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Surface tension of all lubricating oils ...

Surface tension of all lubricating oils and paints is kept low. Why?

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In order to have low value of surface tension so that it can spread over large area.
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PRADEEP-PROPERTIES OF BULK MATTER-Very short answer questions
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  12. what is the effect of impurities on the surface tension of liquid.

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  13. When wax is rubbed on cloth becomes water proof, why?

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  14. what is the effect of solute on the surface tension of liquid?

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  15. Water can rise up to a height of 10 cm in a capillary tube. If a capil...

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  16. A liquid of density rho and surface tension S rises to a height h in a...

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  17. Put a piece of chalk into water. The chalk will emit bubbles in all di...

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  18. How is the rise of liquid affected if top of the capillary is closed?

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  19. Why the tip of the nib of a pen is split?

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  20. What is the importance of wetting agents used by dyers?

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