G.K. Practice Test: Question Set - 08
1. When light passes from air into glass it experiences change of
- (A) Frequency
and wavelength
- (B) Frequency
and speed
- (C) Wavelength
and speed
- (D) Frequency,
wavelength and speed
2. When a given amount of air is cooled
- (A) The amount
of moisture it can hold decreases
- (B) Its
absolute humidity decreases
- (C) Its
relative humidity remains constant
- (D) Its
absolute humidity increases
3. When cream is separated from milk
- (A) The
density of milk increases
- (B) The density
of milk decreases
- (C) The
density of milk remains unchanged
- (D) It
becomes more viscous
4. Weight of an object put in a satellite orbiting in space around the earth is
- (A) The
same as on the earth
- (B) Slightly
more than that on the earth
- (C) Less than
that on the earth
- (D) Reduced to
zero
5. The three abundant elements in the earth's crust are aluminium, oxygen and silicon. The correct order of their abundance is
- (A) Oxygen,
aluminium, silicon
- (B) Aluminium,
silicon, oxygen
- (C) Oxygen,
silicon, aluminium
- (D) Silicon,
oxygen, aluminium
6. Out of the following, which is not emitted by radioactive substance?
- (A) Electrons
- (B) Electromagnetic
radiations
- (C) Alpha
particles
- (D) Neutrons
7. Materials for rain-proof coats and tents owe their water-proof properties to
- (A) Surface
tension
- (B) Viscosity
- (C) Specific
gravity
- (D) Elasticity
8. Pick out the scalar quantity
- (A) Force
- (B) Pressure
- (C) Velocity
- (D) Acceleration
9. Of the following natural phenomena, tell which one known in Sanskrit as 'deer's thirst'?
- (A) Rainbow
- (B) Earthshine
- (C) Halo
- (D) Mirage
10. On a cold day when a 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
- (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
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