1 - The universal donor belongs to blood group
O
2 - ________ states that internal energy is a function of state and the increase in internal energy is equal to the sum of the heat supplied to system and work done by the system.
First law of thermodynamics
3 - . . . . . . . . . exerts a force on anything that has an electric charge.
Electric field
4 - ________ gives hardness to stainless steel.
Carbon
5 - A 4 kg object is moving horizontally with a speed of 5 m/s. To increase its speed to 10 m/s, the amount of net work required to be done on this object is:
150 J
6 - A bimetal made copper and iron strips welded together is straight at room temperature. It is held vertically with iron strip towards left and copper strip towards right. If this bimetal is heated, it will
Bend towards left
7 - A black body can absorb radiations of :
All wavelengths
8 - A body absorbs heat most if it is
Black and rough
9 - A body moving in a circular path with a constant speed has a
Constant kinetic energy
10 - A boy is swinging a ball attached to a string in a horizontal circle. If the string snaps
It will continue to travel along a tangent to the circle at the point the ball was at the time of snapping and finally fall down
11 - A car accelerates uniformly from 18 kmph to 72 kmph in 5 s. The acceleration of the car (in m/s2) is:
3
12 - A cell wall material present only in blue green algae and bacteria is
Muramic acid
13 - A convex mirror of focal length f (in air) is immersed in a liquid (u=4/3). The focal length of the mirror in the liquid will be :
F
14 - A dynamometer wattmeter can be used for
Both A & B
15 - A galvanometer can be converted to a voltmeter by connecting
A high resistance in series
16 - A man standing at the top of a tower has two spheres A and B. He drops sphere A downwards and throws sphere B horizontally at the same time. Which of the following is correct ?
Both the spheres will reach the ground simultaneously.
17 - A man stands on the pan of a balance holding a fish in his right hand and bucket of water in his left hand. If he transfers the fish into the bucket, the total weight on the pan
Remains the same
18 - A metal semiconductor junction diode is called ________
Schottky diode
19 - A mixture of water and alcohol can be separated by
Distillation
20 - A nuclear reactor is said to have become 'critical' when
It is ready to produce controlled energy
21 - A parallel-plate capacitor of capacitance C1 is made using two gold plates. Another parallel-plate capacitor of capacitance C2 is made using two aluminium plates with same plate separation, and all the four plates are of same area. If rg and ra are respec
C1 = C2
22 - A parallel-plate capacitor,with air in between the plates, has capacitance C. Now the space between the two plates of the capacitor is filled with a dielectric of dielectric constant 7. Then the value of the capacitance will become
7C
23 - A piece of wood is held under water. The upthrust on it will be:
Less than weight of the wood
24 - A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed?
From brown to blue-black
25 - A simple microscope consists of :
A short focus convex lens
26 - A small piece of a substance is weakly attracted by a strong magnetic field. The substance is
Paramagnetic
27 - A stone floor feels cold to the bare feet but a carpet on the same floor feels warm. This is because
The stone conveys the heat away from the feet more rapidly than the carpet
28 - A stone is dropped from the roof of a house towards the ground. The kinetic energy of the stone will be maximum:
Just before it touches the ground
29 - A storm is predicted if atmospheric pressure
Falls suddenly
30 - A viral species is a group of viruses that has
Both A & B
31 - Acceleration is the rate of change of
Velocity
32 - According to the quantum theory of light, the energy of light is carried in discrete units are called
Photons
33 - Acid rain is caused by
SO2 and NO2
34 - Adding Cl2 to benzene in the presence of AlCl3 is an example of :
Substitution reaction
35 - After reflection from a plane mirror the word will look like.
ECNALUBMA
36 - After removing two electrons from helium atom it become?
Alpha particle
37 - Alcoholic (– OH) group can be identified by :
FeCl3Test
38 - All of the following are true of neurons except that
They are a very specialized form of connective tissue
39 - Alternating current is converted into direct current by a
Rectifier
40 - Alum stops bleeding in minor cuts because of
Coagulation
41 - Aluminium salt commonly used to stop bleeding is
Aluminium sulphate
42 - Amount of water vapour (gaseous) in a given volume of air (cubic metre) is known as:
Absolute humidity
43 - An alloy used in making heating elements for electric heating device is
Nichrome
44 - An egg sinks in soft water but floats in a concentrated solution of salt because
The density of salt solution exceeds the density of eggs
45 - An electrochemical cell which is used as a source of direct electrical current at constant voltage under standard conditions is called a :
Battery
46 - An element of atomic no. 29 belongs to
D-block
47 - An emulsifier is an agent which
Stabilises an emulsion
48 - An object covers distance which is directly proportional to the square of the time. Its accelaration is
Constant
49 - Aqueous solution of which of the following is a good conductor of electricity
Ammonium acetate
50 - As we go from Equator to North pole the value of ''g', the acceleration due to gravity
Increases
51 - At the Curie temperature, the ferromagnetic materials get converted into
Paramagnetic materials
52 - Atmospheric pressure exerted on earth is due to
Gravitational pull
53 - Atoms of different elements have
Different atomic number and different number of valence electrons
54 - Baking soda is :
Sodium bicarbonate
55 - Basicity of boric acid, H3BO3 is
2
56 - Benzene cannot undergo :
Elimination
57 - Black lung disease occurs in people working in
Coal mines
58 - Blue green algae possess chlorophlyll along with a pigment known as
Phycobilin
59 - Branch of biology which deals with the study processing and preservation of food is called
Food technology
60 - Brine refers to :
Salt water
61 - Browning of paper in old books is caused by
Oxidation of cellulose
62 - Burning pyrites ore gives out
Sulphur dioxide gas
63 - By which organic compound all the oils are known ?
Hydrocarbon
64 - Calcium salts used as fertilizer is :
Calcium Sulphate
65 - Carbon dioxide is
A reducing agent
66 - Carborundum is another name of
Silicon carbide
67 - Catalyst is a substance which
None of these
68 - Cement is formed by strongly heating a mixture of
Limestone and clay
69 - Centrifugal force increases with
Acceleration
70 - Certain substances loose their electrical resistance completely at super low temperature. Such substances are called.
Superconductors
71 - Chemical composition of cement is
Limestone, Clay and Gypsum
72 - Cloudy nights are warmer compared to clear cloudless nights, because clouds mainly
Reflect back the heat given by earth
73 - Conversion of chemical energy into electrical energy occurs in
A battery
74 - Convex mirror is generally used in ________
Rear view mirror
75 - Convex mirrors are used as a rear view mirror in motor cycles because
It forms smaller image as compared with object
76 - Copper substances when exposed to air gains a green coating due to the formation of:
CuCO3 Cu(OH)2
77 - Curd is sour due to presence of
Lactic acid
78 - Cyanide poisoning causes death in seconds because
It causes cardiac arrest
79 - Cyanobacteria are also known as
Blue Green Algae
80 - Diamond is lustrous because
Its refractive index is high
81 - Drinking soda is
Acidic
82 - Dry ice is
Solid carbon dioxide
83 - Electric Motor converts ________ energy to mechanical energy
Electrical
84 - Emulsifier is an agent which
Stabilizes an emulsion
85 - Energy in reflected light :
Increases with the increase in angle
86 - Erg cross Sec is the unit of
Planck's constant
87 - Ethanol containing 5% water is known as :
Rectified spirit
88 - Even after sunset, the air near the Earth's surface continue to receive heat due to
Terrestrial Radiation
89 - Extensively used nitrogenous fertilizer is
Urea
90 - Fiber optics cable used in communication, works on the principle of
Total internal reflection of light
91 - Fish and other aquatic creatures can live inside a deep frozen pond because
There will always be water just beneath the ice level
92 - For a body moving with uniform acceleration its final velocity equals ________
2 x average velocity - initial velocity
93 - For an object, the state of rest is considered to be the state of ________ speed.
Zero
94 - For photoelectric effect to take place, the metal used as the cathode should have ________
Low work function
95 - For which of the following substances, the resistance decreases with increase in temperature?
Nichrome
96 - Formation of ozone hole is maximum over
Antarctica
97 - Formation of shadows can be explained by
Rectilinear propagation of light
98 - Galvanization of iron is carried out using
Zinc
99 - Gasoline is useful in cars because it has
Chemical potential energy
100 - German silver is an alloy of
Zinc, copper and nickel
101 - German silver used for making utensils is an alloy of
Copper, zinc, nickel
102 - Global warming is expected to result in
All of the above
103 - Glycol is added to aviation gasoline because it
Prevents freezing of petrol
104 - Hardest allotrope of carbon is
Diamond
105 - Heat from the Sun reaches the Earth by
Radiation
106 - Heat transfer by conduction occurs when molecules
Collide
107 - Higher concentration of nitrogen dioxide in atmosphere air causes
Bronchitis
108 - How many atoms of oxygen are in a glucose molecule?
6
109 - How much calorie of energy is released by a boiled egg ?
77
110 - Hydraulic brakes in automobile work on
Pascal's principle
111 - Hydroscope is an instrument that shows changes in:
None of these
112 - If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by
Lead
113 - If objects appear enlarged and inverted in a rear view mirror, then which type of mirror is used?
Concave
114 - If the sewage is fully oxidized, the nitrogen is in the form of
Nitrates
115 - If velocity is constant then acceleration is what?
Zero
116 - In ________ cells the genetic material is without any nuclear membrane covering and is directly submerged in the cytoplasm.
Bacteria
117 - In ________ motion of a body its velocity varies with time.
Non-uniform
118 - In a Carnot engine when heat is taken from the source, its temperature
Remains constant
119 - In a Cinema hall, the distance between the projector and the screen is increased by 2%. Then the intensity of illumination on the screen is
Decreased by 4%
120 - In a conductor
The valence band and the conduction band overlap each other
121 - In galvanization, iron is coated with
Zinc
122 - In its reaction with silver nitrate, C2H2 shows
Acidic property
123 - In silvery paints, the main constituent present is
Aluminium powder
124 - In spherical polar coordinates (l, q, a), q denotes the polar angle around z-axis and a denotes the azimuthal angle raised from x-axis . Then the y-component of P is given by
Psinq sina
125 - In surgery, metal pins are used for joining together broken bones. These metal pins remain uncorroded in the body. What is the material of these pins?
Titanium
126 - In the electroplating of gold, the electrolyte used is
Gold sulphate
127 - In the process of magnetisation of a bar
The entire bulk of the bar gets magnetised
128 - In total internal reflection, the light travel from
Denser to rarer medium and it occurs with no loss of intensity
129 - In which one of the following the phenomenon of total internal reflection of light is used ?
Formation of mirage
130 - Indicate the false statement about the resistance of a wire
It is directly proportional to the area of cross-section of wire
131 - Interveinal necrotic spots on leaves appear due to
SO2 injury
132 - It is dangerous to observe Solar eclipse with naked eyes because
Ultraviolet radiations from Sun burn our retina
133 - It is difficult to cook rice
At the top of a mountain
134 - It is easy to burst a gas-filled balloon with a needle than with a nail. It is because
Needle exerts more pressure than nail on the balloon.
135 - It takes much longer to cook food in the hills than in the plains, because
in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
136 - Kelps are obtained from
Marine algae
137 - Kirchoff's Voltage Law is known as
Conservation Energy
138 - Lakes freeze in cold countries in winter, leaving the water underneath at
4°C
139 - Land is considered a resource because it
Is used to produce things
140 - Light houses are places with powerful lights to :
Guide and warn the ships coming from different directions in the ocean
141 - Liver fluke is parasite in the liver of
All of the above
142 - Magnetic domains normally occur in
Iron
143 - Major gaseous pollutant of the thermal power station is
SO2
144 - Major portion of the earth's crust is mainly constituted by
Oxygen and Silicon
145 - Match the List-I with List-II and select the correct answer using the codes given below the listsList-I (Green house gas)List-II(Major source)F.Carbondioxide1.Enteric fermentation in cattleG.Methane2.Burning of fossilH.Chloroflro carbons3.Mercury compound
A
146 - Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants
A B C3 1 2
147 - Milk is
Emulsion
148 - Milk is a natural
Emulsion
149 - Most bacteria reproduce by
Binary fission
150 - Muddy water is treated with alum in purification process, it is termed as :
Coagulation
151 - Muscle fatigue is caused by the accumulation of :
Lactic acid
152 - Name two elements that find wide application in transistor industry.
Silicon and Germanium
153 - Natural rubber is a polymer of
Isoprene
154 - Nuclear Reactors are based on which of the following phenomenon?
Controlled Nuclear Fission
155 - Nuclear reactors used to produce electricity are based on
Nuclear fission
156 - On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because:
cohesion of mercury is greater than its adhesion with glass.
157 - On which principle does the hydraulic lift works?
Pascal's law
158 - One carat of diamond is equal to
200 mg
159 - Organic compounds are
Covalent compounds
160 - Oxide of sulphur present in the atmosphere are washed down by rains to cause :
Depletion of fossil fuel reserves
161 - Ozone saves the biosphere by absorbing high energy radiations called ________ .
Ultraviolet rays (UV)
162 - Peroxyacetyl nitrate is a
Secondary pollutant
163 - Person having blood group 'B' can donate the blood to person having blood group
B and AB
164 - Person who is colourblind cannot distinguish between
Red and green
165 - Persons working in cement plants and lime stone quarries are prone to disease like
Silicosis
166 - Photon is the fundamental unit/quantum of
Light
167 - Quartz is made of
Sodium Silicate
168 - RADAR is used for
Detecting and locating the position of objects such as Aeroplanes
169 - Radioactive elements can be traced out in living cell through a technique called
Auto radiography
170 - Rate at which velocity changes over time?
Acceleration
171 - Rear view mirror of car is convex or concave?
Convex
172 - Rock salt is a mineral containing
Sodium
173 - Ruby and sapphire are oxides of
Aluminium
174 - Saline soil contains
High concentration of salt
175 - Scientist who discovered blood groups was
Karl Landsteiner
176 - Sea water can be purified by the process of
Distillation
177 - Select the one which is not a mixture :
Distilled water
178 - Shock-absorbers are usually made of steel as it :
Has higher elasticity
179 - Silicon is a
Semiconductor
180 - Silicon is used in
All of these
181 - Silver nitrate solution is kept in brown bottles in laboratory because
Brown bottles stops the passage of light through it
182 - Sodium Carbonate is commonly known as
Washing Soda
183 - Sodium vapour lamps glow with yellow colour. This is due to
The emission of excess energy absorbed by sodium atoms, in the yellow region of the spectrum
184 - Solar energy is due to
Fusion reactions
185 - Soldering of two metals is possible because of the property of :
Cohesion
186 - Solids which conduct electricity at higher temperature but not at lower temperature are called
Semi-conductor
187 - Sound of frequency below 20 Hz is called
infrasonic
188 - Sound travels fastest in
Glass
189 - Sour milk contains
Lactic acid
190 - Sources of geothermal power are
Both A & B
191 - Speed in a given direction is called
Velocity
192 - Speed of sound in air is unaffected by change in
Pressure
193 - Spontaneous change is one in which there is:
A lowering of free energy
194 - Stars twinkle because
the refractive index of the different layers of the earth's atmosphere changes continuously.
195 - Stress can be defined as ________ quantity.
Tensor
196 - Suitable impurities are added to a semiconductor depending on its use. This is done in order to
increase its electrical conductivity
197 - Sun's heat reaches us by
Radiation
198 - Super conductors are substances that
Offer minimum resistance to flow of electric current
199 - Supersonic jet causes pollution by thinning of
O3 layer
200 - Synapse gap is present between which of the following?
Two neurons
201 - The addition of gypsum to portland cement helps in :
Preventing rapid setting of cement
202 - The angle in which a cricket ball should be hit to travel maximum horizontal distance is :
45° with horizontal
203 - The aprotic solvent is
HF
204 - The base of an electric iron is brightly polished mainly
To reduce heat loss by radiation
205 - The Bhopal gas tragedy was caused by the gas
Methyl Isocyanate
206 - The Bhopal tragedy was caused by the gas
Methyl isocyanate
207 - The boiling point of liquids vary as
Pressure varies
208 - The bone Humerus is found in
Upper arm
209 - The cathode of a lead storage battery is made up of
Lead
210 - The chemical name of baking soda is
Sodium bicarbonate
211 - The chemical name of 'Hypo' commonly used in photography is
Sodium thiosulphate
212 - The chief constituent of natural gas is:
Methane
213 - The ''Choke' used with a tube light is basically
An inductor
214 - The coloured discharge tubes for advertisement mainly contain
Neon
215 - The common name of sodium bicarbonate is
Baking soda
216 - The commonly used coolant in refrigerators is
Freon
217 - The coordination number of body centered atom in cubic structure is
8
218 - The cover of a solar cooker is made of glass because
It retains the heat inside by the green house effect
219 - The degree of dissociation of an electrolyte depends on
Dilution
220 - The density of a gas is maximum at
Low temperature, high pressure
221 - The depletion in Ozone layer is caused by ________ .
Chlorofluorocarbons
222 - The deterioration of a metal by an electrochemical process is commonly termed as
Corrosion
223 - The device which converts AC to DC is
Rectifier
224 - The dimension of which of the following is the same as that of impulse ?
Momentum
225 - The dimensional formula ML–1T–2 corresponds to
Modulus of elasticity
226 - The energy obtained from atoms is known as ________
Nuclear energy
227 - The energy that generates wind comes from what source?
Solar radiation
228 - The first law of thermodynamics is simply the case of
The law of conservation of energy
229 - The force exerted on an object is 200 N and its mass is 100 kg. Find the acceleration of the object.
2 m/sq.s
230 - The freezing point of fresh water is ________ .
0°C
231 - The gas causing acid rain in an industrial area is
Sulphur dioxide
232 - The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is
ozone
233 - The gas produced in marshy places due to decomposition of vegetation is
Methane
234 - The gas used for artificial fruit ripening of green fruit is –
Ethylene
235 - The gas used to dilute oxygen for breathing by deep sea divers is:
Helium
236 - The heat required to raise the temperature of body by 1 K is called
thermal capacity
237 - The highest volume of gases in lower atmosphere is comprised of
Nitrogen
238 - The important metal used with iron to produce stainless steel is
Chromium
239 - The least preferred technique in the disposal of Municipal Solid Waste is
Bricketting
240 - The litmus paper utilized in the chemical laboratories is made of :
Lichen
241 - The locomotion of insects to the source of light is called :
Phototropic
242 - The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as:
Ohms law
243 - The main buffer system of the human blood is
H2CO3 - HCO3
244 - The main component of liquid bleach is:
Sodium hypochlorite
245 - The mercury and sodium street lamps light up because of :
Atomic emission
246 - The metals commonly used for electroplating are
Chromium, Copper and Nickel
247 - The most abundant element in the earth's atmosphere is
Nitrogen
248 - The most abundant element in the human body is
Oxygen
249 - The most commonly used bleaching agent is
chlorine
250 - The natural resource, known as black gold is
Coal
251 - The natural source of hydrocarbon is
Crude oil
252 - The nitrogen fixing bacteria present in the root nodules of leguminous plant is
Rhizobium
253 - The nucleus of a hydrogen atom consists of
1 proton only
254 - The oil in the wick of lamp rises due to
Pheonomenon of capillarity
255 - The phenomenon of change in direction of light when it passes from one medium to another is called
Refraction
256 - The phenomenon which causes mirage is
Total internal reflection
257 - The point where total mass of a body is supposed to be concentrated is known as
Centre of mass
258 - The pollutant responsible for ozone holes is ________
CFC
259 - The presence of Cobalt in Vitamin B12 was established for the first time by
Spectroscopy
260 - The process of covering water pipes made of Iron with Zinc layer to prevent corrosion is called :
Galvanization
261 - The process of improving the quality of rubber by heating it with sulphur is called
Vulcanization
262 - The product, 9-nitroanthracene is obtained from anthracene by the action of
Nitric acid and acetic anhydride
263 - The propagation of sound waves in a gas involves
Adiabatic compression and rarefaction
264 - The radiant energy having lowest energy is
Microwave radiation
265 - The refractive index of a transparent medium is maximum for
Violet light
266 - The resources which can be used continuously, year-after-year are called
Renewable
267 - The reverse effect of X–ray emission is
Photoelectric
268 - The rice is cooked more quickly in a pressure cooker because
Water boils at a higher temperature under pressure.
269 - The S.I. unit of electric charge is :
Coulomb
270 - The smog is essentially caused by the presence of
Oxides of N and S
271 - The snow on the mountains does not melt all at once when it is heated by the sun because:
It reflects most of the heat from the sun
272 - The splitting of different colours of light in a prism is :
Disperson of light
273 - The splitting of white light into its components is due to:
Dispersion
274 - The spokes used in the wheel of a bicycle increase its
Moment of inertia
275 - The strength of an electromagnet can be increased by
All of the above
276 - The structure of (HPO3)3 is
Cyclic
277 - The substance most commonly used as a food preservative is
Sodium salt of benzoic acid
278 - The substance which does not expand on going from liquid state to solid state is
Type metal
279 - The sudden fall of atmospheric pressure indicates
Storm
280 - The term photon refers to
Sub atomic particle
281 - The transuranium elements are the chemical elements with atomic numbers greater than
92
282 - The unit of force is a
Derived Unit
283 - The unit of intensity of electric field is
N/c
284 - The unit of magnetic permeability is
Henry/meter
285 - The unit of Planck's constant is
Js
286 - The velocity of heat radiation in vacuum is
Equal to that of light
287 - The velocity of sound in moist air is more than in dry air because the moist air has
Less density than dry air.
288 - The wall of a dam is broader at the base
To withstand pressure that increases with depth
289 - The wavelength at which the peak of intensity of blackbody radiation occurs
Decreases with increase in temperature
290 - The wire of flash bulbs is made up of
Mg
291 - The working of a dry cell is based on
Electrolysis
292 - Thermal expansion of materials arises from
Asymmetry of potential energy curve
293 - These waves cannot be transmitted through vacuum.
Sound
294 - Total number of naturally occurring elements
92
295 - Two elements which can form a large number of compounds are
Carbon and Hydrogen
296 - Two identical solid pieces, one of gold and other of silver, when immersed completely in water exhibit equal weights. When weighed in air (given that density of gold is greater than that of silver)
The silver piece will weigh more
297 - Two stones of unequal masses are thrown vertically up with the same velocity. Which of the following will happen?
Both will reach the same height
298 - Two vectors are said to be equal if
Both magnitude and direction are same
299 - Type metal used in printing press is an alloy of
Lead and antimony
300 - Ultra purification of a metal is done by :
Zone melting
301 - Unit of impedance is ________
Ohm
302 - Universal gates are
NAND and NOR
303 - Velocity of sound in air does not change with the change of
Pressure of air
304 - Vinegar is an aqueous solution of
Acetic acid
305 - Volvox colonies are found in
Freshwater ponds
306 - Vulcanized rubber contains sulphur
3-5%
307 - Warming ammonium chloride with sodium hydrochloride in a test tube is an example of
Open system
308 - Wax used for making candle is chemically a mixture of
Aliphatic hydrocarbons
309 - What colour does blue and yellow make?
Green
310 - What happens when a drop of glycerol is added to crushed KMnO4 spread on a paper ?
There is a violent explosion.
311 - What is a Bakelite ?
Polymer
312 - What is the atomic number of mercury?
80
313 - What is the element that is in the highest percentage in the composition of the earth ?
Oxygen
314 - What is the maximum Water Vapour content in the atmosphere?
3 to 4 per cent
315 - What is the minimum distance (in metres) required to hear an echo?
17
316 - What is the principal ore of aluminium ?
Bauxite
317 - What is the product formed when sodium bicarbonate is heated strongly?
Sodium Carbonate
318 - What is the second largest component in milk ?
Fat
319 - What is the SI unit of electric current?
Ampere
320 - What is the SI unit of Force?
Newton
321 - What is the source of energy for the water cycle?
Sun
322 - What is used in storage batteries?
Lead
323 - What measures Air pressure?
Barometer
324 - What type of lens is a magnifying glass?
Converging
325 - When a body is immersed in a liquid, the force acting on it is
Both (A) and (B)
326 - When a bottle of perfume is opened in one corner of a room the smell spreads soon throughout the room. This is an example of
Diffusion
327 - When a ship enters the sea from a river what will be the effect?
It rises a little
328 - When a spoon is to be electroplated with nickel the spoon is
Made cathode and a pure nickel red, the anode
329 - When a vehicle passes, TV reception gets distorted. This is because
Spark plug creates electromagnetic disturbances
330 - When all the forces and torques are balanced in a mechanical body it is said to be in
Equilibrium
331 - When conc. H2SO4 is added to dry KNO3, brown fumes are evolved. These fumes are due to
NO2
332 - When heated from 0 to 100oC volume of a given mass of water will :
Decrease and then will increase
333 - When ice cubes are made, the entropy of water
Decreases
334 - When quick lime is added to water
Heat is liberated
335 - When the barometer reading dips suddenly, it is an indication of
Storm
336 - When two similar sources vibrate with slightly different frequencies, a regular rise and fall occurs in the loudness of tone. This phenomenon is known as
Beats
337 - Where do arteries carry blood?
Heart
338 - Where do the electrical charges reside in a charged conductor?
Outer surface of the body
339 - Where is a transistor most likely to be found ?
Hearing aid
340 - Which amidst the following is not a gem stone ?
Cat's-eye
341 - Which among the following determines the pitch of a sound?
Frequency
342 - Which among the following is a carbohydrate ?
Cane-sugar
343 - Which among the following is found in chlorophyll ?
Mg2+
344 - Which among the following stage is suitable indicator when solution of sodium carbonate is mixed with sulphuric acid ?
Methyl orange
345 - Which colour has the highest frequency?
Violet
346 - Which colour is produce by Arsenic during flame test?
Blue
347 - Which gas is most stable at room temperature?
N2
348 - Which is not a green house gas ?
N2O
349 - Which is the heaviest metal among the following?
Gold
350 - Which metal is the heaviest in periodic table among the following ?
Os
351 - Which of the following alloy is used in making magnet ?
Alnico
352 - Which of the following appeared to be with a significant potential for accumulation through food chains ?
DDT
353 - Which of the following caused radioactive pollution along the coast of Kerala ?
Thorium
354 - Which of the following devices can be used to detect radiant heat ?
Thermopile
355 - Which of the following elements is found in all organic compounds?
Carbon
356 - Which of the following elements is non-radioactive ?
Zirconium
357 - Which of the following elements is not present in stainless steel?
Tungsten
358 - Which of the following experiments analyzed the Fraunhofer lines of the solar spectrum?
Bunsen and Kirchhoff's experiment
359 - Which of the following group of elements are diamagnetic?
Argon, copper, silver
360 - Which of the following has pH value 7?
Pure Water
361 - Which of the following has the highest lattice energy?
NaF
362 - Which of the following in automobile exhaust can cause cancer?
Polyclinic hydrocarbons
363 - Which of the following is a man-made source of air pollution ?
Automobile exhaust
364 - Which of the following is a non renewable source of energy ?
Coal
365 - Which of the following is a renewable source of energy
Wind
366 - Which of the following is a vector quantity?
Area
367 - Which of the following is an iron ore ?
Magnetite
368 - Which of the following is caused by the higher concentration of Nitrogen and Phosphorous ?
Eutrophication
369 - Which of the following is not a form of Energy?
Pressure
370 - Which of the following is not a vector quantity ?
Speed
371 - Which of the following is not a vector quantity?
Density
372 - Which of the following is not caused by atmospheric refraction of light ?
Sun appearing higher in the sky than it actually is
373 - Which of the following is the maximum number of electrons that can be present in M-shell?
18
374 - Which of the following is the second largest source of global energy?
Renewable Energy
375 - Which of the following is used as a preservative to protect processed food?
Sodium metabisulphite
376 - Which of the following is used in dating archaeological findings ?
614C
377 - Which of the following is used to split white light into different colours ?
Prism
378 - Which of the following kinds of spectroscopy can provide information on the energy difference between the initial and final states rather the energy levels involved in the transition?
UV photoelectron spectroscopy
379 - Which of the following laws validates the statement that matter can neither be created nor destroyed ?
Law of conservation of mass
380 - Which of the following metals form an amalgam with other metals ?
Mercury
381 - Which of the following molecules has a bond order of 2.5?
F2
382 - Which of the following partially miscible liquid pairs has both lower and upper critical solution temperature?
Glycerine and m-toluene
383 - Which of the following pollutants is main product of automobile exhaust ?
NO
384 - Which of the following principle is used to produce ''low-temperatures' ?
Adiabatic demagnetisation
385 - Which of the following substance is highly plastic ?
Clay
386 - Which of the following vitamins is generally excreted by human in urine?
None of these
387 - Which of the following will replace hydrogen from acids to form salts ?
Na
388 - Which of the inert gases can form compounds?
Xenon
389 - Which of the process is known as nitrification?
Conversion of ammonia to nitrites
390 - Which of these acids is not organic in origin?
Sulphuric acid
391 - Which one among the following components can not be developed within an ''integrated circuit"?
Transformer
392 - Which one among the following doesn't have any effect on velocity of sound ?
Humidity
393 - Which one among the following is not a mixture?
Graphite
394 - Which one is a naturally occuring noble gas?
Argon
395 - Which one is the naturally occuring heaviest element?
Uranium
396 - Which one is the simplest aromatic hydrocarbon?
Benzene
397 - Which one of the following does not contain Silver ?
German Silver
398 - Which one of the following elements is least likely to be found in commercial fertilisers?
Silicon
399 - Which one of the following elements is used in the manufacture of fertilizers ?
Potassium
400 - Which one of the following group of gases contributes to the 'Green House Effect'?
Carbon dioxide and Methane
401 - Which one of the following is not a cause for present global warming and climate change ?
Deforestation
402 - Which one of the following is not reserve food of fungi
Starch
403 - Which one of the following is the correct sequence of passage of light in a compound microscope?
Condenser -Objective lens -Body tube -Eyepiece
404 - Which one of the following minerals is found in pure form?
Copper
405 - Which one of the following pairs is not correctly matched?
Haematite : Copper
406 - Which one of the following reflects back more sunlight as compared to other three?
Land covered with fresh snow
407 - Which one of the following was used as a chemical weapon in the first world war ?
Mustard gas
408 - Which phase change is an example of an exothermic process?
All the above
409 - Which phenomena shows the particle nature of light?
Photoelectric effect
410 - Which physical quantity is measured in 'siemens'?
Electrical conductance
411 - Which resource is both renewable and inexpensive?
Sunlight
412 - Which sources produce alternating current (AC)?
Hydro-electric generators
413 - Which type of mirror is used in the head lights of vehicles ?
Concave mirror
414 - Which type of radiation has the lowest penetrating ability?
Alpha
415 - White lung cancer is caused by
Textiles
416 - Who is the first person to define speed
Galileo
417 - Who measured the velocity of light first ?
Romer
418 - Why does water tank appear shallower when viewed from the top?
Due to refraction
419 - Why two thin shirts can keep us warmer than a single thick shirt in winter ?
Air layer between two shirts behaves like insulating media
420 - Yellow Cake an item of smuggling across border is
Uranium oxide
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