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Home » General Knowledge » Aptitude Test - 53
Hassan
1.. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'
A. Rainbow
B. Earthshine
C. Halo
D. Rainbow
2.. 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 pump
C. the pressure inside is less than the pressure outside
D. the pressure is the same as that outside
3.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. Water, iron and air
4.. One thousand microns is equal to
A. 10-3m
B. 10-6m
C. 10-9m
D. 10-3m
5.Sound travels at the fastest speed in
A. steel
B. water
C. air
D. steel
6.oil raise up the wick in a lamp. The principle involves
A. the diffusion of oil through the wick
B. the liquid state of oi
C. capillary action phenomenon
D. the diffusion of oil through the wick
7.. Superconductors are substances which
A. conduct electricity at low temperature
B. offer high resistance to the flow of current
C. offer no resistance to the flow of electricity
D. conduct electricity at low temperature
8. Light travels at the fastest speed in
A. glass
B. water
C. Hydrogen
D. glass
9.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. necessary centrifugal force may be obtained from the horizontal component weight of the train
10.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. metals have higher thermal capacity than plastics
11.Intensity of sound at a point is ____ its distance from the source.
A. directly proportional to
B. inversely proportional to
C. directly proportional to square of
D. directly proportional to
12.Of the four locations mentioned below the highest inside temperature will be attained in the pressure cooker operated with the pressure valve open
A. at sea level
B. at the top of Mt. Everest
C. at a place in a valley below sea level
D. at sea level
13.Radio telescopes are better than optical telescopes because
A. they can detect faint galaxies which no optical telescope can
B. they can work even in cloudy conditions
C. they can work during the day and night
D. they can detect faint galaxies which no optical telescope can
14. Light Emitting Diodes (LED) is used in fancy electronic devices such as toys emit
A. X-rays
B. ultraviolet light
C. visible light
D. X-rays
15.Out of the following pairs, which one does not have identical dimension?
A. Moment of inertia and moment of a force
B. Work and Torque
C. Angular momentum and Planck's constant
D. Moment of inertia and moment of a force
16. Mercury is commonly used as a thermometric fluid rather than water because
A. specific heat of mercury is less than water
B. specific heat of mercury is more than water
C. mercury has greater visibility than water
D. specific heat of mercury is less than water
17.Optical fibre works on the
A. principle of refraction
B. total internal reflection
C. scattering
D. principle of refraction
18.Light from the star, Alpha Centauri, which is nearest to the earth after the sun, reaches the earth in
A. 4.2 seconds
B. 42 seconds
C. 4.2 years
D. 4.2 seconds
19.Supersonic plane fly with the speed
A. less than the speed of sound
B. of sound
C. greater than the speed of sound
D. less than the speed of sound
20.Mach number is used in connection with the speed of
A. sound
B. aircraft
C. spacecraft
D. sound
21.On a stationary sail boat, air is blown from a fan attached to the boat. The boat
A. moves in opposite direction in which the air is blown
B. does not move
C. moves in the same direction in which air blows
D. moves in opposite direction in which the air is blown
22.. Rainbow is due to
A. absorption of sunlight in minute water droplets
B. diffusion of sunlight through water droplets
C. ionisation of water deposits
D. absorption of sunlight in minute water droplets
23.Stars which appear single to the naked eye but are double when seen through a telescope are
A. novas and supernovas
B. binaries
C. asteroid
D. novas and supernovas
24.ML2T-2 is the dimensional formula for
A. moment of inertia
B. pressure
C. elasticity
D. moment of inertia
25. Solar eclipse will take place when
A. the sun is between the moon and the earth
B. the earth is between the moon and the sun
C. the moon is between the sun and the earth
D. the sun is between the moon and the earth
26.Isotopes of an element contain
A. the same number of protons but different number of neutrons
B. the same number of neutrons but different number of protons
C. equal number of protons and electrons
D. the same number of protons but different number of neutrons
27. One watt-hour is equivalent to
A. 6.3 x 103 J
B. 6.3 x 10-7 J
C. 3.6 x 103
D. 6.3 x 103 J
28.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. Interferenc
D. Scattering
29.In which of the following industries is mica as a raw material?
A. Cement
B. Glass and Pottery
C. Iron and Steel
D. Cement
30. Radiocarbon dating technique is used to estimate the age o
A. rocks
B. monuments
C. soil
D. rocks
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