - Mg and S are termed as:
316 - Mg and S are termed as:
Secondary nutrients
317 - Mica is:
317 - Mica is:
2:1 type clay mineral, non expandable
318 - Micas have isomorphous substitution:____________?
318 - Micas have isomorphous substitution:____________?
Predominantly in octahedral layer
319 - Microbial population of a soil in general
319 - Microbial population of a soil in general
Decreases with depth
320 - Microorganisms have C/N ratio of____________________?
320 - Microorganisms have C/N ratio of____________________?
0.16736111111
321 - Mineral soil contain organic carbon___________________?
321 - Mineral soil contain organic carbon___________________?
<20%
322 - Mineralization of N refers to the conversion of :
322 - Mineralization of N refers to the conversion of :
Organic form into inorganic form
323 - Moisture content from lower upper plastic limit is known as:
323 - Moisture content from lower upper plastic limit is known as:
Plastic number
324 - Mollic refers to____________________?
324 - Mollic refers to____________________?
Surface horizon
325 - Molybdenum is a component of:
325 - Molybdenum is a component of:
Nitrogenase enzyme
326 - Montmorillinite, illite and kaolinite are:
326 - Montmorillinite, illite and kaolinite are:
Clay minerals
327 - Montmorillonite is following type of clay mineral:
327 - Montmorillonite is following type of clay mineral:
None of these
328 - More than 2.3 value of nutrient index indicates:
328 - More than 2.3 value of nutrient index indicates:
Adequate fertility of soil
329 - Most abundant mineral in the earth crust is______________________?
329 - Most abundant mineral in the earth crust is______________________?
Feldspar
330 - Most abundant organic compound in nature?
330 - Most abundant organic compound in nature?
Cellulose
331 - Most common rocks, after exposed to weathering which cover about ______% 0f the earth:
331 - Most common rocks, after exposed to weathering which cover about ______% 0f the earth:
Sedimentary rocks
332 - Most of the productive soils in Pakistan have pH______________________?
332 - Most of the productive soils in Pakistan have pH______________________?
Between 7.5 to 8.5
333 - Most resistant mineral present in soil is:
333 - Most resistant mineral present in soil is:
Quartz
334 - Most widely spread mineral in the world is________________?
334 - Most widely spread mineral in the world is________________?
Kaolinite
335 - Muratt of potash contains:
335 - Muratt of potash contains:
None of the above
336 - Mycorrhiza-infected plants show better ability of absorption of the nutreients, especially:
336 - Mycorrhiza-infected plants show better ability of absorption of the nutreients, especially:
Phosphorus
337 - Mycorrihiza-infected plants show better growth than uninfected plants, especially on:
337 - Mycorrihiza-infected plants show better growth than uninfected plants, especially on:
Low fertility soils
338 - N, P, K percent in cotton seed cake is:
338 - N, P, K percent in cotton seed cake is:
4, 1.9, 1.7
339 - Na Ai Si2O8 is the formula of:
339 - Na Ai Si2O8 is the formula of:
Albite
340 - Na and k can be determined by the use of____________________?
340 - Na and k can be determined by the use of____________________?
Flame photometer
341 - Na2CO3 salts is___________________?
341 - Na2CO3 salts is___________________?
Alkaline
342 - Nitrate levels in drinking water above about ______ mg per litre are considered a human health hazard:
342 - Nitrate levels in drinking water above about ______ mg per litre are considered a human health hazard:
10
343 - Nitrification is the microbial conversion of____________________?
343 - Nitrification is the microbial conversion of____________________?
NH nitrogen the NO3 nitrogen in soil
344 - Nitrogen gases are involved in_____________________?
344 - Nitrogen gases are involved in_____________________?
Acid rains
345 - Non-symbiotic bacteria fixes _______ amount of N2 than symbiotic N2 fixers:
345 - Non-symbiotic bacteria fixes _______ amount of N2 than symbiotic N2 fixers:
Less
346 - Number of master horizons is:
346 - Number of master horizons is:
5
347 - Nutrient absorbed by plants are carried upward through the:
347 - Nutrient absorbed by plants are carried upward through the:
Xylem
348 - Nutrient index is used to prepare the:
348 - Nutrient index is used to prepare the:
Soil fertility map
349 - Occurrence of quartz, in high amounts makes a rock:
349 - Occurrence of quartz, in high amounts makes a rock:
Acidic
350 - Olsen method of P determination is more effective in:
350 - Olsen method of P determination is more effective in:
Alkaline ail
351 - On the basis of pH measurements, the nearly neutral soils have pH value between:
351 - On the basis of pH measurements, the nearly neutral soils have pH value between:
6.6 to 7.5
352 - On the basis of total mass, the relative abundance of the given elements in the earth's crust is such that:
352 - On the basis of total mass, the relative abundance of the given elements in the earth's crust is such that:
Si > O2 > Fe = Al
353 - Organic (O) horizon is absent in_________?
353 - Organic (O) horizon is absent in_________?
Arable soils
354 - Organic carbon content in the soil is a measure of:
354 - Organic carbon content in the soil is a measure of:
Available nitrogen
355 - Organic matter contains about ______ percent organic carbon:
355 - Organic matter contains about ______ percent organic carbon:
58
356 - Organic matter content of 'histosols' and ""hydromorphic"soils is:
356 - Organic matter content of 'histosols' and ""hydromorphic"soils is:
60-70%
357 - Organic matter in Pakistani soils is generally:_________?
357 - Organic matter in Pakistani soils is generally:_________?
less than 1 %
358 - Organic matter influences:_________?
358 - Organic matter influences:_________?
All of the above
359 - Organic P content in soil, by ignition method is estimated by igniting the soil at ____________________?
359 - Organic P content in soil, by ignition method is estimated by igniting the soil at ____________________?
1000ºC
360 - Organic soil are called____________________?
360 - Organic soil are called____________________?
Both a & b
361 - Organism used as biofertilizer in wheat cultivation:
361 - Organism used as biofertilizer in wheat cultivation:
Azotobacter
362 - Organisms satisfying their carbon requirement as Co2 from atmosphere and energy requirement from oxidation of simple inorganic compound are called as_________?
362 - Organisms satisfying their carbon requirement as Co2 from atmosphere and energy requirement from oxidation of simple inorganic compound are called as_________?
Chemoautotroph
363 - Oxidation of sulfure to sulphate is carried out by:
363 - Oxidation of sulfure to sulphate is carried out by:
Thiobacillus spp
364 - Oxygen and Silicon together comprise approximately ______ %of the earth crust?
364 - Oxygen and Silicon together comprise approximately ______ %of the earth crust?
0.75
365 - Oxygen requirement of the plant is met by absorbing:
365 - Oxygen requirement of the plant is met by absorbing:
Respiration
366 - Part of soil which is in contact with root surface is called___________________?
366 - Part of soil which is in contact with root surface is called___________________?
Rhizoshpere
367 - Particular matter consists of____________________?
367 - Particular matter consists of____________________?
Solid and liquid
368 - Peat soils are ______ in nature:
368 - Peat soils are ______ in nature:
50-55%
369 - Peat soils are not present in Pakistan because these are formed in___________?
369 - Peat soils are not present in Pakistan because these are formed in___________?
both A & B
370 - Peat soils have _____ organic matter:
370 - Peat soils have _____ organic matter:
10-40%
371 - Pedogenic processes bring about changes in the parent materials in the form of _____________________, within the soil body (soil profile)?
371 - Pedogenic processes bring about changes in the parent materials in the form of _____________________, within the soil body (soil profile)?
both A and B
372 - Pedology is the study of:
372 - Pedology is the study of:
Soils
373 - Percent nitrogen is equal to:
373 - Percent nitrogen is equal to:
Percent organic matter x 0.05
374 - Percent of total N present in soil is in the form of organic N:
374 - Percent of total N present in soil is in the form of organic N:
95.99
375 - Percentage of N in Ammonium ritract fertilizer is___________________?
375 - Percentage of N in Ammonium ritract fertilizer is___________________?
33
376 - Percentage of N in Ammonium sulphate fertilizer is___________________?
376 - Percentage of N in Ammonium sulphate fertilizer is___________________?
21
377 - Percentage of soil solids in soil is:
377 - Percentage of soil solids in soil is:
0.5
378 - Perfect hardness of any mineral is determined by___________________?
378 - Perfect hardness of any mineral is determined by___________________?
Mho€™s scale
379 - Permanent change in soil is due to__________________?
379 - Permanent change in soil is due to__________________?
Isomorphic substitution
380 - Permanente wilting point of clayey soils is not less than____________________?
380 - Permanente wilting point of clayey soils is not less than____________________?
0.1
381 - pF unit is used for the measurement of_____________________?
381 - pF unit is used for the measurement of_____________________?
Negative soil water potential
382 - pH in coniferous forest is__________________?
382 - pH in coniferous forest is__________________?
Less than 7
383 - pH of Pakistani soils is____________________?
383 - pH of Pakistani soils is____________________?
7.5
384 - pH value of 7.0 denotes that the soil reaction is:
384 - pH value of 7.0 denotes that the soil reaction is:
Neutral
385 - Phosphates enzyme play a major role in ______ of organic phosphates in soil:
385 - Phosphates enzyme play a major role in ______ of organic phosphates in soil:
Mineralization
386 - Phosphorous occurs in soil in:
386 - Phosphorous occurs in soil in:
Both (a) & (b)
387 - Phosphorus fixation refers to the phenomenon of:
387 - Phosphorus fixation refers to the phenomenon of:
Conversion of soluble phosphorus into plant unavailable forms
388 - Phosphorus is esential for:
388 - Phosphorus is esential for:
Both of these
389 - Physical condition of soil for plant growth is called___________________?
389 - Physical condition of soil for plant growth is called___________________?
Tilth
390 - Physical weathering causes:
390 - Physical weathering causes:
Disintegration of rocks and minerals
391 - Places where volcanoes occur are_________________?
391 - Places where volcanoes occur are_________________?
All the above
392 - Planets in our system are____________________?
392 - Planets in our system are____________________?
9
393 - Plants meet their oxygen requirement by:
393 - Plants meet their oxygen requirement by:
All the above methods
394 - Plutonic rocks are also called____________________?
394 - Plutonic rocks are also called____________________?
Intrusive igneous
395 - Pneumatic potential is due to____________________?
395 - Pneumatic potential is due to____________________?
Gas
396 - Point of zero change means____________________?
396 - Point of zero change means____________________?
Zero charge at surface
397 - Poor quality water contains:
397 - Poor quality water contains:
Higher amount of soluble salts
398 - Potassium (K) fixation capacity is maximum in:____________?
398 - Potassium (K) fixation capacity is maximum in:____________?
Vermiculite
399 - Potassium (K) occurs as a constituent of the earth€™s crust in the proportion of_________?
399 - Potassium (K) occurs as a constituent of the earth€™s crust in the proportion of_________?
0.023
400 - Potassium fixation is higher in:
400 - Potassium fixation is higher in:
1:1 type clays
401 - Potassium is considered vital in:
401 - Potassium is considered vital in:
All of the above
402 - Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?
402 - Previously Essential nutrients required for the growth of plants were sixteen. In recent time the essential nutrients required for the growth of plants are:_________?
18
403 - Primary air pollution is____________________?
403 - Primary air pollution is____________________?
SO2
404 - Problem of erosion in Thal and Cholistan is due to____________________?
404 - Problem of erosion in Thal and Cholistan is due to____________________?
Wind
405 - Process of immobilization refers to:
405 - Process of immobilization refers to:
Conversion of inorganic form to organic form
406 - Process of mixing of soils is known as_________?
406 - Process of mixing of soils is known as_________?
The correct option is not present above
407 - Process of mixing soil by fauna and flora is called__________________?
407 - Process of mixing soil by fauna and flora is called__________________?
Pedoturbation
408 - Product of microorganism that appears to chelate calcium is called_____________________?
408 - Product of microorganism that appears to chelate calcium is called_____________________?
2-ketoghconic acid
409 - Q = KA (P1-P1)/n1 denotes the:
409 - Q = KA (P1-P1)/n1 denotes the:
Darcy's equation of gas flow
410 - Q = Ki is the ______ equation:
410 - Q = Ki is the ______ equation:
Darcy's equation
411 - Quantity of single super phosphate needed for applying 80 kg P2O5/ha to sugarcane will be:
411 - Quantity of single super phosphate needed for applying 80 kg P2O5/ha to sugarcane will be:
500 kg
412 - Radiation can be detected by the blankening of photographic film or by using___________________?
412 - Radiation can be detected by the blankening of photographic film or by using___________________?
GM counter
413 - Radioactive tracer technique is used for determining:
413 - Radioactive tracer technique is used for determining:
Translocation of minerals in plants
414 - Rate of entry of water in soil is__________?
414 - Rate of entry of water in soil is__________?
Infiltration
415 - Refers to the study of the origin of soils in there natural environment, its classification and description:
415 - Refers to the study of the origin of soils in there natural environment, its classification and description:
Pedology
416 - Refers to the study of the soil properties in relation to crop production:
416 - Refers to the study of the soil properties in relation to crop production:
Edaphology
417 - Refers to the upper most biochemical weathered portion of the regolith:
417 - Refers to the upper most biochemical weathered portion of the regolith:
Soil
418 - Release of nutrients like nitrogen, phosphorus and sulphur from the added organic matter by M.O. at the initial stage of degradation will depend upon:
418 - Release of nutrients like nitrogen, phosphorus and sulphur from the added organic matter by M.O. at the initial stage of degradation will depend upon:
Chemical composition of added organic matter
419 - Rhizobia infect the host legumes through:
419 - Rhizobia infect the host legumes through:
Root bairs
420 - Rhizobium after infection converts to a form, which is irregular in shape and is called:
420 - Rhizobium after infection converts to a form, which is irregular in shape and is called:
Bacteriod
421 - Rhizobium japonicum can fix the nitrogen in the roots of:
421 - Rhizobium japonicum can fix the nitrogen in the roots of:
Soyabean
422 - Rhizobium leguminoserum can fix the nitrogen in the roots of:
422 - Rhizobium leguminoserum can fix the nitrogen in the roots of:
Pea, Sweetpea, lentil
423 - Rhizobium phaseoli can fix the nitrogen in the roots of:
423 - Rhizobium phaseoli can fix the nitrogen in the roots of:
Bean
424 - Rhizobium sp fix atmospheric nitrogen:
424 - Rhizobium sp fix atmospheric nitrogen:
As symbiouts on pulses
425 - Rhizobium trifolii can fix the nitrogen in the roots of:
425 - Rhizobium trifolii can fix the nitrogen in the roots of:
Clover
426 - Rhizohium culture is used to increase biological nitrogen fixation in:
426 - Rhizohium culture is used to increase biological nitrogen fixation in:
Pulse crops
427 - Rhizoplane is________?
427 - Rhizoplane is________?
Root surface
428 - Rhizosphere is:
428 - Rhizosphere is:
An area of soil in immediate vicinity around root
429 - Rhizosphere refers to the small area:
429 - Rhizosphere refers to the small area:
Around the root
430 - Rhizospheres affect microbial population and nutrient availability by:
430 - Rhizospheres affect microbial population and nutrient availability by:
Secreting nutritive metabolites and organic solvents
431 - Rhyolite in nature is______________________?
431 - Rhyolite in nature is______________________?
Acidic
432 - Rock phosphate can be directly applied as fertilizer in soils:
432 - Rock phosphate can be directly applied as fertilizer in soils:
Acidic
433 - Rock phosphate contains:
433 - Rock phosphate contains:
10 to 40% P2O5
434 - Rocks and weathered materials transported by ___________ ,act as initial materials for soil formation?
434 - Rocks and weathered materials transported by ___________ ,act as initial materials for soil formation?
All of the above
435 - Rocks formed from compacted clay or mud are called____________________?
435 - Rocks formed from compacted clay or mud are called____________________?
Shale
436 - Rocks formed from molten magma are called__________________?
436 - Rocks formed from molten magma are called__________________?
Igneous rocks
437 - Rocks having coarse bubble holes are called_______________________?
437 - Rocks having coarse bubble holes are called_______________________?
Scoria
438 - Rocks which are formed by disintegration of pre-existing rocks by weathering are____________________?
438 - Rocks which are formed by disintegration of pre-existing rocks by weathering are____________________?
Classics
439 - Roots usually occupy :__________?
439 - Roots usually occupy :__________?
1% or less of soil volume
440 - S.M.P. buffer is used in determination of:
440 - S.M.P. buffer is used in determination of:
Lime
441 - Saline soils are reclaimed/managed by:
441 - Saline soils are reclaimed/managed by:
Leaching the soluble salts
442 - Saline-sodic soils have the value of:
442 - Saline-sodic soils have the value of:
EC less than 4mmhos/cm, ESP more than 15, pH more than 8.5
443 - Salt-tolerant plants are called ____________________?
443 - Salt-tolerant plants are called ____________________?
Halophytes
444 - Sand stone and limit stone are the examples of:
444 - Sand stone and limit stone are the examples of:
Sedimentary rock
445 - Schist is example of____________________?
445 - Schist is example of____________________?
Metamorphic rock
446 - Secondary air pollution is _____________________?
446 - Secondary air pollution is _____________________?
All the above
447 - Sedimentary rocks are formed by:
447 - Sedimentary rocks are formed by:
Cementation of broken parts
448 - Select the water soluble phosphatic fertilizer from the following__________?
448 - Select the water soluble phosphatic fertilizer from the following__________?
All of these
449 - Sewage water consists of water and solids in the following percentage___________________?
449 - Sewage water consists of water and solids in the following percentage___________________?
99 & 1
450 - Shrinking and swelling is property of__________________?
450 - Shrinking and swelling is property of__________________?
Smecitie
451 - Si4 AI4 O10 (OH)8 is a formula of:
451 - Si4 AI4 O10 (OH)8 is a formula of:
Muscovite
452 - Si4 O10 (OH)8 n.H2O is a formula of:is a formula of:
452 - Si4 O10 (OH)8 n.H2O is a formula of:is a formula of:
Halloysite
453 - Silica content of an igneous rock is:
453 - Silica content of an igneous rock is:
40-50%
454 - Silica has particle size range between:
454 - Silica has particle size range between:
0.02 to 0.002 mm
455 - Silt stones consists of grains whose size range from____________________?
455 - Silt stones consists of grains whose size range from____________________?
Both b & c
456 - Single super phosphate (SSP) contains:
456 - Single super phosphate (SSP) contains:
16 to 18% P2O5
457 - Single super phosphate (SSP) is manufactured from:
457 - Single super phosphate (SSP) is manufactured from:
Rock phosphate
458 - Single super phosphate is preferred for phosphorus application in groundnut because it also provides:
458 - Single super phosphate is preferred for phosphorus application in groundnut because it also provides:
Sulphur and calcium both
459 - Size of clay particle is___________________?
459 - Size of clay particle is___________________?
0.02mm
460 - Slipperiness is due to__________________?
460 - Slipperiness is due to__________________?
Vander walls forces
461 - Slow nitrification rate of non-edible mahua cake is due to:
461 - Slow nitrification rate of non-edible mahua cake is due to:
The presence of oil
462 - Smectite groups include:
462 - Smectite groups include:
Saponite
463 - Sodic soils contain sufficient amount of ______ to interfere with plant growth:
463 - Sodic soils contain sufficient amount of ______ to interfere with plant growth:
Exchangeable sodium
464 - Sodium nitrate contains:
464 - Sodium nitrate contains:
16% nitrogen
465 - Soil air contains:
465 - Soil air contains:
0.25% CO2
466 - Soil colour determination is standardized and determined by the comparison of the soil colour to:
466 - Soil colour determination is standardized and determined by the comparison of the soil colour to:
Munsell chart
467 - Soil formed under impeded drainage conditions, where movement of air and water is restructed is known as:
467 - Soil formed under impeded drainage conditions, where movement of air and water is restructed is known as:
Gley soil
468 - Soil is biochemically weathered part of:
468 - Soil is biochemically weathered part of:
Regolith
469 - Soil moisture and ET losses are_________________?
469 - Soil moisture and ET losses are_________________?
Directly related
470 - Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is_________?
470 - Soil order characterized by excess of weathering with dominant iron and aluminium oxide clays, common in tropics is_________?
Oxisols
471 - Soil Organic Matter (SOM) serves not only as a reservoir of all the required plant nutrients, but it:
471 - Soil Organic Matter (SOM) serves not only as a reservoir of all the required plant nutrients, but it:
All of these
472 - Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:
472 - Soil Organic Matter (SOM) which consists of about _______ % organic carbon plays a vital role by providing macro & micro nutrients:
0.58
473 - Soil organic matter has many remarkable effects and one of them is given below, identify the same:
473 - Soil organic matter has many remarkable effects and one of them is given below, identify the same:
Encouraged granulation
474 - Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?
474 - Soil particles as individuals such as sand and do not form aggregates. These are usually found in parent material or C horizon is:_________?
Single-grained
475 - Soil particles having diameter greater than 2 mm are called___________________?
475 - Soil particles having diameter greater than 2 mm are called___________________?
Gravel
476 - Soil samples are collected to:
476 - Soil samples are collected to:
Plastic bags
477 - Soil samples are collected:
477 - Soil samples are collected:
None of these
478 - Soil strength for engineering purposes is determinated by the characteristics:
478 - Soil strength for engineering purposes is determinated by the characteristics:
All of these
479 - Soil structural units having horizontal axis much longer than vertical axis. Such type of soil structure is known as:
479 - Soil structural units having horizontal axis much longer than vertical axis. Such type of soil structure is known as:
Platy
480 - Soil structure without aggregation is known as____________________?
480 - Soil structure without aggregation is known as____________________?
Massive
481 - Soil survey's are of different type:
481 - Soil survey's are of different type:
Three type
482 - Soil water can be determined by_____________________?
482 - Soil water can be determined by_____________________?
Both a & b
483 - Soils are acidic for one of the reason:
483 - Soils are acidic for one of the reason:
Acidic parent material
484 - Soils are surveyed and classified on the basis of distinctive feature of:
484 - Soils are surveyed and classified on the basis of distinctive feature of:
Soil profiles
485 - Soils containing high proportion of organic matter have following colour:
485 - Soils containing high proportion of organic matter have following colour:
Dark colour
486 - Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?
486 - Soils that have more than 20% organic matter are termed as organic soils. These are also called:________?
Both a and c
487 - Soils that have more than 20% organic matter are termed as:__________?
487 - Soils that have more than 20% organic matter are termed as:__________?
All of these
488 - Soils with high pH are generally dificient in:
488 - Soils with high pH are generally dificient in:
Zn and Mn
489 - Soluble salt content of soil determined by measuring its:
489 - Soluble salt content of soil determined by measuring its:
Electrical consuctivity
490 - Solum is made up of:
490 - Solum is made up of:
None of these
491 - Solution containing molecular weight of a substance in gram per liter of a solution is known as______________________?
491 - Solution containing molecular weight of a substance in gram per liter of a solution is known as______________________?
Molar
492 - Some pesticides with positively charged groups are also absorbed by:
492 - Some pesticides with positively charged groups are also absorbed by:
Silicate clays
493 - Some times, AB/EB/BA/BE horizons in soil profile are present which are called__________?
493 - Some times, AB/EB/BA/BE horizons in soil profile are present which are called__________?
Transition horizons
494 - Source of negative charges on silicate clays is/ are________?
494 - Source of negative charges on silicate clays is/ are________?
All of these
495 - Specific heat is higher in:
495 - Specific heat is higher in:
Humus
496 - Specific heat of organic matter is______?
496 - Specific heat of organic matter is______?
0.44
497 - Specific heat of the dry soil is equal to:
497 - Specific heat of the dry soil is equal to:
0.5 cal/gm
498 - Specific heat of the mineral matter is:
498 - Specific heat of the mineral matter is:
0.18 Cal gm-1
499 - Standard way of collecting a soil sample is to take:
499 - Standard way of collecting a soil sample is to take:
Several samples from all over the field and mix
500 - Steamed bone-meal contains:
500 - Steamed bone-meal contains:
22% P2O5
501 - Structure and size of aphantic rock is________________?
501 - Structure and size of aphantic rock is________________?
Fine grained
502 - Sugar cane is_____________________?
502 - Sugar cane is_____________________?
C4 plant
503 - Sulphate of potash is preferable to MoP for tobacco because:
503 - Sulphate of potash is preferable to MoP for tobacco because:
The chlorine in the MoP effect the burning quality of tobacco
504 - Sulphur is an essential component of:__________?
504 - Sulphur is an essential component of:__________?
All of these
505 - Super-digested compost is called so because:
505 - Super-digested compost is called so because:
Super-phosphate is added to the compost during its preparation
506 - swelling clay soils, develop cracks due to greater proportion of swelling type clays:
506 - swelling clay soils, develop cracks due to greater proportion of swelling type clays:
Vertisols
507 - Symbiotic association of fungal hyphae with plant roots is known as:
507 - Symbiotic association of fungal hyphae with plant roots is known as:
Mycorrhiza
508 - Systematic examination of soil in the field and laboratories, their description and grouping according to classification system:
508 - Systematic examination of soil in the field and laboratories, their description and grouping according to classification system:
The answer of statement is not in options
509 - Tarai soils are generally deficient in:
509 - Tarai soils are generally deficient in:
Zinc
510 - Tarai soils are high in:
510 - Tarai soils are high in:
Organic matter
511 - Temperature has got significant effects on:
511 - Temperature has got significant effects on:
All of above
512 - The acidic igneous rocks contain silica:
512 - The acidic igneous rocks contain silica:
>65%
513 - The acidity of H+ absorbed on solid phase is known as:
513 - The acidity of H+ absorbed on solid phase is known as:
Reserve acidity
514 - The acidity of H+ in aqueous phase of soils is called:
514 - The acidity of H+ in aqueous phase of soils is called:
Active acidity
515 - The addition of excess soluble phosphate fertilizers to soils may affect plant growth by:
515 - The addition of excess soluble phosphate fertilizers to soils may affect plant growth by:
Reducing the availability of Ca
516 - The adverse effect of poor quality water is/will be more on:
516 - The adverse effect of poor quality water is/will be more on:
Clay soil
517 - The aggregation of individual particles is called___________________?
517 - The aggregation of individual particles is called___________________?
Flocculation
518 - The albedo of the earth is:__________?
518 - The albedo of the earth is:__________?
0.3
519 - The alkali soil can be identified by seeing:
519 - The alkali soil can be identified by seeing:
Black colour on the surface
520 - The amount of P in soil and soil solution that can exchange with orthophosphate in addition to soil as measured by plant growth in soil system is termed as:
520 - The amount of P in soil and soil solution that can exchange with orthophosphate in addition to soil as measured by plant growth in soil system is termed as:
L-value
521 - The amount of work dong by the water during its movement from Initial point to reference point is known as:
521 - The amount of work dong by the water during its movement from Initial point to reference point is known as:
Soil water potential
522 - The appropriate method to apply phosphatic fertilizers is__________?
522 - The appropriate method to apply phosphatic fertilizers is__________?
Basal placement
523 - The atmospheric layer lies closest to the earth surface is known as___________________?
523 - The atmospheric layer lies closest to the earth surface is known as___________________?
Troposphere
524 - The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:
524 - The availability of essential nutrients from soil to the plants is controlled by the ________ properties of soil:
chemical
525 - The availability of phosphoreus is maximums at soil pH:
525 - The availability of phosphoreus is maximums at soil pH:
5.5-7.5
526 - The available form of calcium to plant is________________?
526 - The available form of calcium to plant is________________?
Ca(free cation
527 - The available form of sulphur for plant is___________________?
527 - The available form of sulphur for plant is___________________?
SO-2
528 - The available from of nitrogen for plant is________________?
528 - The available from of nitrogen for plant is________________?
Both a & b
529 - The available water present in soil for better plant growth in between:
529 - The available water present in soil for better plant growth in between:
Field capacity and wilting percentage
530 - The average arable surface soil may be considered to have a particle density of about:
530 - The average arable surface soil may be considered to have a particle density of about:
2.66 gms/cc
531 - The average chemical composition of NPK of night soil is:
531 - The average chemical composition of NPK of night soil is:
5.5 - 4.0 - 2.0
532 - The average soil bulk density of cultivated loamy soil is approximately:
532 - The average soil bulk density of cultivated loamy soil is approximately:
1.1 - 1.4 gm cm-3
533 - The bacteria considered most important to bring about the conversion of NH4 to NH2:
533 - The bacteria considered most important to bring about the conversion of NH4 to NH2:
Both (a) & (b)
534 - The bacteria responsible for fixation of nitrogen in soyabean are:
534 - The bacteria responsible for fixation of nitrogen in soyabean are:
Rhyzobium japonicum
535 - The best estimate of the available P in phosphatic fertilizers is obtained from the:
535 - The best estimate of the available P in phosphatic fertilizers is obtained from the:
Water soluble fraction
536 - The biological method for determining defidency of lime, P and K is:
536 - The biological method for determining defidency of lime, P and K is:
Azotobacter plaque test
537 - The C.E.C. of illite is about:
537 - The C.E.C. of illite is about:
40 m.e./100 g
538 - The C.E.C. of mica is about:
538 - The C.E.C. of mica is about:
10 m.e./100 g
539 - The C:N ratio in the organic matter of the furrow slice (upper 15 cm) of arable soils commonly ranges from?
539 - The C:N ratio in the organic matter of the furrow slice (upper 15 cm) of arable soils commonly ranges from?
8:1 to 15:1
540 - The capacity of soils to be moulded, that is to change shape in response to stress and peep that shape when stress is removed is termed as:
540 - The capacity of soils to be moulded, that is to change shape in response to stress and peep that shape when stress is removed is termed as:
Plasticity
541 - The carbon nitrogen ratio in cultivated soil is stabilized as:
541 - The carbon nitrogen ratio in cultivated soil is stabilized as:
8:1 to 15:1
542 - The cation, which competes with ammonium during fixation, is:
542 - The cation, which competes with ammonium during fixation, is:
Potassium
543 - The CEC of kaolinite clay varies between:
543 - The CEC of kaolinite clay varies between:
3 and 15
544 - The cellulose content in humus is about:
544 - The cellulose content in humus is about:
0.04
545 - The characteristics of surface soil, which have important, bearing in soil management and crop production, is known as:
545 - The characteristics of surface soil, which have important, bearing in soil management and crop production, is known as:
Soil phase
546 - The chemical formula for Ammonium acctatc is_____________________?
546 - The chemical formula for Ammonium acctatc is_____________________?
NH4OAC
547 - The chemical formula of Dolomite is________________?
547 - The chemical formula of Dolomite is________________?
CaMg (CO3)2
548 - The chemical formula of Hematite is_____________________?
548 - The chemical formula of Hematite is_____________________?
Fe2O3
549 - The chemical formula of urea fertilizer is_______________________?
549 - The chemical formula of urea fertilizer is_______________________?
Both a & b
550 - The choice of a chemical amendment may be influenced by the _______ required for reaction in the soil:
550 - The choice of a chemical amendment may be influenced by the _______ required for reaction in the soil:
Time
551 - The colloidal surface area in the upper 15 cm of a hectare of a clay soil could be as high as km.
551 - The colloidal surface area in the upper 15 cm of a hectare of a clay soil could be as high as km.
700000
552 - The complex fertilizer Nitrophos available in the market contains_____________________?
552 - The complex fertilizer Nitrophos available in the market contains_____________________?
23%N & 23% P2O3
553 - The concentration of CO2 in the soil increases after the rains, probably because of:
553 - The concentration of CO2 in the soil increases after the rains, probably because of:
Increase nitrification and decomposition of organic matter
554 - The concept of soil as a natural body was first developed by:
554 - The concept of soil as a natural body was first developed by:
V.V.Dakuchaev
555 - The conditions responsible for the formation of salt affected soil is:
555 - The conditions responsible for the formation of salt affected soil is:
Low rainfall and high evaporation
556 - The conductivity of a saturation extract is greater 4 dsm-1 an exchangeable sodium percentage (ESP) of less than 15 and the pH is usually less than 8.5 is called as__________________?
556 - The conductivity of a saturation extract is greater 4 dsm-1 an exchangeable sodium percentage (ESP) of less than 15 and the pH is usually less than 8.5 is called as__________________?
Saline soils
557 - The configuration of a surface and the relations among its man-made and natural features is called:________?
557 - The configuration of a surface and the relations among its man-made and natural features is called:________?
Topography
558 - The conversion of amount into nitrate by microorganisms is known as:
558 - The conversion of amount into nitrate by microorganisms is known as:
Nitrification
559 - The credit for identifying the essentality of K, Ca, Mg and P to planta goes to________?
559 - The credit for identifying the essentality of K, Ca, Mg and P to planta goes to________?
Sprengel
560 - The credit for identifying the essentality of nitrogen to plants goes to________?
560 - The credit for identifying the essentality of nitrogen to plants goes to________?
Theodore-saussure
561 - The crop suitable for cultivation in saline sodic soil would include:
561 - The crop suitable for cultivation in saline sodic soil would include:
Soyabean and rice
562 - The C-spacing of halloysite is:
562 - The C-spacing of halloysite is:
10.2 A
563 - The cuticular membrances are generally more permeable to:
563 - The cuticular membrances are generally more permeable to:
Cations rather than anions
564 - The dark coloured soils are:
564 - The dark coloured soils are:
High in Fe and Mn
565 - The deficient level of N (%) in plants suggested by various workers is____________________?
565 - The deficient level of N (%) in plants suggested by various workers is____________________?
0.03
566 - The device used for the measurement of positive pressure potential of soil water is known as_________________?
566 - The device used for the measurement of positive pressure potential of soil water is known as_________________?
Piezometer
567 - The diagnostic surface horizons are called:
567 - The diagnostic surface horizons are called:
Epipedon
568 - The diagnostic techniques used in evaluating soil nutrient status and determining fertilizer requirements of the crop include:
568 - The diagnostic techniques used in evaluating soil nutrient status and determining fertilizer requirements of the crop include:
All of the above
569 - The diameter of most erodible soils particle is:
569 - The diameter of most erodible soils particle is:
0.2 mm
570 - The diameter of water molecule is approximately:
570 - The diameter of water molecule is approximately:
2.64A
571 - The direct exchange of ions between the roots and clay colloids called:
571 - The direct exchange of ions between the roots and clay colloids called:
Contact exchange theory
572 - The discovery of oxygen was done by ________, which proved the keystone of other discoveries that went far toward unlocking the mystery of plant life:
572 - The discovery of oxygen was done by ________, which proved the keystone of other discoveries that went far toward unlocking the mystery of plant life:
Priestly
573 - The dominant colour of spectral (rainbow) in soil indicates:
573 - The dominant colour of spectral (rainbow) in soil indicates:
Hue
574 - The earth core is made of the following metals ______________________?
574 - The earth core is made of the following metals ______________________?
Fe & Ni
575 - The earth mainly consists of:
575 - The earth mainly consists of:
Three spheres
576 - The earth's element crust is a part of:
576 - The earth's element crust is a part of:
Lithosphere
577 - The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?
577 - The EC: SAR and RSC values suggested by WAPDA for 3rd class irrigation water(C,S,R,) are____________________?
ECi:<1.5, SAR < 10 & RSC< 2.5
578 - The elements play direct role in formation of chlorophyll is:
578 - The elements play direct role in formation of chlorophyll is:
Nitrogen and Magnesium
579 - The exact chemical formula of DAP fertilizer is___________________?
579 - The exact chemical formula of DAP fertilizer is___________________?
(NH2) HPO4
580 - The exact formula for calculating the base saturation percentage is_____________________?
580 - The exact formula for calculating the base saturation percentage is_____________________?
Bas saturation percentage = CA+Mg+Na / CEC x 100
581 - The exact formula for sodium hexametaphosphate is___________________?
581 - The exact formula for sodium hexametaphosphate is___________________?
[(NaPO3)13]
582 - The example of amide group nitrogenous fertilizer:
582 - The example of amide group nitrogenous fertilizer:
Urea
583 - The factor responsible for the formation of acid soil:
583 - The factor responsible for the formation of acid soil:
High rainfall
584 - The factor used for conversion of P to P2O3 is____________________?
584 - The factor used for conversion of P to P2O3 is____________________?
0.436
585 - The fertilizers which have two or more than two major plant nutrient in their chemical composition are called:
585 - The fertilizers which have two or more than two major plant nutrient in their chemical composition are called:
Complex fertilizer
586 - The first mechanism to start in the wind erosion is_________?
586 - The first mechanism to start in the wind erosion is_________?
None of these
587 - The first passage through which nutrients enters into the leaves:
587 - The first passage through which nutrients enters into the leaves:
Intercuticular passage
588 - The foliated metamorphic rocks are formed due to:
588 - The foliated metamorphic rocks are formed due to:
Pressure-metamorphism
589 - The following factors other than gypsum solution may effect the extraction of calcium and suplhate from a gypsiferous soil:
589 - The following factors other than gypsum solution may effect the extraction of calcium and suplhate from a gypsiferous soil:
Sulphte solution from a source other than gypsum
590 - The formula used for calculating RSC is _____________________?
590 - The formula used for calculating RSC is _____________________?
RSC=(CO32 + HCO2) ( Ca2 + Mg2)
591 - The gaseous exchange between soil and atmosphere is the:
591 - The gaseous exchange between soil and atmosphere is the:
Natural process
592 - The global average of solar radiation reaching the earth is:
592 - The global average of solar radiation reaching the earth is:
0.5
593 - The H2 fixation by Rhizohium species in legume is called :
593 - The H2 fixation by Rhizohium species in legume is called :
Symbiotic N2 fixation
594 - The harmful effect of saline soil is due to:
594 - The harmful effect of saline soil is due to:
High osmotic pressure of soil solution
595 - The highest nitrogen content among the commonly used nitrogenous fertilizers is embodied by:
595 - The highest nitrogen content among the commonly used nitrogenous fertilizers is embodied by:
Urea
596 - The horizons O, A, E and B (other than r and C) are collectively called_____________?
596 - The horizons O, A, E and B (other than r and C) are collectively called_____________?
Solum
597 - The horizons, which make up the profile of a forest soil would include:
597 - The horizons, which make up the profile of a forest soil would include:
A, C and O
598 - The illuviation zone of soil is:
598 - The illuviation zone of soil is:
Accumulation
599 - The important function of nitrogen is:
599 - The important function of nitrogen is:
To increase growth and green colour in plants
600 - The indicator used for estimation of the soil available boron is_______?
600 - The indicator used for estimation of the soil available boron is_______?
Azomethine-H
601 - The indicator used for the the estimation of the organic matter or organic carbon is;_________?
601 - The indicator used for the the estimation of the organic matter or organic carbon is;_________?
Diphenylamine indicator
602 - The inherent capacity of a soil to supply nutrients to plants in available and balanced proportion can be represented by:
602 - The inherent capacity of a soil to supply nutrients to plants in available and balanced proportion can be represented by:
Soil fertility
603 - The inner shell of earth consists of_____________________?
603 - The inner shell of earth consists of_____________________?
Silicate of Fe & Mg
604 - The instrument used for measuring the photosynthetically active radiations (PAR) is:________?
604 - The instrument used for measuring the photosynthetically active radiations (PAR) is:________?
Quantom sensor
605 - The internal & external surfaces of soil colloids are positively and or negatively charged. Mostly ____________ is dominant:
605 - The internal & external surfaces of soil colloids are positively and or negatively charged. Mostly ____________ is dominant:
Negative
606 - The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?
606 - The kaolininte is a layer silicate clay mineral, it is 1:1 type of mineral with___________________?
3-15 meq/100g CEC
607 - The kind, rate and intensity and pedogenic processes are controlled by ________ ,soil-forming factors?
607 - The kind, rate and intensity and pedogenic processes are controlled by ________ ,soil-forming factors?
None of the above
608 - The largest soil order in Pakistan?
608 - The largest soil order in Pakistan?
Aridisols
609 - The light coloured soils are:
609 - The light coloured soils are:
Low in fe and Mn
610 - The lithosphere is mainly made up of:
610 - The lithosphere is mainly made up of:
Igneous rocks
611 - The little clay mineral is_____________________?
611 - The little clay mineral is_____________________?
None or little expending
612 - The losses of ammonia usually become greater with ______ soil:
612 - The losses of ammonia usually become greater with ______ soil:
Increase in soil pH
613 - The lower limit of available water is called ____________________?
613 - The lower limit of available water is called ____________________?
Wilting point
614 - The main characteristics, which render the alkali soils unfavourable for crop growth is:
614 - The main characteristics, which render the alkali soils unfavourable for crop growth is:
Poor physical conditions
615 - The main source of heat energy for soil is:
615 - The main source of heat energy for soil is:
Solar radiations
616 - The major nutrients are:
616 - The major nutrients are:
N, P, K
617 - The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies
617 - The major soil fertility problems in Pakistani soils deficiencies of N, P and Zn. Deficiencies K, Fe, and B also occur in specific crop genotypes or soil types, while deficiencies of S, Cu, and Mn are negligible. however, the common nutrient deficiencies
both A & B
618 - The manifestation of the physical forces of cohesion and adhesion acting within the soil at various moisture contents is called:
618 - The manifestation of the physical forces of cohesion and adhesion acting within the soil at various moisture contents is called:
Soil consistency
619 - The marble is a__________?
619 - The marble is a__________?
Dynamo metamorphic
620 - The mass per unit volume of the solid mass of the soil excluding pore space is known as:
620 - The mass per unit volume of the solid mass of the soil excluding pore space is known as:
True density
621 - The maximum moisture is available to plants at:
621 - The maximum moisture is available to plants at:
Field capacity
622 - The maximum phosphorus availability in most of the soils in the pH range:
622 - The maximum phosphorus availability in most of the soils in the pH range:
6.0 - 6.5
623 - The maximum size limit of clay fraction is considered to be:
623 - The maximum size limit of clay fraction is considered to be:
0.0002 mm
624 - The method of survey adopted for intensive cultivation is:
624 - The method of survey adopted for intensive cultivation is:
Detailed survey
625 - The microbes, which can survive at the temperature 25 - 30 Degree C is termed as:
625 - The microbes, which can survive at the temperature 25 - 30 Degree C is termed as:
Mesophylic
626 - The mineral gypsum has chemical composition:
626 - The mineral gypsum has chemical composition:
CaSO4.2H2O
627 - The mineral limonite has chemical composition:
627 - The mineral limonite has chemical composition:
None of above
628 - The mineralization of organic phosphorus has been studied in relation to:
628 - The mineralization of organic phosphorus has been studied in relation to:
C/N/P
629 - The moisture content below which a cohesive soil does stick to metal tools is known as______________________?
629 - The moisture content below which a cohesive soil does stick to metal tools is known as______________________?
Sticky limit
630 - The molar mass of NaCl is_____________________?
630 - The molar mass of NaCl is_____________________?
58.58
631 - The molecular transfer of gases due to concentration of partial pressure gardient in the soil is termed as:
631 - The molecular transfer of gases due to concentration of partial pressure gardient in the soil is termed as:
Diffustion
632 - The most abundant metal in the earth€™s crust and toxic to plants in low concentration is____________________?
632 - The most abundant metal in the earth€™s crust and toxic to plants in low concentration is____________________?
Al
633 - The most abundant mineral present in the earth's crust is:
633 - The most abundant mineral present in the earth's crust is:
Felspar
634 - The most important silicte clays are known as:
634 - The most important silicte clays are known as:
Phyllosilicates
635 - The N2 fertilizer of choice for tea is:
635 - The N2 fertilizer of choice for tea is:
(NH4)2SO4
636 - The N2 fixation by Azotobacter and Acospirillum in the cereals is called:
636 - The N2 fixation by Azotobacter and Acospirillum in the cereals is called:
Non-symbiotic N2 fixation
637 - The N2 fixation in pea may be upto _______ kg N2/ha/year:
637 - The N2 fixation in pea may be upto _______ kg N2/ha/year:
80 - 150
638 - The N2 fixation in soyabean may be upto ______ kg N2/ha/year:
638 - The N2 fixation in soyabean may be upto ______ kg N2/ha/year:
65 - 115
639 - The N2 fixation in the roots of Alfalfa _______ kg N2/ha/year:
639 - The N2 fixation in the roots of Alfalfa _______ kg N2/ha/year:
125 - 300
640 - The natural soil aggregates are called as:
640 - The natural soil aggregates are called as:
Peds
641 - The negative logarithm of H+ ion concentration (activity) in the soil-solution:
641 - The negative logarithm of H+ ion concentration (activity) in the soil-solution:
pH
642 - The net reaction of photosynthesis is_____________________?
642 - The net reaction of photosynthesis is_____________________?
CO2 + H2O light O2 + (CH3O)
643 - The Neubauer seedling method is used to evaluate the soil fertility. The test plants used in this method is:
643 - The Neubauer seedling method is used to evaluate the soil fertility. The test plants used in this method is:
Rye or Oat seedling
644 - The new comprehensive soils classification is based on:
644 - The new comprehensive soils classification is based on:
Physical and chemical properties of soils
645 - The number of essential elements required for the growth of higher plant is:
645 - The number of essential elements required for the growth of higher plant is:
16
646 - The number of functional plant nutrient is:
646 - The number of functional plant nutrient is:
20
647 - The nutrient element silicon (Si) is:_________?
647 - The nutrient element silicon (Si) is:_________?
Beneficial
648 - The nutrient particularly influencing root growth is___________________?
648 - The nutrient particularly influencing root growth is___________________?
Phosphorus
649 - The oblique type of soil structure has about:
649 - The oblique type of soil structure has about:
25 - 30% pore space
650 - The organic matter of soils is ordinarily obtained by multiplying the organic carbon content by:
650 - The organic matter of soils is ordinarily obtained by multiplying the organic carbon content by:
1.72
651 - The organism, which can survive at the temperature 10 - 15 Degree C, is called:
651 - The organism, which can survive at the temperature 10 - 15 Degree C, is called:
Psychrophylic
652 - The P2O5 content is P in the plough layer of 1 ha of soil containing 0.1%. P2O5 is:
652 - The P2O5 content is P in the plough layer of 1 ha of soil containing 0.1%. P2O5 is:
1500 kg
653 - The particlesw density of a mineral soil is about____________________?
653 - The particlesw density of a mineral soil is about____________________?
2650 Kg m-3
654 - The pattern of occurrence of various soil taxonomic units on the detailed map is called:
654 - The pattern of occurrence of various soil taxonomic units on the detailed map is called:
Soil complex
655 - The percentage of calcium content in single superphosphate?
655 - The percentage of calcium content in single superphosphate?
0.195
656 - The percentage of soil water held with water potential - 15 bars is called as:
656 - The percentage of soil water held with water potential - 15 bars is called as:
Wilting point
657 - The pH of a solution, containing 1 x 10-7 gm ion/ml. will be:
657 - The pH of a solution, containing 1 x 10-7 gm ion/ml. will be:
7
658 - The planned development, distribution and use water resources:
658 - The planned development, distribution and use water resources:
Water management
659 - The plant in which CO2 fixation is solely via the Calvin cycle is_____________________?
659 - The plant in which CO2 fixation is solely via the Calvin cycle is_____________________?
CAB
660 - The plant nutrient when supplied in excess prolongs the growing period and delay crop maturity is:
660 - The plant nutrient when supplied in excess prolongs the growing period and delay crop maturity is:
Nitrogen
661 - The porosity will be more in soils having particle size of:
661 - The porosity will be more in soils having particle size of:
0.002 mm
662 - The positive and high value of redox potential indictes:
662 - The positive and high value of redox potential indictes:
Strong oxidizing conditions
663 - The presence of autotrophic mycorrhiza enhances the uptake of nutrients in general, but particularly of:
663 - The presence of autotrophic mycorrhiza enhances the uptake of nutrients in general, but particularly of:
Phosphrous
664 - The prime objective of conservation tillage is:
664 - The prime objective of conservation tillage is:
Partial retention of plant residues
665 - The principal cation that affects the availability/fixation of phosphorus in alkali soils is:
665 - The principal cation that affects the availability/fixation of phosphorus in alkali soils is:
Fe and Al
666 - The problem of soil crosion Thal and Cholistan is predominantly due to___________________?
666 - The problem of soil crosion Thal and Cholistan is predominantly due to___________________?
Wind
667 - The process by which nutrients chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil:
667 - The process by which nutrients chemicals or contaminants are dissolved and carried away by water, or are moved into a lower layer of soil:
Leaching
668 - The process of accumulation of excess quantity of nutrients in water causing O2 deficiency is known as_____________________?
668 - The process of accumulation of excess quantity of nutrients in water causing O2 deficiency is known as_____________________?
Eutrophication
669 - The process of ammonification is often ______ by the use of pesticides:
669 - The process of ammonification is often ______ by the use of pesticides:
Benefited
670 - The process of deposition of soil materials in the lower layer is termed as:_________?
670 - The process of deposition of soil materials in the lower layer is termed as:_________?
Illuviation
671 - The process of transformation of raw organic matter into humus:
671 - The process of transformation of raw organic matter into humus:
Humification
672 - The process responsible for the formation of sodic soil is:
672 - The process responsible for the formation of sodic soil is:
Alkalinization
673 - The quantity of solid phase phosphorus that acts as reserve is often referred to as:
673 - The quantity of solid phase phosphorus that acts as reserve is often referred to as:
Quality factor
674 - The quantity of urea needed for applying 115 kg nitrogen to maize will be (approx):
674 - The quantity of urea needed for applying 115 kg nitrogen to maize will be (approx):
150 kg
675 - The ratio of thermal conductivity and heat capacity is known as:
675 - The ratio of thermal conductivity and heat capacity is known as:
Thermal diffusivity
676 - The reaction of Na2 CO3 salt is____________________?
676 - The reaction of Na2 CO3 salt is____________________?
Alkaline
677 - The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth€™s crust is_________?
677 - The relative abundance of three types of rocks ( igneous-metamorphic- sedimentary) in the earth€™s crust is_________?
64.7 % - 27.4 % - 7.9 %
678 - The relative amounts of air and water in the pore spaces:
678 - The relative amounts of air and water in the pore spaces:
Fluctuate continuously
679 - The relative proportions of sand silt and clay n the soil is known as:
679 - The relative proportions of sand silt and clay n the soil is known as:
Soil texture
680 - The removal of excess water from the ground surface is called:________?
680 - The removal of excess water from the ground surface is called:________?
Surface operations
681 - The representtion of surface feature on map and their identification is called:
681 - The representtion of surface feature on map and their identification is called:
Soil legand
682 - The residual effect of ammonical nitrogenous fertilizer in soil is:
682 - The residual effect of ammonical nitrogenous fertilizer in soil is:
Acidic
683 - The resistance of a soil at various moisture contents to mechanical stresses or manipulations:
683 - The resistance of a soil at various moisture contents to mechanical stresses or manipulations:
Soil consistence
684 - The rice crop tolerates submergence because:
684 - The rice crop tolerates submergence because:
The plant has mechanism to transport O2 through leaves
685 - The rock ""Granite"is a:
685 - The rock ""Granite"is a:
Igneous rock
686 - The rock 'Quartzite' is a:
686 - The rock 'Quartzite' is a:
Metamorphic rock
687 - The rock, which is formed by sedimentation of primary rock, is called:
687 - The rock, which is formed by sedimentation of primary rock, is called:
Sedimentary rock
688 - The rock, which is formed under high temperature and pressure and by sudden geological tectonic movement, is called:
688 - The rock, which is formed under high temperature and pressure and by sudden geological tectonic movement, is called:
Metamorphic rock
689 - The safe limit of No2 in drinking water is_____________________?
689 - The safe limit of No2 in drinking water is_____________________?
10 mg L-1
690 - The saline soil can be managed by:
690 - The saline soil can be managed by:
Leaching of salts
691 - The salinity can be reduced by the application of___________________?
691 - The salinity can be reduced by the application of___________________?
Lime
692 - The science of growing terrestrial plants in an aerated solution is known as___________________?
692 - The science of growing terrestrial plants in an aerated solution is known as___________________?
Hydroponics
693 - The seventieth element included in the list of essential nutrient element is:__________?
693 - The seventieth element included in the list of essential nutrient element is:__________?
Nickle
694 - The site of grains present in sands structuring range__________________?
694 - The site of grains present in sands structuring range__________________?
0.0625 mm dia
695 - The sodicity of water can be expressed by:
695 - The sodicity of water can be expressed by:
SAR
696 - The soil layer of maximum leaching is indicated by the symbol
696 - The soil layer of maximum leaching is indicated by the symbol
A1
697 - The soil of Sindh (Pakistan) have pH______________________?
697 - The soil of Sindh (Pakistan) have pH______________________?
7.5 to 8.5
698 - The soil samples are dried at _______________, for gravimetric soil analysis?
698 - The soil samples are dried at _______________, for gravimetric soil analysis?
105 0C
699 - The soil solum includes:
699 - The soil solum includes:
A and B Horizon
700 - The soil temperature under field conditions can be altered by suitable cultural practice such as:
700 - The soil temperature under field conditions can be altered by suitable cultural practice such as:
All of the above
701 - The soils most prone to structural crusts are those which are higher in_________?
701 - The soils most prone to structural crusts are those which are higher in_________?
Both A & B
702 - The soils of ______ zones can supply adequate potassium for many years even under irrigations:
702 - The soils of ______ zones can supply adequate potassium for many years even under irrigations:
Arid
703 - The species of Rhizobium present in the root nodules of soyabean is:
703 - The species of Rhizobium present in the root nodules of soyabean is:
R. japonicum
704 - The succulence and lodging in plants is due to 'excessive' application of:
704 - The succulence and lodging in plants is due to 'excessive' application of:
Hydrogen
705 - The sufficiency limit of iron is normally between:
705 - The sufficiency limit of iron is normally between:
50-150 ppm
706 - The symbol of Na stands for___________________?
706 - The symbol of Na stands for___________________?
None of these
707 - The systematic examination, description, classification and mapping of soil of an area is known as:
707 - The systematic examination, description, classification and mapping of soil of an area is known as:
Soil survey
708 - The technique used for minimizing the loss of nitrogen in paddy fields comprises:
708 - The technique used for minimizing the loss of nitrogen in paddy fields comprises:
All of these
709 - The tendency of the young upper leaves to remain as the lower leaves yellow or die is an indication of nitrogen:
709 - The tendency of the young upper leaves to remain as the lower leaves yellow or die is an indication of nitrogen:
Mobility
710 - The tension of the water at the upper plastic limit is equivalent to pF value:
710 - The tension of the water at the upper plastic limit is equivalent to pF value:
0.5
711 - The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?
711 - The term applied to a material which tends to absorb moisture from the atmosphere is called__________________?
Hydroscopic
712 - The term rhizosphere was coined by:___________?
712 - The term rhizosphere was coined by:___________?
Hiltner
713 - The texture of surface soil or surface horizon is called:
713 - The texture of surface soil or surface horizon is called:
Soil type
714 - The time for which water and ion remains in vicinity is called_____________________?
714 - The time for which water and ion remains in vicinity is called_____________________?
Residence time
715 - The toxicity level of Zn (mg/kg) in plants suggested by some workers is___________________?
715 - The toxicity level of Zn (mg/kg) in plants suggested by some workers is___________________?
> 400 mg kg-1
716 - The tree sends down roots from its branches to the soil is know as:_______?
716 - The tree sends down roots from its branches to the soil is know as:_______?
Banyan
717 - The Tree sends down roots from its branches to the soil is known as:___________?
717 - The Tree sends down roots from its branches to the soil is known as:___________?
Banyan
718 - The tropical soils high in hydrous oxides of iron and aluminium embody ______ to torrential rains:
718 - The tropical soils high in hydrous oxides of iron and aluminium embody ______ to torrential rains:
Resistance
719 - The unconsolidated material on the underlying rock is called:
719 - The unconsolidated material on the underlying rock is called:
Regolith
720 - The unique soil environment under the influence of plants roots is called rhizosphere and this term was given by__________?
720 - The unique soil environment under the influence of plants roots is called rhizosphere and this term was given by__________?
Hiltner
721 - The unit of electrical conductivity is____________________?
721 - The unit of electrical conductivity is____________________?
dsm-1
722 - The unit of fertilizer or any other growth factor which is necessary to produce the yield which in 50% of maximum possible yield is called:
722 - The unit of fertilizer or any other growth factor which is necessary to produce the yield which in 50% of maximum possible yield is called:
Baule unit
723 - The value above ______ ppm is associated with boron toxicity:
723 - The value above ______ ppm is associated with boron toxicity:
250
724 - The very high temperatures required for ICP-AES are attained by__________?
724 - The very high temperatures required for ICP-AES are attained by__________?
Plasma
725 - The virus infecting bacteria is called:_________?
725 - The virus infecting bacteria is called:_________?
Bacteriophage
726 - The water diffusivity has the units of:__________?
726 - The water diffusivity has the units of:__________?
cm2/s
727 - The water held with a water potential greater than. 1/3 bar is known as:
727 - The water held with a water potential greater than. 1/3 bar is known as:
Gravitational water
728 - The water loss through transpiration from vegetative and evaporation from soil surface is known as__________________?
728 - The water loss through transpiration from vegetative and evaporation from soil surface is known as__________________?
Evaptranspiration
729 - The wearing away of the land surface by wind, water, ice or other geological agents is called____________________?
729 - The wearing away of the land surface by wind, water, ice or other geological agents is called____________________?
Soil erosion
730 - The weathered material transported by means of waters and deposited in river basins are termed as:
730 - The weathered material transported by means of waters and deposited in river basins are termed as:
Alluvial
731 - The weathering causes:
731 - The weathering causes:
Disintegration and decomposition of rocks and minerals
732 - The zinc deficiency in rice causes disease:
732 - The zinc deficiency in rice causes disease:
Khaira
733 - The zorawar is brand name of ___________________?
733 - The zorawar is brand name of ___________________?
MAP
734 - There are twelve soil orders found in the world of which six soil orders have been recognized at various locations are________?
734 - There are twelve soil orders found in the world of which six soil orders have been recognized at various locations are________?
Entisols, Inceptisols, Aridisols, Alfisols, Mollisols, Vertisols
735 - There is a net increase in the mineralization of organaic nitrogen in soil when:
735 - There is a net increase in the mineralization of organaic nitrogen in soil when:
C:N = < 20:1
736 - Thermal conductivity of different textural classes of the soils follows the following order:
736 - Thermal conductivity of different textural classes of the soils follows the following order:
Sand > Loam > Clay > Peat
737 - Thick concordant bodies which force the overlying sediments to form dome-shaped hills are called_____________________?
737 - Thick concordant bodies which force the overlying sediments to form dome-shaped hills are called_____________________?
Laccoliths
738 - Thickness of Dikes ranges from___________________?
738 - Thickness of Dikes ranges from___________________?
2-10 m
739 - Til cake contains about:
739 - Til cake contains about:
6.0% N
740 - To check nitrification, nitrification inhibitors are most useful in:
740 - To check nitrification, nitrification inhibitors are most useful in:
Peady
741 - To prevent denitrification losses of nitrogen in paddy field, nitrogen should be applied in the:
741 - To prevent denitrification losses of nitrogen in paddy field, nitrogen should be applied in the:
Reduced zone
742 - Tolerance to soil salinity of the given set of crops is such that:
742 - Tolerance to soil salinity of the given set of crops is such that:
Barley > wheat > beans > upland paddy
743 - Total salt affected soils of Pakistan are____________________?
743 - Total salt affected soils of Pakistan are____________________?
6.3 m ha
744 - Transport of P2O5 from the cytosol (pH about 7) into vacuoles (pH nearly 5.5) involves:
744 - Transport of P2O5 from the cytosol (pH about 7) into vacuoles (pH nearly 5.5) involves:
H2PO4 and HPO4
745 - Tricalcium phosphate is soluble in:
745 - Tricalcium phosphate is soluble in:
Strong mineral acid
746 - TSP contains____________________?
746 - TSP contains____________________?
46%P
747 - Tuff is__________________?
747 - Tuff is__________________?
Volcanic ash
748 - Type of water vapour movement, which occurs in soils, is:
748 - Type of water vapour movement, which occurs in soils, is:
Both of these
749 - Under tropical condition, the volatilization losses of nitrogen is:
749 - Under tropical condition, the volatilization losses of nitrogen is:
20 - 50%
750 - Unit of measuring electrical conductivity is:
750 - Unit of measuring electrical conductivity is:
Millimhos/cm
751 - Upper plastic limit is also known as:
751 - Upper plastic limit is also known as:
Liquid limit
752 - Upward translocation of fluid in xylem takes place due to:
752 - Upward translocation of fluid in xylem takes place due to:
Pull of transpiration stream
753 - Urea contain:
753 - Urea contain:
46.0 nitrogen
754 - Urea in manufactured form gases________________________?
754 - Urea in manufactured form gases________________________?
NH48CO2
755 - Urea is mineralized in the presence of enzyme:
755 - Urea is mineralized in the presence of enzyme:
Urease
756 - Use of materials like S, polyform UF, isobutylidene diurea etc, improves fertilizer use efficiency, when such additions are used, the N-fertilizers are termed as:
756 - Use of materials like S, polyform UF, isobutylidene diurea etc, improves fertilizer use efficiency, when such additions are used, the N-fertilizers are termed as:
Slow nitrifying N-fertilizers
757 - V = 2rg (PP-Pm)/gm is:
757 - V = 2rg (PP-Pm)/gm is:
Stoke's law
758 - Vermiculite is:
758 - Vermiculite is:
2:1 type mineral
759 - Vertical movement of water was studied by_________________?
759 - Vertical movement of water was studied by_________________?
Darcy
760 - Volume of soil under the influence of roots of growing plants is known as:
760 - Volume of soil under the influence of roots of growing plants is known as:
Rhizosphere
761 - Volumetric heat capacity can be calculated by multiplying specific heat with the corresponding:
761 - Volumetric heat capacity can be calculated by multiplying specific heat with the corresponding:
Density
762 - Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:
762 - Walkley and Blacks method of organic matter determination allows recovery of _____% organic carbon content:
0.74
763 - Water drains by gravitational force from pores larger than:
763 - Water drains by gravitational force from pores larger than:
About 30 - 60 microns
764 - Water is the major constituent of all living creatures. Biomass of plants is composed of ________% water:
764 - Water is the major constituent of all living creatures. Biomass of plants is composed of ________% water:
85 - 95%
765 - Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:
765 - Water occupied the larger soil pores and moves down readily under the force of gravity. Water in excess of the field capacity is termed:
Gravitational water
766 - Weathered material transported by means of force of gravity the deposition is termed as:
766 - Weathered material transported by means of force of gravity the deposition is termed as:
Colluvial
767 - Weathering is the natural process of__________?
767 - Weathering is the natural process of__________?
both A & C
768 - Weathering is_______________________?
768 - Weathering is_______________________?
Both a & b
769 - Weathering of gabbros gives_____________________?
769 - Weathering of gabbros gives_____________________?
Clay and iron oxide
770 - Weathering process-physical, chemical, and biological _______________, the rocks and minerals into simpler products which either accumulate in place or are transported to other places where they become soil parent materials?
770 - Weathering process-physical, chemical, and biological _______________, the rocks and minerals into simpler products which either accumulate in place or are transported to other places where they become soil parent materials?
Both a & c
771 - What are diatoms?
771 - What are diatoms?
Soil Algae
772 - What culture should be given priority in groundnut cultivation?
772 - What culture should be given priority in groundnut cultivation?
Rhizobia
773 - What is a soil horizon?
773 - What is a soil horizon?
Layers of soil
774 - What is the concentration of pure water?
774 - What is the concentration of pure water?
55.5 mol/L
775 - What is the effect of application of P2O5 fertilizer to a green manure leguminous crop in the availability of phosphorus to the succeeding crop?
775 - What is the effect of application of P2O5 fertilizer to a green manure leguminous crop in the availability of phosphorus to the succeeding crop?
It does not affect the availability of phosphorous to succeeding crop
776 - What is the effect of application of P2O5 fertilizer to a green manure leguminous crop on the availabiliity of phosphorus to the succeeding crop?
776 - What is the effect of application of P2O5 fertilizer to a green manure leguminous crop on the availabiliity of phosphorus to the succeeding crop?
It does not affect the availability of phosphorous to succeeding crop
777 - What is the formula of urea?
777 - What is the formula of urea?
CO (NH2)2
778 - What is the optimum temperature and pH for nitrifying bacteria ?
778 - What is the optimum temperature and pH for nitrifying bacteria ?
25-40 c, pH 8-8.5
779 - What is the P2O5 content of various rock phosphates?
779 - What is the P2O5 content of various rock phosphates?
20 - 35%
780 - What is the pH of calcareous soils?
780 - What is the pH of calcareous soils?
8.0-8.5
781 - What is Vesicular Arbuscular Mycorrhiza (VAM)?
781 - What is Vesicular Arbuscular Mycorrhiza (VAM)?
Fungi
782 - What kind of nitrogenous (N) fertilizers should not be used for flooded soil:
782 - What kind of nitrogenous (N) fertilizers should not be used for flooded soil:
Both B & C
783 - When a nutrient takes active part in growth and development of plant called:
783 - When a nutrient takes active part in growth and development of plant called:
Essential
784 - When a plant is under soil moisture stress, the roots:
784 - When a plant is under soil moisture stress, the roots:
Shrink in size
785 - When emerging leaves of maize show yellow to white bleached bands in lower parts, it whows the defidency of:
785 - When emerging leaves of maize show yellow to white bleached bands in lower parts, it whows the defidency of:
Zinc
786 - When organic matter with wide C:N (70:1) is added to the soil, the net effect is the disappearance of mineral nitrogen due to:
786 - When organic matter with wide C:N (70:1) is added to the soil, the net effect is the disappearance of mineral nitrogen due to:
N2 transformation
787 - When two or more functional groups of single ligand are coordinated to metal cation the complex is termed as___________________?
787 - When two or more functional groups of single ligand are coordinated to metal cation the complex is termed as___________________?
Chelate
788 - Which bacteria causes fermentation__________________?
788 - Which bacteria causes fermentation__________________?
Pseudomonas
789 - Which bacteria convert nitrite to nitrate___________________?
789 - Which bacteria convert nitrite to nitrate___________________?
Nitrobacter
790 - Which chemical used to prevent evaporation from surface of water in water bodies?
790 - Which chemical used to prevent evaporation from surface of water in water bodies?
Cetyle alcohol
791 - Which compound decay slowly______________________?
791 - Which compound decay slowly______________________?
Lignin
792 - Which compound is mostly used in Pakistan for the reclamation of saline-sodic & sodic soils_________________?
792 - Which compound is mostly used in Pakistan for the reclamation of saline-sodic & sodic soils_________________?
Gypsum
793 - Which element can be fixed by smecitite___________________?
793 - Which element can be fixed by smecitite___________________?
Kº
794 - Which element is found highest in earth crust?
794 - Which element is found highest in earth crust?
None of the above
795 - Which element is known as chemical police man of plant?
795 - Which element is known as chemical police man of plant?
Potassium
796 - Which instrument is used for determining soil texture___________________?
796 - Which instrument is used for determining soil texture___________________?
Hydrometer
797 - Which is passive factor of weathering ?
797 - Which is passive factor of weathering ?
Parent material
798 - Which is/are dominating salt/s in alkali soil:
798 - Which is/are dominating salt/s in alkali soil:
Both a & b
799 - Which leaf of rice is sampled for tissue nutrient analysis?
799 - Which leaf of rice is sampled for tissue nutrient analysis?
None of these
800 - Which mineral contain phosphorus__________________?
800 - Which mineral contain phosphorus__________________?
Apatite
801 - Which mulch reduce soil temperature?
801 - Which mulch reduce soil temperature?
Polythene
802 - Which nitrogenous fertilizer will you recommend for paddy crop?
802 - Which nitrogenous fertilizer will you recommend for paddy crop?
Ammonical nitrate fertilizer
803 - Which nutrient is maximum given for raising the field crops?
803 - Which nutrient is maximum given for raising the field crops?
Nitrogen
804 - Which nutrients are immobile in plants?
804 - Which nutrients are immobile in plants?
Both A & C
805 - Which of the biochemically weathered constitutes soil?
805 - Which of the biochemically weathered constitutes soil?
Upper
806 - Which of the following are not a soil edaphic factor affect the plant growth?
806 - Which of the following are not a soil edaphic factor affect the plant growth?
None of these
807 - Which of the following are secondary minerals:
807 - Which of the following are secondary minerals:
All of the above
808 - Which of the following are the slow release fertilizers?
808 - Which of the following are the slow release fertilizers?
All of the above
809 - Which of the following crop takes N in ammonical form:
809 - Which of the following crop takes N in ammonical form:
Rice
810 - Which of the following element is mobile in soil?
810 - Which of the following element is mobile in soil?
N
811 - Which of the following elements regulate oxidation-reduction reaction in plant?
811 - Which of the following elements regulate oxidation-reduction reaction in plant?
Iron, manganese, molybdenum, copper, boron and zinc
812 - Which of the following fertilizer has maximum plant nutrient?
812 - Which of the following fertilizer has maximum plant nutrient?
D.A.P.
813 - Which of the following fertilizers show maximum residual acidity with the continuous soil application:
813 - Which of the following fertilizers show maximum residual acidity with the continuous soil application:
Ammonium sulphate
814 - Which of the following is a component of nucleic acid and protein:
814 - Which of the following is a component of nucleic acid and protein:
N
815 - Which of the following is an igneous rock?
815 - Which of the following is an igneous rock?
Quartz
816 - Which of the following is considered as bio-fertilizer?
816 - Which of the following is considered as bio-fertilizer?
Blue-green algae
817 - Which of the following is correct explanation of ESP?
817 - Which of the following is correct explanation of ESP?
Exchangeable Na x 100//CEC
818 - Which of the following is harmful to the higher plants?
818 - Which of the following is harmful to the higher plants?
All of these
819 - Which of the following is not a high salt tolerant crop?
819 - Which of the following is not a high salt tolerant crop?
Maize
820 - Which of the following is not a igneous rocks?
820 - Which of the following is not a igneous rocks?
Dibase
821 - Which of the following is not a kind of soil structure?
821 - Which of the following is not a kind of soil structure?
None of these
822 - Which of the following is not a metamorphic rock?
822 - Which of the following is not a metamorphic rock?
Sand stone
823 - Which of the following is not a metamorphic rock?
823 - Which of the following is not a metamorphic rock?
both A & B
824 - Which of the following is not a method of placement of fertilizers?
824 - Which of the following is not a method of placement of fertilizers?
None of these
825 - Which of the following is not a method of soil moisture measurement?
825 - Which of the following is not a method of soil moisture measurement?
Tensiometer
826 - Which of the following is not a primary major nutrient?
826 - Which of the following is not a primary major nutrient?
S
827 - Which of the following is not a secondary major nutrient?
827 - Which of the following is not a secondary major nutrient?
P
828 - Which of the following is not the soil order prevail in Pakistan?
828 - Which of the following is not the soil order prevail in Pakistan?
None of the above
829 - Which of the following is wrong?
829 - Which of the following is wrong?
Sandy soils have higher sand percentage with more water holding capacity
830 - Which of the following is wrong?
830 - Which of the following is wrong?
Nitrogen is converted into nitrate by earthworms
831 - Which of the following methods is most useful to increase the availability of soil applied phosphorus?
831 - Which of the following methods is most useful to increase the availability of soil applied phosphorus?
Placement
832 - Which of the following nutrient elements are regarded as energy exchangers:
832 - Which of the following nutrient elements are regarded as energy exchangers:
Both A & B
833 - Which of the following nutrient elements are regarded as energy exchangers?
833 - Which of the following nutrient elements are regarded as energy exchangers?
Hydrogen and oxygen
834 - Which of the following organism is responsible for decomposition of organic matter?
834 - Which of the following organism is responsible for decomposition of organic matter?
Bacteria
835 - Which of the following organism is responsible for decomposition of organic matter?
835 - Which of the following organism is responsible for decomposition of organic matter?
Quartz
836 - Which of the following rotations is likely to leave soil richer in organic matter:
836 - Which of the following rotations is likely to leave soil richer in organic matter:
Maize-oats-clovers
837 - Which of the following soil texture is lighter than others?
837 - Which of the following soil texture is lighter than others?
Loamy sand
838 - Which of the following soil texture is more heavier than other?
838 - Which of the following soil texture is more heavier than other?
Silty day loam
839 - Which of the following soils has higher buffering capacity?
839 - Which of the following soils has higher buffering capacity?
Clay soils
840 - Which of the following statement is correct?
840 - Which of the following statement is correct?
Blue-green algae fix atmospheric nitrogen in soil
841 - Which of the following statements is more correct as regards to ""luxury consumption"of K found in minute?
841 - Which of the following statements is more correct as regards to ""luxury consumption"of K found in minute?
Maize takes excess K above the optimum requirement even though growth and yield are not promoted
842 - Which of the following to a high salt tolerant crop?
842 - Which of the following to a high salt tolerant crop?
Lucerne
843 - Which one of the following are macro nutrients__________________?
843 - Which one of the following are macro nutrients__________________?
Ca,Mg,S
844 - Which one of the following concentrated organic manures has maximum P2O5 content?
844 - Which one of the following concentrated organic manures has maximum P2O5 content?
Stera meat
845 - Which one of the following fertilizers is least hygroscopic?
845 - Which one of the following fertilizers is least hygroscopic?
CAN
846 - Which one of the following irrigation methods is best suited for an undulating topography?
846 - Which one of the following irrigation methods is best suited for an undulating topography?
Check basin method
847 - Which one of the following is not a component of the moisture potential in soils?
847 - Which one of the following is not a component of the moisture potential in soils?
Turgor potential
848 - Which one of the following is not a soil forming factor?
848 - Which one of the following is not a soil forming factor?
Moisture
849 - Which one of the following is physical property of soil______________________?
849 - Which one of the following is physical property of soil______________________?
None of the above
850 - Which one of the following minerals is least weatherable in soil?
850 - Which one of the following minerals is least weatherable in soil?
Quartz
851 - Which one of the following oil cakes, in addition to its manurial value, acts also as a nitrification inhibitor?
851 - Which one of the following oil cakes, in addition to its manurial value, acts also as a nitrification inhibitor?
Til
852 - Which one of the following organic matter has the narrowest C/N ratio?
852 - Which one of the following organic matter has the narrowest C/N ratio?
Compost
853 - Which one of the following pairs is correct?
853 - Which one of the following pairs is correct?
DAP - 20%
854 - Which one of the following pairs is not correctly matched?
854 - Which one of the following pairs is not correctly matched?
Hight calcium content in soil - Iron chloride
855 - Which one of the following pairs of elements and the mineral from which they are obtained is not correctly matched?
855 - Which one of the following pairs of elements and the mineral from which they are obtained is not correctly matched?
Boron - Siderite
856 - Which one of the following sets of soil condition is more suitable for plant growth?
856 - Which one of the following sets of soil condition is more suitable for plant growth?
Loamy soils with medium aeration and medium water holding capacity
857 - Which one of the following statements is correct?
857 - Which one of the following statements is correct?
Azotobacters fix N2 symbiotically
858 - Which one of the following techniques is used for assessing available P in soil and does not include growing plants:
858 - Which one of the following techniques is used for assessing available P in soil and does not include growing plants:
E-Value
859 - Which rock contain potash feldspar ?
859 - Which rock contain potash feldspar ?
Syeruite
860 - Which rock is harder_________________?
860 - Which rock is harder_________________?
Metamorphic
861 - Which silica mineral is present in soil in abundant quantity____________________?
861 - Which silica mineral is present in soil in abundant quantity____________________?
Quartz
862 - Which soil bolds more water ?
862 - Which soil bolds more water ?
Clayey
863 - Which soil is suitable for nce________________?
863 - Which soil is suitable for nce________________?
Fine textured
864 - Which type of soil is found near the canal banks:
864 - Which type of soil is found near the canal banks:
Alkaline
865 - While classifying the soil according to textural class in equilateral triangle, suggested by the USDA, % of clay is plotted parallel to:
865 - While classifying the soil according to textural class in equilateral triangle, suggested by the USDA, % of clay is plotted parallel to:
Silt
866 - While diluting acid always add_____________________?
866 - While diluting acid always add_____________________?
Acid to water
867 - While handing concentrated acids. bases or other hazardous chemicals use_________________?
867 - While handing concentrated acids. bases or other hazardous chemicals use_________________?
Fume hoods
868 - White irregular spots between veins of upper leaves of maize plant shows deficiency of:
868 - White irregular spots between veins of upper leaves of maize plant shows deficiency of:
Boron
869 - Who characterized soil formation as set of "4" process______________________?
869 - Who characterized soil formation as set of "4" process______________________?
Simonson
870 - Who consider the various properties of soil in relation to plant production?
870 - Who consider the various properties of soil in relation to plant production?
Edaphologists
871 - Who gave the defination of humic acid ?
871 - Who gave the defination of humic acid ?
Felbeek
872 - Who gave the equation for study of soil property ?
872 - Who gave the equation for study of soil property ?
Jenny
873 - Who is the Father of the soil testing?
873 - Who is the Father of the soil testing?
M.L. Troug
874 - Who will decompose organic matter first:
874 - Who will decompose organic matter first:
Fungi imperfecti
875 - Widely spread saprophytic fungi is________________________?
875 - Widely spread saprophytic fungi is________________________?
Ascomycetes
876 - Wind laden with soil particles cembodies the abrasive action, which is:
876 - Wind laden with soil particles cembodies the abrasive action, which is:
Greatly increased
877 - Wind transported materials if it is silt dominated is__________?
877 - Wind transported materials if it is silt dominated is__________?
Loess
878 - Zinc deficiency occurs in crops growing in soils having high phosphorous:
878 - Zinc deficiency occurs in crops growing in soils having high phosphorous:
Calcareous soils
879 - Zinc sulphate is generally taking more production under:
879 - Zinc sulphate is generally taking more production under:
Alkali soils
880 - Zn, Fe, Cu, B, Mn and Mo are called micronutrient, because they are:
880 - Zn, Fe, Cu, B, Mn and Mo are called micronutrient, because they are:
Nutrients of microscopic significance
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