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  1. Which of the following is a result of Surface tension ?

  2. A.

     Gravitational pull

    B.

     Viscosity

    C.

     Capillary action

    D.

     Radiation

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  3. A liquid disturbed by stirring comes to rest due to

  4. A.

     Density

    B.

     Surface tension

    C.

     Viscosity

    D.

     Centripetal force

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  5. A capillary tube is partially dipped vertically in a vessel containing water. Due to capillarity water rises in the tube. The height of water rise in the tube can be increased by

  6. A.

     Decreasing the radius of the capillary tube

    B.

     Increasing the radius of the capillary tube

    C.

     Increasing the height of water in the vessel

    D.

     None of these

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  7. Oil rises up the wick in a lamp because

  8. A.

     Oil is very light

    B.

     Of the diffusion of oil through the wick

    C.

     Of the surface tension phenomenon

    D.

     Of the capillary action phenomenon

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  9. An ice block with a piece of lead embeded in it floats in water. If ice melts the water level

  10. A.

     Rises

    B.

     Falls

    C.

     Remains same

    D.

     Falls first and then rises

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  11. The surface tension of water on adding detergent to it

  12. A.

     Increases

    B.

     Decreases

    C.

     No change

    D.

     Becomes zero

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  13. A bottle of sodalime is grasped by the neck and swung briskly in a vertical circle, Near which portion of the bottle do the bubbles collect?

  14. A.

     Near the bottom

    B.

     In the middle of the bottom

    C.

     Near the neck

    D.

     Bubbles remain distributed uniformly

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  15. Which liquid is the most viscous?

  16. A.

     Water

    B.

     Diesel

    C.

     Milk

    D.

     Oil

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  17. Rain drops acquire spherical shape due to

  18. A.

     Viscosity

    B.

     Surface tension

    C.

     Friction

    D.

     Elasticity

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  19. The fact that two large ships travelling on close parallel courses in the same direction tend to move towards each other can be explained by

  20. A.

     Bernoulli's principle

    B.

     Magnetic properties of the ship's material

    C.

     Newton's third law of motion

    D.

     Earth's gravitational force

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