1 - ________ connects muscle to the bones.
Tendons
2 - 1 Joule is Equal to
10^7 ergs
3 - A bird sitting on a high tension electric wire does not get electrocuted because
It does not form a closed path for the flow of current
4 - A bomb at rest explodes into a large number of tiny fragments. The total momentum of all the fragments
Is zero
5 - A bullet is fired from a rifle which recoils after firing. The ratio of kinetic energy of the rifle to that of the bullet is
Zero
6 - A car parked in the sun with its windows closed gets terribly hot inside. This is due to
The greenhouse effect
7 - A colloidal system in which a liquid is dispersed in a liquid is called
Emulsion
8 - A concave lens always forms
A virtual image
9 - A cup of hot coffee is placed on a metal table in a room. By which of the following methods does it lose heat?
Conduction, convection and radiation
10 - A device used for converting a.c. into d.c. is called
Rectifier
11 - A dynamo is a device which
Converts mechanical energy into electrical energy
12 - A dynamo is used to convert
Mechanical energy into electrical energy
13 - A falling drop of rain water acquires the spherical shape due to
Surface Tension
14 - A Fuse wire is characterised by
High resistance and low melting point
15 - A gas thermometer is more sensitive than a liquid thermometer because a gas :
Expands more than a liquid
16 - A large number of bacteria in our digestive system, especially in the ________ and large intestine are important in completing digestive processes
Small intestine
17 - A man stands in a lift which accelerates upwards. The resultant reaction force on the floor of the lift is
Greater than the weight of the man
18 - A metal plate with a circular hole at the centre is heated. What will happen to the area of the hole ?
Increase
19 - A person is hurt on kicking a stone due to
Reaction
20 - A photo-electric cell converts
Light energy to electrical energy
21 - A rear-view mirror for driving is
Convex
22 - A star appears twinkling in the sky because of
Refraction of light by atmosphere
23 - A substance which readily forms colloidal solution in contact with water is called
Hydrophilic colloid
24 - A transformer works on the principle of
Mutual induction
25 - A wavelength of 0.3 m is produced in air and it travels at a speed of 300 m/s. Then it will be an
Audible wave
26 - A wire carrying current is
Neutral
27 - A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipate
> P
28 - Absolute Zero is defined as
The temperature at which all molecular motion ceases
29 - According to Rutherford's atomic model, the electrons inside an atom are
Not Stationary
30 - According to special theory of relativity the mass of a particle
Increases with increase in velocity with respect to an observer.
31 - According to the theory of relativity, which of the following always remains constant ?
Velocity of light
32 - Air is said to be saturated when
It contains the maximum content of water vapour
33 - All isotopes of the same element have ________
The same atomic number but different atomic masses
34 - All isotopes of the same element have ______________
The same atomic number but different atomic masses
35 - 'All the four quantum numbers of two electrons in an atom are not the same.' It is the law of –
Exclusion Principle of Pauli
36 - Alum is used as
A purifier for water
37 - Amoeba proteus was discovered by
Johann Rösel von Rosenhof
38 - Among the following the hardest metal is
Tungsten
39 - Among the following, which is always found in free-state in nature?
Gold
40 - An atom with more neutrons than protons is called
Isotope
41 - An electric fuse is based on
The heating effect of the current
42 - An electron and a proton starting from rest get accelerated through potential difference of 100 kV. The final speed of the electron and the proton are Ve and Vp respectively. Which of the following relations is correct?
Ve > Vp
43 - An ideal gas cannot be
Liquified
44 - Antacid tablets consist of
Hydroxides of magnesium and aluminium
45 - Antibodies is produced in the plasma of blood by
Lymphocytes
46 - Aqua regia is a 1 : 3 mixture, by volume, of
Conc. nitric acid and conc. hydrochloric acid
47 - Aquaregia is a mixture of the following in the ratio 1 : 3 by volume
Conc. HNO3 and conc. HCl
48 - Arteries supplying blood to the heart are called
Coronary arteries
49 - As water is cooled from 4 deg C to 0 deg C, its density
Decreases
50 - Aspirin is
Acetyl Salicilic acid
51 - Aspirin is common name of
Acetyl Salicylic Acid
52 - At boiling point of liquids, its
Temperature remains constant
53 - At constant pressure, the volume of a fixed mass of a gas is directly proportional to its absolute temperature. It is the statement of
Charle's Law
54 - At what temperature (in degree Celsius), the numerical values on Celsius and Fahrenheit scales become equal?
–40
55 - At what temperature (in Fahrenheit) pure water freezes?
32
56 - Atomic hydrogen has a life period of
A fraction of a second
57 - Bats can sense obstacles because they produce
Ultrasonic sound waves
58 - Besides CO2, the other green house gas is
CH4
59 - 'Bhopal gas tragedy' 1984 is related to which gas
Methyl isocyanate
60 - Bleaching powder is used in drinking water as a/an
Disinfectant
61 - Bolometer is used to measure
Temperature
62 - Boyle's law relates to
Kinetic Theory of Gases
63 - Brass is made of
Copper and zinc
64 - Bridgmanite is
Earth's most abundant mineral
65 - Bronze is an alloy of
Copper and Tin
66 - Brown stains in vessels and clothes indicate the presence of high quantities of ________ in water.
None of these
67 - Bubbles of air rise up through liquids due to
Viscosity and buoyancy
68 - By how many times are the Electrostatic forces stronger than the Gravitational Forces for a fixed distance?
1036
69 - By-product obtained by soap industry is
Glycerol
70 - Candle is a mixture of
Paraffin was and stearic acid
71 - Carbon Arc lamps are commonly used in
Cinema projectors
72 - Carbon monoxide is an inflammable gas. Which one of the following is also inflammable?
Hydrogen
73 - Cellular respiration occurs in
Mitochondria
74 - Cement containing excess amount of lime
Becomes more strong
75 - Chemical formula of washing soda is
Na2CO3.10H2O
76 - Chloroform can be used as
Anaesthetic
77 - Choose the incorrect statement pertaining to organic compounds
They are not easily combustible
78 - Citric acid is present in free form in
Lemon
79 - Cloud is a colloidal dispersion of
Water drops in a dispersion medium of air
80 - Coal is formed from
Compressed and hardened biomass
81 - Combustion of a candle is a/an
Exothermic reaction
82 - Commercial nitric acid is coloured because it contains dissolved :
Nitrogen dioxide
83 - Commercial Vaseline is derived from
Petroleum
84 - Commercially, sodium bicarbonate is known as
Baking soda
85 - Consider the following statements : (01) There is no net moment on a body which is in equilibrium. (02) The momentum of a body is always conserved. (03) The kinetic energy of an object is always conserved. Which of the statements given above is/are cor
1 and 2 only
86 - Contact force is another name for ________
Muscular force
87 - Copper is refined by
Roasting
88 - Denatured spirit is ethanol mixed with
Pyridine
89 - Depletion of ozone layer causes
Skin cancer
90 - During hot weather, the fan produces a feeling of comfort. This is because
Our perspiration eva-porates rapidly
91 - During thunderstorm you are travelling in a car. To protect yourself from the lightning you will have to
Remain in the car
92 - Dynamo is a device for converting
Mechanical energy into electrical energy
93 - Earliest thermometer was developed by
Galileo
94 - Earth's atmosphere is an envelope of gases extending to a height of
200 km
95 - Echolocation is an adaptation bats use to
All of the above
96 - Electric power is measured in units of
Watt
97 - Electrical burns occur principally because of
The heat generated by the flow of electrical current through the body
98 - Electrical Energy is the energy of
Electrons
99 - Electrons carry a
Negative Charge
100 - Ethylene is a ________ molecule.
Nonpolar
101 - 'Farad' is the unit of :
Capacitance
102 - Fertilization in human takes place inside
Oviduct
103 - Find the current (in A) when a charge of 1200C flows in 6 seconds.
200
104 - Find the current (in A) when a charge of 500 Coulomb flows in 25 seconds.
20
105 - Flemings ''Left hand Rule" is associated with the effect of
Magnetic Field on current
106 - For a ray of light to suffer total internal reflection it has to pass from :
Air to water
107 - Gelatin is mostly used in making ice-creams in order to
Stabilise the colloid and prevent crystallisation
108 - Global warming is mainly due to accumulation of
Carbon dioxide
109 - Gold dissolves in
Aqua regia
110 - Green house effect is accelerated by
All of these
111 - Green mould is common name for
Penicillium
112 - Greenhouse effect is caused by
Carbon dioxide
113 - Hard water and soft water can be distinguished by using
Detergent
114 - Heavy metal pollution of water is caused by:
Paints
115 - How many electrons are there in a Hydrogen atom?
One
116 - Ice cubes are added to a glass of pure water and a glass of pure alcohol. The ice would be
At a higher level in water
117 - If a force acts upon two objects at rest, and having different masses for the same amount of time, then which one of the following will be the same for both the objects?
Momentum
118 - If cream is removed from milk, its density
Increases
119 - If the wavelengths corresponding to ultraviolet, visible and infrared radiations are given as lUV, lVIS and lIR respectively, then which of the following gives the correct relationship among these wavelengths?
LUV < lVIS < lIR
120 - If water smells bad, then that odour can be removed by adding
Activated carbon
121 - In a filament type light bulb most of the electric power consumed appears as
Infra-red rays
122 - In a rechargeable cell what kind of energy is stored within the cell?
Chemical energy
123 - In addition to hydrogen, the other abundant element present on Sun's surface is
Helium
124 - In an oxygen molecule, two atoms are united by
Two bonds
125 - In animals like Annelids, Molluscs, organs have associated to form functional systems, each system concerned with a specific physiological function. This pattern is called ________ system level of organization.
Organ
126 - In chemical terms, what are alums used for purifying water for drinking purposes ?
Double sulphates
127 - In deep-sea diving, divers use a mixture of gases consisting of oxygen and
Nitrogen
128 - In general, which is the cause of a land breeze?
Temperature
129 - In hydro power station, the motion produced in turbines is due to
Flow of water
130 - In MRI machine, which one of the following is used?
Magnetic wave
131 - In N2- fixation process, nitrite is converted to nitrate by
Nitrobacter
132 - In plants which one of the following tissues is dead ?
Sclerenchyma
133 - In sunlight a rose appears red. In green light, the same rose appears
Black
134 - In test tube baby
Fertilization of ova takes place in test tube which development of embryo occur in uterus
135 - In the absence of ozone layer, which rays will enter into atmosphere?
Ultraviolet
136 - In the Earth, the weight of a body is maximum at the
Surface
137 - In uterus embryo get their nutrition through a structure called
Placenta
138 - Iodex, a pain relief balm, has the smell of ________ .
Methyl salicylate
139 - It is difficult to fix a nail on a freely suspended wooden frame. Which law supports this statement?
Newton's third law
140 - It is more difficult to walk on a sandy road than on a concrete road because
the friction between sand and feet is less than that between concrete and feet.
141 - J.J. Thomson's proposed model of atom is generally called ________ model.
Plum and pudding
142 - Kilohertz is a unit which measures
Electromagnetic radio wave frequencies
143 - L.P.G. is mostly liquefied
Butane
144 - Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to:
Both the heating effect of current and hysteresis loss
145 - Late blight of potato is caused by
Phytophthora infestens
146 - Light from the Sun reaches us in nearly
8 minutes
147 - Light year is a unit of
Distance
148 - Limestone is a raw material used by which industry?
Cement
149 - Magnetism at the centre of a bar magnet is
zero
150 - Main pollutants released from iron and steel industry are
CO, CO2 and SO2
151 - Match the List-I with List-II and select the correct answer using the codes given belowList-I (Vitamin)List-II(Chemical compound)F.Vitamin A1.ThiaminG.Vitamin B12.RetinolH.Vitamin C3.Ascorbic acidJ.Vitamin E4.TocopherolCodes :FGHJA.4132B.2314C.4312D.2134
D
152 - Mercury is a :
Liquid metal
153 - Metal are good conductors, because
They contain free electrons
154 - Metal present in Haemoglobin
Iron
155 - Metals are good conductors of electricity because
They contain free electrons
156 - Mirage is due to:
Unequal heating of different parts of the atmosphere
157 - Mist is caused by
Water vapour at low temperature
158 - Molasses a by-product in the manufacture of sugar, is converted into
Alcohol
159 - Necessary element of change in solar energy to electrical energy
Silicon
160 - Nitric acid does not react with
Gold
161 - Nitrification is the biological process of converting
Ammonia into nitrite
162 - Nitrogen fixation is a process of
Conversion of molecular nitrogen to ammonia
163 - Nitrogen in water is commonly found in the form of
Nitrite
164 - Normal rainwater has a pH level of
5.6
165 - Normal rainwater is slightly acidic due to the presence of
Carbon dioxide
166 - Now-a-days yellow lamps are frequently used as street lights. Which of the following gases is used in these lamps ?
Sodium
167 - Nuclear sizes are expressed in a unit named
Fermi
168 - Number of 6.023 × 1023 atoms present in one mole of a gas at STP is
6.023 × 1023
169 - Of the following properties of a wave, the one that is independent of the other is its
amplitude
170 - Ohm's law is valid in case of
Conductor
171 - On a cold day when the room temperature is 15°C, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15°C, because :
Metals are good conductors of heat
172 - On the Kelvin scale, the melting point of ice is
273K
173 - One of the following is used to dissolve noble metals. That is
Aqua regia
174 - Optical Fibre technology works on which of these principles of Physics?
Total internal reflection of Light
175 - Ozone layer in the upper parts of the atmosphere serves as a protective shield against harmful
Solar ultraviolet radiation
176 - Pepsin is an enzyme that digests ________ .
Proteins
177 - Peptization is a process of
Dispersing precipitates into colloidal solution
178 - Percentage of carbon in steel ranges from
0.1 to 1.5
179 - Periodic table contains how many groups
18
180 - Periodic table contains how many periods
7
181 - pH scale ranges from
0 – 14
182 - Philosopher's Wool is
Zinc oxide
183 - Plants are dried up in winter due to frost because
There is mechanical loss of tissues and drought condition prevails
184 - Pure water is bad conductor of electricity because it is
Feebly ionized
185 - Pycnometer is an instrument used to measure the
Density
186 - Rate of doing work is called
Power
187 - Rectified spirit is :
95% ethyl alcohol
188 - Reflex actions are controlled by
The Spinal Chord
189 - Relative humidity is expressed as
Percentage
190 - Resistance of human body in dry condition
100000 ohm
191 - Rise of oil a wick is due to
Surface tension of the oil
192 - Rusting of iron takes place due to
Oxidation
193 - Saccharin is made up of
Toluene
194 - Safety fuse wire used in domestic electrical appliances is made of metal of low
Melting point
195 - Saliva secreted from mouth digest
Starch
196 - Silver halides are used in photographic plates because they are
Reduced by light
197 - Smoke is formed due to
Solid dispersed in gas
198 - Soap helps in better cleaning of clothes because
It reduces the surface tension of solution
199 - Soap is prepared by boiling caustic soda with
Fats
200 - Sound waves in air are
longitudinal
201 - Sour taste of lemon is due to the presence of which of the following ?
Citric acid
202 - Specific gravity is defined as the ratio of
Density of the substance to the density of water
203 - Sponges belongs to the phylum
Porifera
204 - Steel contains
0.1 – 5% carbon
205 - Steel is more elastic than rubber because it :
Is deformed very easily
206 - Study of algae is called
Phycology
207 - Study of butterfly is
Lapidopterology
208 - Study of female reproductive system is
Gyneocology
209 - Super cooling stands for cooling of a liquid :
Below freezing point
210 - Superconductors are those elements
Whose resistance falls almost to zero at very low temperatures
211 - Surface water is a better source of drinking water because it is poor in
Arsenic
212 - Suspension particles have the size between
10–2 – 10–4 cm
213 - Synthetic detergents are prepared from
Hydrocarbons of petroleum
214 - Tear gas used by the police to disperse the mob contains
Chlorine
215 - The absolute zero is a temperature at which ________
Molecular motion in a gas would cease
216 - The acid which fails to liberate carbon dioxide from sodium bicarbonate is :
Sulphuric acid
217 - The advantage of detergents over soaps is
Detergents give lather even with hard water
218 - The atmospheric gas that is mainly responsible for green house effect :
Carbon dioxide
219 - The atmospheric layer reflecting radio waves is called
Ionosphere
220 - The average kinetic energy of the molecules of an ideal gas is directly proportional to
Absolute temperature of the gas
221 - The best material for the core of a transformer is
Soft iron
222 - The boiling point of water decreases at higher altitudes is due to
Low atmospheric pressure
223 - The brain is covered by
All the above
224 - The cause for the Tsunami, as deduced by the seismologists, is
Deformation of sea floor and vertical displacement of water
225 - The components of water can be separated by
Chemical methods
226 - The compound to which H2 does not add is
Tetraphenyl ethylene
227 - The density of water is 1 g/cc. This is strictly valid at
4°C
228 - The depletion of ozone layer is due to
Chlorofluorocarbons
229 - The device used for measuring the wavelength of X-rays is
Bragg Spectrometer
230 - The electric current in a metal wire is due to the flow of -
Electrons
231 - The element absorbed both in cation and anion form is
Nitrogen
232 - The element used in the manufacture of safety matches is
Phosphorous
233 - The energy associated with motion is called
Kinetic energy
234 - The flow of thermal energy is called
Heat
235 - The ''four stroke petrol engine' is based on
Otto-cycle
236 - The fundamental particles present in the nucleus of an atom are
Proton, neutron
237 - The fuse in an electric circuit is connected in
Series with live
238 - The fuse in our domestic electric circuit melts when there is a high rise in
Current
239 - The gas that is used in the manufacture of vanaspati ghee is :
Hydrogen
240 - The gas used in the manufacture of vanaspati from vegetable oil is
hydrogen
241 - The gas which emits from rice field is
Methane
242 - The gas which turns into liquid at the lowest temperature among the following is
Hydrogen
243 - The graphite rods in the nuclear reactor
convert fast moving neutrons into thermal neutrons
244 - The green colour seen in firework displays is due to the chloride salt of :
Barium
245 - The greenhouse effect is caused by the higher level of which gas in the atmosphere ?
Carbon dioxide
246 - The half life period of an isotope is 2 hours. After 6 hours what fraction of the initial quantity of the isotope will be left behind?
44569
247 - The hardest form of carbon is
diamond
248 - The hottest part of the gas flame is known as
luminous zone
249 - The human body is made up of several chemical elements; the element present in the highest proportion (65%) in the body is
oxygen
250 - The inexpensive and commonly used variety of glass is called soda glass. It is called so because
is made using soda(sodium carbonate)
251 - The ionic radii of N3-, O2-, F- and Na+ follows the order
N3- > O2- > F- > Na+
252 - The isomerism which exists between CH3CHCI2 and CH2CI. CH2CI is
positional isomerism
253 - The items amenable to detection by soft x-rays are
genuine coins from counterfeit coins
254 - The laws which govern the motion of planets are called ________
Kepler's Laws
255 - The lowest layer of earth's atmosphere is
Troposphere
256 - The lustre of the metals is because of
Reflection of light due to the presence of free electrons
257 - The mass number of a nucleus is
the sum of the number of protons and neutrons present in the nucleus
258 - The mass of one Avogadro number of helium atom is
4 x 6.02 x 1023 gram
259 - The material used in the manufacture of lead pencil is
Graphite
260 - The material which can be deformed permanently by heat and pressure is called a
thermoset
261 - The metal whose electrical conductivity is more, is
Silver
262 - The most abundant element by number in the living system is :
Hydrogen
263 - The most abundant metal in the Earth's crust is
Aluminium
264 - The most important ore of aluminium is
bauxite
265 - The most important ore of lead is
Galena
266 - The name of unreactive gas is
Nitrogen
267 - The new strain of bacteria produced by biotechnology in alcohol industry is
Pseudomonas putida
268 - The next higher homologue of C6H14 is
C7H16
269 - The non-metal found in the liquid state is
Bromine
270 - The number of atoms present in 21.6 gram of silver (atomic weight = 108) are same as the molecules in
12 moles of KMnO4
271 - The number of electrons presents in H+ is
zero
272 - The number of waves in n x 10th Bohr's orbit are
n
273 - The number of waves made by an electron moving in an orbit having maximum magnetic quantum number is +3
4
274 - The odometer guage indicates
The distance travelled by a vehicle
275 - The oil used in the froth floatation process is
pine oil
276 - The ore of Aluminium is
Bauxite
277 - The organic reaction represented by equation CH3 - CH = O + H2NOH gives CH3 - CH - NH + H2O is an example of
a condensation reaction
278 - The pair of compounds used as anaesthetic in medicines :
Nitrous oxide, Chloroform
279 - The percentage of nitrogen present in ammonium sulphate is :
0.27
280 - The period of revolution of a geostationary satellite is
24 hours
281 - The plasma of the blood contains which among the following constituents? I. Proteins II. Salts III. Hormones
All I, II and III
282 - The pollination by snail is called
Malacophily
283 - The process of removing calcium and magnesium from hard water is known as
Water softening
284 - The purest form of water is
Rain water
285 - The purpose of choke in a fluorescent lamp is :
To decrease the current flow
286 - The quality of petrol is expressed in terms of
Octane number
287 - The rate of change of linear momentum of a body falling freely under gravity is equal to it's ________ ?
Weight
288 - The reaction intermediate formed during the preparation of diethyl ether from ethanol by treatment with H2SO4 is
Carbocation
289 - The reflector of a search light is a :
Concave mirror
290 - The right portion of human heart receives ________ blood.
Impure
291 - The SI unit for measuring work and energy is
Joule
292 - The SI unit of resistance is:
Ohm
293 - The single membrane surrounding vacuoles in plant cells is known as
Tonoplast
294 - The 'solid waste' is also known as
Sludge
295 - The spring balance works on the principle of ________ .
Hooke's Law
296 - The spring constant of a spring depends on its
Thickness, its diameter and its material
297 - The subcellular organelle not bound by a single membrane is
Lysosomes
298 - The temperature which has the same reading on both Fahrenheit and Celsius scales is
–40°
299 - The third shell of an atom can have a maximum of ______ electrons.
18
300 - The unit of electrical power is
Watt
301 - The value of Avogadro Number is
6.023 × 1023
302 - 'Therm' is the unit of
Heat
303 - This group of alumino-silicate minerals is widely used in making electrical insulators
Mica
304 - Time of exposure required for taking photograph of an object depends upon the
Brightness of the object
305 - To measure the speed of an approaching car a police officer shines
Radio waves on it
306 - To resolve an object in an electron microscope,
The wavelength of the electrons must be close to the diameter of the object
307 - Total internal reflection can not take place when light goes from :
Water to glass
308 - Total number of elements in the Periodic table
118
309 - Transformer is a device to convert
Low voltage A.C. into high voltage A.C.
310 - Transition ions absorb light in :
Visible region
311 - Tungsten is used for the manufacture of the filament of an electric bulb, because
It has a very high melting point
312 - Velocity of sound in air does not depend on
Pressure of air
313 - Ventilators are provided near the ceiling of the room because
These provide cross ventilation in the room
314 - Water can be separated from alcohol water mixture by
Distillation
315 - Water will not be vapourised if
The humidity is 100%
316 - What do you understand by the term Espuma ?
Foam
317 - What happens when a chemical bond is formed ?
Energy is always absorbed
318 - What is a mixture of potassium nitrate, powdered charcoal and sulphur called?
Gun powder
319 - What is refractive index ?
It is defined as the ratio of speed of light in vacuum to the speed of light in the medium.
320 - What is the chemical name for ‘Baking Soda' ?
Sodium bicarbonate
321 - What is the element required for solar energy conversion ?
Silicon
322 - What is the mass percentage of oxygen in carbon dioxide (CO2)?
0.727
323 - What is the minimum escape velocity of rocket to be launched into space ?
11 Km/Sec.
324 - What is the reason for formation of Mirage in desert?
Both Refraction and Total internal reflection of light
325 - What is the SI unit of temperature?
Kelvin
326 - What is the unit of the physical quantity "Inductance"?
Henry
327 - What is the value of 1 kW = ?
1000 W
328 - What material is used to make electric heater coil ?
Nichrome
329 - What part of the atom has a positive charge?
Proton
330 - What part of the body controls balance?
Cerebellum
331 - What particles move around the nucleus of an atom and are negatively charged?
Electrons
332 - What type of lens is used in a magnifying glass
Convex
333 - When a Cuttlefish is described as a Molluscs, it is at which level of classification?
Phylum
334 - When a nutrient like fertilizer is present in large quantities in a water bodies, plants grow and decay in large numbers because of suffocation of pond that does not leave enough oxygen needed to support life. This type of pollution is called
Eutrophication
335 - When an electric bulb breaks, there is an explosive sound. That is due to
The air outside rushing in to fill the vacuum inside the bulb
336 - When formaldehyde and potassium hydroxide are heated, we get
Methyl alcohol
337 - When Hydrogen starts burning in air, it produces ?
Water
338 - When the main switch of the house is put off it disconnects the
Live wire and the neutral wire
339 - When the Sun is near the horizon during the morning or evening, it appears reddish. The phenomenon that is responsible for this observation is
Scattering of light
340 - Where does the oxygen that keeps us alive come from?
Water
341 - Which among the following is a covalent compound ?
Carbon tetrachloride
342 - Which among the following is liquid non-metal ?
Bromine
343 - Which among the following is not a true fruit?
Apple
344 - Which among the following is used to treat Indigestion?
Antacid
345 - Which among the following is/are female hormones? (i) Estrogen (ii) Progesterone (iii) Testosterone
(i) and (ii)
346 - Which colour is the complementary colour of yellow ?
Blue
347 - Which combination of colour is the most convenient during day and night time ?
Red and green
348 - Which component referred to as 'Milk sugar'?
Lactose
349 - Which compressor is usually used in AC?
Reciprocating
350 - Which elements are malleable and good conductors of electricity?
Tin and silver
351 - Which gas does not form the part of atmosphere ?
Chlorine
352 - Which is a common first indicator of an approaching thunderstorm?
A buildup of dark clouds
353 - Which is a natural colloid ?
Blood
354 - Which is known as carbolic acid?
Phenol
355 - Which is the point from where an azimuth originates?
North
356 - Which is the purest commercial form of iron ?
Wrought iron
357 - Which method will be employed to test the hardness of water?
Formation of lather with soap
358 - Which of the following acids serves as an electrolyte in a lead storage battery?
Sulphuric acid
359 - Which of the following acts as best adsorbent?
Activated Coconut Charcoal
360 - Which of the following bacterium causes crown gall disease in plants?
Agrobacterium tumefaciens
361 - Which of the following characteristics of light remains unchanged when light travels from vaccum enters water?
Frequency
362 - Which of the following chemical materials is responsible for the depletion of ozone layer in the atmosphere ?
Chlorofluorocarbon
363 - Which of the following compounds is commonly used as an antiseptic in mouthwashes and toothpastes ?
Sodium chloride
364 - Which of the following have the same unit ?
Work and torque
365 - Which of the following is a conductor of electricity ?
Salt water
366 - Which of the following is also used as a Bio fertilizer?
None of these
367 - Which of the following is an antidiabatic drug?
Insulin
368 - Which of the following is an example of continous emission spectrum?
Spectrum of an oil frame
369 - Which of the following is an insulator?
Glass
370 - Which of the following is chiefly present in LPG (Liquefied Petroleum Gas) ?
Butane
371 - Which of the following is not a chemical reaction?
Conversion of water into steam
372 - Which of the following is not a donor atom?
Aluminium
373 - Which of the following is not a nitrogenous fertilizer ?
Ca(CN)2
374 - Which of the following is not soluble in water ?
Zinc sulphate
375 - Which of the following is not true about X-rays?
Have low penetrating power
376 - Which of the following is the correct sequence of countries in terms of maximum carbon dioxide emission?
China, USA, European Union, India
377 - Which of the following is the strongest base in aqueous solution ?
Diethylamine
378 - Which of the following is used for refrigeration?
Freon
379 - Which of the following is used to increase the anti-knocking property of petrol ?
Tetraethyl lead
380 - Which of the following metals causes Itai-Itai disease ?
Cadmium
381 - Which of the following metals has least melting point ?
Mercury
382 - Which of the following metals is used for the manufacture of heating elements provided in electric iron ?
Nichrome
383 - Which of the following statements are correct about chloroform? a. Liquid fuel b. Anaesthetic in nature c. Produces phosgene d. Fire extinguisher
B, C
384 - Which of the following type of coal has the lowest proportion of volatile matter ?
Anthracite
385 - Which of the following was the first theory of superconductivity?
London theory
386 - Which of the fungi is commonly called as bread mould
Rhizopus
387 - Which of these is unique to flowering plants?
Double fertilization
388 - Which one is not found in the composition of Plasma membrane
Minerals
389 - Which one is the lightest element in the periodic table
Hydrogen
390 - Which one of the following acids is used in battery ?
Sulphuric acid
391 - Which one of the following completes the given statement correctly ?A seed is a ripened
Ovule
392 - Which one of the following forms of phosphorus is most reactive?
White phosphorus
393 - Which one of the following is a major green house gas?
Carbon dioxide
394 - Which one of the following is an example of a gel ?
Face cream
395 - Which one of the following is most electronegative?
Carbon
396 - Which one of the following is not a ‘green house gas' ?
Nitrogen
397 - Which one of the following is not coal variety?
Dolomite
398 - Which one of the following is the largest phylum in the animal kingdom ?
Arthopoda
399 - Which one of the following is used as preservative for foodstuff ?
Sodium Benzoate
400 - Which one of the following metals does not react with water to produce Hydrogen ?
Cadmium
401 - Which one of the following statement is correct ?Ozone is found in the earth's atmosphere mostly between
20 and 50 km
402 - Which organ has finger like outgrowths which are called as Villi (Singular Villus)?
Small Intestine
403 - Which organelle in the cell, other than nucleus contains DNA
Mitochondria
404 - Which part of Nervous system controls involuntary actions
Medulla oblongata
405 - Which part of the brain is responsible for consciousness?
Cerebrum
406 - Which statement best describes an igneous intrusion?
Magma is injected into surrounding rock forming an igneous intrusive
407 - Which term is not associated with sound wave?
Candela
408 - Which tube used to produce X-ray?
Coolidge tube
409 - Who defined the law of gravitation ?
Newton
410 - Who developed Hydrogen Bomb?
Edward Teller
411 - Who developed the model of atomic structure ?
Bohr and Rutherford
412 - Who gave the Theory of Relativity?
Albert Einstein
413 - Who was the first scientist to discover Electrons?
J.J Thompson
414 - Why the needle of iron swims on water surface when it is kept gently ?
Due to surface tension
415 - Wollen clothes keep the body warm because
Wool is a bad conductor
416 - Wood spirit is
Methyl alcohol
417 - Working of safety fuses depends upon (01) magnetic effect of the current (02) chemical effect of the current (03) magnitude of the current (04) heating effect of the current. Select the correct answer using the code given below.
3 and 4 only
418 - X–rays are
Neutral particles
419 - X-rays region lies between
Gamma-rays and ultraviolet region
420 - Xylem helps in transportation of which of the following?
Water
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