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physics 05 surface tension
Pg.No.
1
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Page 1
Q.1. Name the force of attraction between the molecules of same substance?
Q.2. Why solids have a fixed shape?
Q.3. Name the force of attraction between the molecules of different substances?
Q.4. Why a body sticks to another?
Q.5. By virtue of which property of a liquid,it has tendency to minimise its surface area?
Q.6. How temperature effects surface tension of a liquid?
Q.7. Write the S.I. unit of surface tension?
Q.8. At what temperature the surface tension of a liquid becomes zero?
Q.9. Which liquid has more surface tension either clean water or soap solution?
Q.10. Formation of lead shots,spraying result in coldness,flotation of needle on water, dancing of camphor on water all are based on?
Q.11. Rain drops form spherical shape due to?
Q.12. Why excess of mosquitoes floating on water surface die due to sinking when kerosene oil is sprinkled on water?
Q.13. Name the phenomenon of rise or depression of liquids in a capillary tube?
Q.14. Why piece of blotting paper soaks ink?
Q.15. Why the oil in the wick of lamp rises?
Q.16. By which phenomenon the root hairs of plants draws water from the soil?
Q.17. When a glass capillary tube is dipped in water,water rises and shape of water meniscus is?
Q.18. When a glass capillary tube is dipped in mercury,water rises and shape of water meniscus is?
Q.19. Why the soil is loosened and split into pieces by the farmers?
Q.20. Why towel soaks water from the body?
Q.21. Why addition of detergent or soap increases the cleaning abilility of water?
Q.22. Why bubbles of soap solution are big?
Q.23. Why warm soup is tasty?
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