1. A certain amount of cold air will weigh heavier
than the same amount of dry air because of the:
A. greater number of
molecules at low temperature
B. lesser number of molecules at high temperature
C. greater energy of molecules at high temperature
D. lesser energy of molecules at high temperature
2. A
free-floating astronaut ‘A’ pushes another free-floating astronaut ‘B’ in
space. The mass of ‘A’ is greater than that of ‘B’. The force exerted by
astronaut ‘A’ on astronaut ‘B’ will be:
A.
equal to zero
B. equal to the force exerted by ‘B’ on ‘A’
C. greater than the force exerted by ‘B’ on ‘A’
D. less than the force exerted by ‘B’ on ‘A’
3. On
the lunar surface:
A.
weight remains same but mass varies
B.
mass remains same but weight varies
C. both of them vary
D. None of the above is true
4. The
effect of circular movements on a person in a satellite around the earth is
that:
A.
his mass becomes nil while the weight remains the same
B.
his mass remains constant while weight becomes zero
C. his mass goes up while the weight remains
unchanged
D. None of the above
5. A
wooden block is floating in water. If 4/5 of its volume is immersed in water
and volume of the water displaced is 800ml, the volume of the block is:
A. 1140 ml
B. 200 ml
C. 800 ml
D.
100 ml
6. A
balloon filled with air is weighted (W) so that it just floats in water. When
it is further pushed a short distance in water it will:
A. sink to the bottom
B. stay at the depth where it stands submerged
C. not come back to its original position
D.
sink down a little further but will not reach the bottom
7. Oil, water and gas can be present in a well in
the ascending order of:
A. water, oil, gas
B. gas, water, oil
C. water, gas, oil
D. oil, water, gas
8. Mercury is preferred to water in barometer
because:
A.
mercury is good conductor of heat
B. mercury is bright and hence its level can be
easily read
C. mercury is available in pure form
D.
mercury has high density and low surface tension
9. An airplane rises up:
A. on account of upward
thrust of air
B. as the air over the airplane is denser than
that under the plane
C. as the pressure over its wings is more than the
pressure under them
D. as its nose is pointed upwards
0. A boat filed with some stones is floating in
water. If the stones are dropped into the water, the level of the water will:
A.
rise
B.
decrease
C. remain the same
D. insufficient data to predict
11. When a ship enters sea from a river, its
level:
A.
remains same
B. rises
C.
may or may not change
D. decreases
12. There is a hole in the boat through which
water is seeping into the boat. Just before the boat capsizes :
A. water level in the
boat will increase
B. water level will decrease
C. water level will remain constant
D. None of these
13. An ice cube is floating in a glass of water.
How will the water level be affected when the ice cube melts?
A.
The level of water will go up
B. The level of water will go down
C.
The level of water will remain unchanged
D. In the beginning the level will go up but later
on the level will go down
14. Fathom is the unit of:
A.
sound
B.
depth
C. distance
D. frequency
15. Ordinary clocks lose time during summer. It is
so because the length of their pendulum:
A. increases and so does
the length of time
B. increases and therefore its duration of time
decreases
C. decreases and therefore the length of time
increases
D. decreases and therefore the length of time
decreases
16. A body is attached to a spring balance
suspended from a stand. The reading on the balance is 0.5 kg. The two together
are detached from the stand and allowed to fall through a height. While falling
the reading in the balance will be:
A. zero
B. less than 0.5kg but not zero
C. more than 0.5 kg depending on the height
D. 0.5 kg
17. Two bars of gold and silver are weighed by
spring balance and read 200 gms each. These bars are then suspended in a liquid
and weighed by using the same balance. What could be derived?
A.
Gold will weigh more than silver
B. Silver will weigh more than gold
C. Both the bars will be equal in weight
D. Nothing can be said, unless the density of the
liquid is known
18. Which one of the following will take place
when a watch based on oscillating spring is taken to a deep mine?
A.
It will become slow
B. It will become fast
C. It will indicate the same time as on earth
D. It will stop working
19.
Very small-time intervals are accurately measured by the:
A.
pulsars
B. while dwarfs
C.
atomic clocks
D. quartz clocks
20. Match the following:
List
I
List II
a.
Cusec
1. Pressure
b.
Byte
2. Intensity of Earthquake
c.
Ricter
3. Rate of Flow
d.
Bar
4. Computer Memory
A. a4, b1, c2, d3
B. a2, b4, c3, d1
C.
a3, b4, c2, d1
D. a3, b2, c1, d4