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Explain why a small piece of soap fixed ...

Explain why a small piece of soap fixed to the back of a card board that is floating on water will cause it to move over the water surface.

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MBD PUBLICATION-MECHANICAL PROPERTIES OF FLUID (LIQUID AT REST)-QUESTION BANK
  1. Distinguish between cohesion and adhesion.

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  2. Distinguish between surface tension and surface energy.

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  3. Explain why a small piece of soap fixed to the back of a card board th...

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  4. A water drop has a diameter of 2 xx 10^-5m. Calculate the excess press...

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  5. What is the nature of inter-molecular forces at short distance and at ...

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  6. Explain why water spreads but not the mercury on clean glass plate.

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  7. explain what is meant by surface energy of a liquid. Show that surface...

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  8. What will be the rise of water when a capillary tube of radius 0.5mm i...

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  9. Distinguish between cohesion and adhesive forces.

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  10. Why does water spread over and wet a glass ?

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  11. Distinguish between surface tension and surface energy.

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  12. Calculate the excess pressure between inside and outside of soap bubbl...

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  13. Free surface of a liquid behaves like a stretched membrane. Explain br...

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  14. Explain what happens to the energy used to blow a soap bubble ?

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  15. Why a needle may float on clear water but sink when some detergent is ...

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  16. Explain why water wets glass.

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  17. The radius of soap bubble is increased to double its initial size. Cal...

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  18. Show graphically the nature of intermolecular forces when the distance...

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  19. If the radius of capillary tube is doubled, what changes will take pla...

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  20. Explain why the shape of a small mercury drop is spherical.

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