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  1. Which of the following is not a property of heavy water ?

  2. A.

     Boiling point of heavy water is lower than that or ordinary water

    B.

     Density of heavy water is higher than that of ordinary water

    C.

     Freezing point of heavy water is higher than that of ordinary water

    D.

     It produces corrosion

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  3. Which of the following liquids is most viscous?

  4. A.

     Oil

    B.

     Milk

    C.

     Water

    D.

     Petrol

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  5. Small bubbles are perfectly spherical because of

  6. A.

     Gravity

    B.

     Pressure

    C.

     Viscosity

    D.

     Surface tension

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  7. Pitot tube is used to measure

  8. A.

     Static pressure

    B.

     Velocity at stagnation point

    C.

     Stagnation pressure

    D.

     Dynamic pressure

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  9. A spherical ball made of steel when dropped in mercury container

  10. A.

     Sink in mercury

    B.

     Will be on the surface of mercury

    C.

     Will be partly immersed mercury

    D.

     Will dissolve in mercury

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  11. If cream is removed from milk, its density

  12. A.

     Increases

    B.

     Decreases

    C.

     Remains the same

    D.

     May increase or decrease

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  13. A falling drop of rain water acquires the spherical shape due to

  14. A.

     Viscosity

    B.

     Surface Tension

    C.

     Atmospheric pressure

    D.

     Gravitational force

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  15. Why the needle of iron swims on water surface when it is kept gently ?

  16. A.

     It will remain under the water, when it will displace more water than its weight

    B.

     The density of needle is less than that of water

    C.

     Due to surface tension

    D.

     Due to its shape

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  17. Rise of oil a wick is due to

  18. A.

     Density of the oil

    B.

     Viscosity of the oil

    C.

     Surface tension of the oil

    D.

     Pressure of the oil

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  19. Bubbles of air rise up through liquids due to

  20. A.

     Surface tension and adherence

    B.

     Viscosity and buoyancy

    C.

     Air current over the liquid and buoyancy

    D.

     Up thrust and surface tension

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