MCQOPTIONS
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MCQOPTIONS
This section includes 2016 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 1951. |
Pick out the scalar quantity |
| A. | force |
| B. | pressure |
| C. | velocity |
| D. | acceleration |
| Answer» C. velocity | |
| 1952. |
If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same |
| A. | velocity |
| B. | momentum |
| C. | acceleration |
| D. | kinetic energy |
| Answer» C. acceleration | |
| 1953. |
Rectifiers are used to convert |
| A. | Direct current to Alternating current |
| B. | Alternating current to Direct current |
| C. | high voltage to low voltage |
| D. | low voltage to high voltage |
| Answer» C. high voltage to low voltage | |
| 1954. |
Metals are good conductors of electricity because |
| A. | they contain free electrons |
| B. | the atoms are lightly packed |
| C. | they have high melting point |
| D. | All of the above |
| Answer» B. the atoms are lightly packed | |
| 1955. |
Sound waves in air are |
| A. | transverse |
| B. | longitudinal |
| C. | electromagnetic |
| D. | polarised |
| Answer» C. electromagnetic | |
| 1956. |
Planets do not twinkle because |
| A. | they emit light of a constant intensity |
| B. | their distance from the earth does not change with time |
| C. | they are very far away from the earth resulting in decrease in intensity of light |
| D. | they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable |
| Answer» E. | |
| 1957. |
Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension? |
| A. | Pressure and Young's modules |
| B. | Planck's constant and Angular momentum |
| C. | Impulse and moment of force |
| D. | Force and rate of change of linear momentum |
| Answer» D. Force and rate of change of linear momentum | |
| 1958. |
Stars appears to move from east to west because |
| A. | all stars move from east to west |
| B. | the earth rotates from west to east |
| C. | the earth rotates from east to west |
| D. | the background of the stars moves from west to east |
| Answer» C. the earth rotates from east to west | |
| 1959. |
Let a thin capillary tube be replaced with another tube of insufficient length then, we find water |
| A. | will overflow |
| B. | will not rise |
| C. | depressed |
| D. | change its meniscus |
| Answer» C. depressed | |
| 1960. |
Pa(Pascal) is the unit for |
| A. | thrust |
| B. | pressure |
| C. | frequency |
| D. | conductivity |
| Answer» C. frequency | |
| 1961. |
An aeroplane is flying horizontally with a velocity of 600 km/h and at a height of 1960 m. When it is vertically at a point A on the ground a bomb is released from it. The bomb strikes the ground at point B. The distance AB is |
| A. | 1200 m |
| B. | 0.33 km |
| C. | 3.33 km |
| D. | 33 km |
| Answer» D. 33 km | |
| 1962. |
Intensity of sound has |
| A. | an object existence |
| B. | a subject existence |
| C. | no existence |
| D. | both subjective and objective existence |
| Answer» B. a subject existence | |
| 1963. |
Minimum number of unequal vectors which can give zero resultant are |
| A. | two |
| B. | three |
| C. | four |
| D. | more than four |
| Answer» C. four | |
| 1964. |
Light year is a unit of |
| A. | time |
| B. | distance |
| C. | light |
| D. | intensity of light |
| Answer» C. light | |
| 1965. |
Nuclear sizes are expressed in a unit named |
| A. | Fermi |
| B. | angstrom |
| C. | newton |
| D. | tesla |
| Answer» B. angstrom | |
| 1966. |
Light from the Sun reaches us in nearly |
| A. | 2 minutes |
| B. | 4 minutes |
| C. | 8 minutes |
| D. | 16 minutes |
| Answer» D. 16 minutes | |
| 1967. |
Mirage is due to |
| A. | unequal heating of different parts of the atmosphere |
| B. | magnetic disturbances in the atmosphere |
| C. | depletion of ozone layer in the atmosphere |
| D. | equal heating of different parts of the atmosphere |
| Answer» B. magnetic disturbances in the atmosphere | |
| 1968. |
Point A is at a lower electrical potential than point B. An electron between them on the line joining them will |
| A. | move towards A |
| B. | move towards B |
| C. | move at right angles to the line joining A and B |
| D. | remain at rest |
| Answer» C. move at right angles to the line joining A and B | |
| 1969. |
On a rainy day, small oil films on water show brilliant colours. This is due to |
| A. | dispersion |
| B. | interference |
| C. | diffraction |
| D. | polarization |
| Answer» C. diffraction | |
| 1970. |
RADAR is used for |
| A. | locating submerged submarines |
| B. | receiving a signals in a radio receiver |
| C. | locating geostationary satellites |
| D. | detecting and locating the position of objects such as aeroplanes |
| Answer» E. | |
| 1971. |
Lux is the SI unit of |
| A. | intensity of illumination |
| B. | luminous efficiency |
| C. | luminous flux |
| D. | luminous intensity |
| Answer» B. luminous efficiency | |
| 1972. |
Magnetism at the centre of a bar magnet is |
| A. | minimum |
| B. | maximum |
| C. | zero |
| D. | minimum or maximum |
| Answer» D. minimum or maximum | |
| 1973. |
It is more difficult to walk on a sandy road than on a concrete road because |
| A. | sand is soft and concreter is hard |
| B. | the friction between sand and feet is less than that between concrete and feet |
| C. | the friction between sand and feet is more than that between concrete and feet |
| D. | the sand is grainy but concrete is smooth |
| Answer» C. the friction between sand and feet is more than that between concrete and feet | |
| 1974. |
One thousand microns is equal to |
| A. | 10^-3m |
| B. | 10^-6m |
| C. | 10^-9m |
| D. | 10^-12m |
| Answer» B. 10^-6m | |
| 1975. |
Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'? |
| A. | Rainbow |
| B. | Earthshine |
| C. | Halo |
| D. | Mirage |
| Answer» E. | |
| 1976. |
Sound travels with a different speed in media. In what order does the velocity of sound increase in these media? |
| A. | Water, iron and air |
| B. | Iron, air and water |
| C. | Air, water and iron |
| D. | Iron, water and air |
| Answer» D. Iron, water and air | |
| 1977. |
Moment of inertia is |
| A. | vector |
| B. | scalar |
| C. | phasor |
| D. | tensor |
| Answer» E. | |
| 1978. |
It takes much longer to cook food in the hills than in the plains, because |
| A. | 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 |
| B. | due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil |
| C. | in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere |
| D. | in the hills the humidity is high and therefore a lot of heat is absorbed by the atmosphere leaving very little heat for cooking |
| Answer» B. due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boil | |
| 1979. |
On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because |
| A. | mercury is a metal |
| B. | density of mercury is greater than that of water |
| C. | cohesion of mercury is greater than its adhesion with glass |
| D. | cohesion of water is greater than its adhesion with glass |
| Answer» D. cohesion of water is greater than its adhesion with glass | |
| 1980. |
Stars twinkle because |
| A. | the intensity of light emitted by them changes with time |
| B. | the distance of the stars from the earth changes with time |
| C. | the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time |
| D. | the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere |
| Answer» D. the light from the star is scattered by the dust particles and air molecules in the earth's atmosphere | |
| 1981. |
Sound produced at a point is heard by a person after 5 second, while the same sound is heard by another person after 6 seconds. If the speed of sound is 300 m/s, what could be the maximum and minimum distances between the two persons? |
| A. | 1.8 km, 0.15 km |
| B. | 2.2 km, 0.20 km |
| C. | 2.8 km, 0.25 km |
| D. | 3.3 km, 0.30 km |
| Answer» E. | |
| 1982. |
Mach number is used in connection with the speed of |
| A. | sound |
| B. | aircraft |
| C. | spacecraft |
| D. | ships |
| Answer» C. spacecraft | |
| 1983. |
Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2 |
| A. | 0.14 m/s |
| B. | 140 m/s |
| C. | 1.4 km/s |
| D. | 14 m/s |
| Answer» E. | |
| 1984. |
Stars which appear single to the naked eye but are double when seen through a telescope are |
| A. | novas and supernovas |
| B. | binaries |
| C. | asteroids |
| D. | quasars |
| Answer» C. asteroids | |
| 1985. |
Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I. Diffusion II. RefractionIII. Internal reflection |
| A. | I, II and III |
| B. | I and II |
| C. | II and III |
| D. | I and III |
| Answer» D. I and III | |
| 1986. |
Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit |
| A. | X-rays |
| B. | ultraviolet light |
| C. | visible light |
| D. | radio waves |
| Answer» D. radio waves | |
| 1987. |
Inside an aeroplane, flying at a high altitude, |
| A. | the pressure is the same as that outside |
| B. | normal atmospheric pressure is maintained by the use of air pumps |
| C. | the pressure inside is less than the pressure outside |
| D. | normal humidity and partial vacuum are maintained |
| Answer» C. the pressure inside is less than the pressure outside | |
| 1988. |
Materials for rain-proof coats and tents owe their water-proof properties to |
| A. | surface tension |
| B. | viscosity |
| C. | specific gravity |
| D. | elasticity |
| Answer» B. viscosity | |
| 1989. |
out of the following, which is not emitted by radioactive substance? |
| A. | Electrons |
| B. | Electromagnetic radiations |
| C. | Alpha particles |
| D. | Neutrons |
| Answer» E. | |
| 1990. |
Sound travels at the fastest speed in |
| A. | steel |
| B. | water |
| C. | air |
| D. | vacuum |
| Answer» B. water | |
| 1991. |
It is easier to roll a barrel full of coal tar than to pull it because |
| A. | the full weight of the barrel comes into play when it is pulled |
| B. | the rolling friction is much less than the sliding friction |
| C. | more surface area of the barrel is in contact with the road when it is pulled |
| D. | coal tar is a liquid and it flows in the barrel when it is rolled |
| Answer» C. more surface area of the barrel is in contact with the road when it is pulled | |
| 1992. |
Sir C.V. Raman was awarded Nobel Prize for his work connected with which of the following phenomenon of radiation? |
| A. | Scattering |
| B. | Diffraction |
| C. | Interference |
| D. | Polarization |
| Answer» B. Diffraction | |
| 1993. |
One watt-hour is equivalent to |
| A. | 6.3 x 10^3 J |
| B. | 6.3 x 10^-7 J |
| C. | 3.6 x 10^3 J |
| D. | 3.6 x 10^-3 J |
| Answer» D. 3.6 x 10^-3 J | |
| 1994. |
Suitable impurities are added to a semiconductor depending on its use. This is done in order to |
| A. | increase its life |
| B. | enable it to withstand higher voltages |
| C. | increase its electrical conductivity |
| D. | increase its electrical resistivity |
| Answer» D. increase its electrical resistivity | |
| 1995. |
oil raise up the wick in a lamp. The principle involves |
| A. | the diffusion of oil through the wick |
| B. | the liquid state of oil |
| C. | capillary action phenomenon |
| D. | volatility of oil |
| Answer» D. volatility of oil | |
| 1996. |
On a cold day when a room temperature is 15oC, the metallic cap of a pen becomes much colder than its plastic body, though both are at the same temperature of 15oC, because |
| A. | metals have higher thermal capacity than plastics |
| B. | plastics have a lower density than metals |
| C. | metals are good conductor of heat |
| D. | plastics have a higher thermal conductivity than metals |
| Answer» D. plastics have a higher thermal conductivity than metals | |
| 1997. |
Railway tracks are banked on curves |
| A. | necessary centrifugal force may be obtained from the horizontal component weight of the train |
| B. | to avoid frictional force between the tracks and wheels |
| C. | necessary centripetal force may be obtained from the horizontal component of the weight of the train |
| D. | the train may not fly off in the opposite direction |
| Answer» D. the train may not fly off in the opposite direction | |
| 1998. |
Light travels at the fastest speed in |
| A. | glass |
| B. | water |
| C. | hydrogen |
| D. | vacuum |
| Answer» E. | |
| 1999. |
It is easier to roll a stone up a sloping road than to lift it vertical upwards because |
| A. | work done in rolling is more than in lifting |
| B. | work done in lifting the stone is equal to rolling it |
| C. | work done in both is same but the rate of doing work is less in rolling |
| D. | work done in rolling a stone is less than in lifting it |
| Answer» E. | |
| 2000. |
Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to |
| A. | the heating effect of current alone |
| B. | hysteresis loss alone |
| C. | both the heating effect of current and hysteresis loss |
| D. | intense sunlight at noon |
| Answer» D. intense sunlight at noon | |