1.
How do the centripetal forces pull a body?
A.
Upward
B. Downward
C. Inwards
D. Outwards
B. Downward
C. Inwards
D. Outwards
2. When milk is churned, the cream separates from
it due to the:
A.
cohesive force
B. frictional force
C. centrifugal force
D. gravitational force
3. A body in circular motion requires:
B. frictional force
C. centrifugal force
D. gravitational force
3. A body in circular motion requires:
A.
centrifugal force
B. centripetal force
C. inertial force
D. gravitational force
4. The rising of ink to the point of nib in a fountain pen is due to:
B. centripetal force
C. inertial force
D. gravitational force
4. The rising of ink to the point of nib in a fountain pen is due to:
A.
surface tension
B. capillary action
C. gravitational attraction
D. None of the above
5. As one goes up the mountain one suffers from nose bleeding sometimes. The reason is that
B. capillary action
C. gravitational attraction
D. None of the above
5. As one goes up the mountain one suffers from nose bleeding sometimes. The reason is that
A.
blood pressure decreases at high altitudes
B. blood pressure increases at high altitudes
C. as one starts going up, the pressure of the blood capillaries becomes higher than the outside pressure
D. None of the above
6. Birds get thrust (forward motion) and lift (upward motion) from:
B. blood pressure increases at high altitudes
C. as one starts going up, the pressure of the blood capillaries becomes higher than the outside pressure
D. None of the above
6. Birds get thrust (forward motion) and lift (upward motion) from:
A. flapping of wings
B. twisting of feathers
C. shape of wings which is similar to airplane blades
D. air sacs
7. Small rain-drops are spherical in shape because of:
B. twisting of feathers
C. shape of wings which is similar to airplane blades
D. air sacs
7. Small rain-drops are spherical in shape because of:
A. surface-tension
B. gravity
C. atmospheric pressure
D. evaporation
8. The cross-section of the water column in the given figure is circular. The diameter of the bigger limb is 4 cm and that of the smaller limb 2 cm. A force of 40kg is placed at the bigger end. What force will be required at the smaller end to keep the level of water balanced?
A. 20 kg
B. 80 kg
C. 160 kg
D. 10 kg
B. gravity
C. atmospheric pressure
D. evaporation
8. The cross-section of the water column in the given figure is circular. The diameter of the bigger limb is 4 cm and that of the smaller limb 2 cm. A force of 40kg is placed at the bigger end. What force will be required at the smaller end to keep the level of water balanced?
A. 20 kg
B. 80 kg
C. 160 kg
D. 10 kg
9. A body partially floats in water when:
A.
the volume of the displaced water is greater than the volume of the body
B. a body immersed in fluid loses as much in weight as the weight of the displaced volume of the fluid
C. the mass of the displaced water is greater than the mass of the body
D. None of the above
10. Which of the following is used in diesel engine?
1. Cylinder
2. Spark plug
3. Piston
Choose your answer from the codes given below :
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. 1 and 3
11. Iron is heavier than water, still the ship floats on the sea because
B. a body immersed in fluid loses as much in weight as the weight of the displaced volume of the fluid
C. the mass of the displaced water is greater than the mass of the body
D. None of the above
10. Which of the following is used in diesel engine?
1. Cylinder
2. Spark plug
3. Piston
Choose your answer from the codes given below :
A. 1, 2 and 3
B. 1 and 2
C. 2 and 3
D. 1 and 3
11. Iron is heavier than water, still the ship floats on the sea because
A.
weight of the ship is less than the weight of water in the sea
B. weight of the ship is more than sea water
C. weight of the ship is less than the weight of water that the ship displaces
D. weight of ship is equal to the weight of water that ship displaces
12. The volume of an object will be maximum when it is:
B. weight of the ship is more than sea water
C. weight of the ship is less than the weight of water that the ship displaces
D. weight of ship is equal to the weight of water that ship displaces
12. The volume of an object will be maximum when it is:
A. spherical
B. rectangular
C. cone shaped
D. triangular
13. The mass of the body is different from its weight because:
B. rectangular
C. cone shaped
D. triangular
13. The mass of the body is different from its weight because:
A.
mass is variable quantity whereas weight is constant
B. mass is constant but weight increases as the body moves from the poles to the Equator
C. mass varies very little at different places where as weight varies a lot
D. mass is a measure of the quantity of matter where as weight is a force
14. Which one of the following is a vector quantity?
B. mass is constant but weight increases as the body moves from the poles to the Equator
C. mass varies very little at different places where as weight varies a lot
D. mass is a measure of the quantity of matter where as weight is a force
14. Which one of the following is a vector quantity?
A.
volume
B. mass
C. weight
D. density
15. The weight of a body at the centre of the earth is:
A. increasedB. mass
C. weight
D. density
15. The weight of a body at the centre of the earth is:
B. neutralized
C. decreased
D. the same
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