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"Oil rises in lamp wick". Why?...

"Oil rises in lamp wick". Why?

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ICSE-PROPERTIES OF MATTER-MODULE 2(SURFACE TENSIONS)SHORT ANWER QUESTIONS
  1. Distinguish between cohesive and adhesive forces.

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  2. Explain the terms (i) molecular range (ii) sphere of influence.

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  3. Define surface tension and surface energy. How are they related?

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  4. Which of the following statements is not true about angle of contact ?

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  5. What are water proofing agents?

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  6. "The shape of water meniscus is concave, whereas the shape of mercury ...

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  7. Why there is an excess pressure on the concave side of a liquid surfac...

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  8. Draw labelled diagram to show contact between (i) water and glass (ii)...

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  9. "Oil rises in lamp wick". Why?

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  10. "Water stick to the walls of a glass tube, but mercury does not." Why?

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  11. If the capillary tube is dipped in water is of insufficient length (l...

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  12. If a capillary tube in dipped in a state of weightlessness how will th...

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  13. "Tenis are coated with a thin layer of aluminium hydroxide." Why?

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  14. Is it possible for water to have an angle of contact as high as 160^(@...

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  15. What are surfactants?

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  16. "Camphor particles do not dance about in water contaminated with oil."...

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  17. "On cold water oil spreads, but on hot water it remains in the form of...

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  18. What are the characteristics of detergent solution?

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  19. Name the factors affecting the surface tension of a liquid.

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  20. Give practical application of spreading of liquid over solid. [ Hint...

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