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  1. Rate of doing work is called

  2. A.

     Capacity

    B.

     Energy

    C.

     Power

    D.

     Current

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  3. The energy associated with motion is called

  4. A.

     Potential energy

    B.

     Kinetic energy

    C.

     Both A & B

    D.

     None of the above

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  5. The boiling point of water decreases at higher altitudes is due to

  6. A.

     Low temperature

    B.

     Low atmospheric pressure

    C.

     High temprature

    D.

     High atmospheric pressure

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  7. At boiling point of liquids, its

  8. A.

     Temperature increases

    B.

     Atmospheric pressure increases

    C.

     Temperature remains constant

    D.

     Vapour pressure decreases

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  9. Contact force is another name for ________

  10. A.

     Friction

    B.

     Magnetic force

    C.

     Electrostatic force

    D.

     Muscular force

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  11. The rotational effect of a force on a body about an axis of rotation is described in terms of

  12. A.

     Centre of gravity

    B.

     Centripetal force

    C.

     Centrifugal force

    D.

     Moment of force

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  13. At hill stations, the boiling point of water will be

  14. A.

     Same as at sea level

    B.

     Less than that at sea level

    C.

     More than that at sea level

    D.

     Equal to the melting point of ice

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  15. Instrument used to measure the force and velocity of the wind is

  16. A.

     Ammeter

    B.

     Anemometer

    C.

     Altimeter

    D.

     Audiometer

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  17. When pressure is increased the melting point of ice

  18. A.

     Increases

    B.

     Does not change

    C.

     Decreases

    D.

     Depends on the impurities in the ice

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  19. The wall of a dam is made thicker at the bottom than at the top because the pressure exerted by the water on the wall

  20. A.

     Depends on the thickness of the wall

    B.

     Increases with height of the wall

    C.

     Increases with depth of the wall

    D.

     Depends on the area of the wall

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