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Coatings used on raincoat are waterproof...

Coatings used on raincoat are waterproof because they

A

increases angle of contact

B

decreases angle of contact

C

does not alters angle of contact

D

forms a smooth surface

Text Solution

Verified by Experts

The correct Answer is:
A
Water proof surface coatings are made up of materials which increases angle of contact and water does not wets the surface.
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DC PANDEY ENGLISH-FLUID MECHANICS-Taking it together
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  11. In a streamline flow

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  13. Which of the following diagrams does not represent a streamline flow ?

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  18. The correct curve between the height or depression h of liquid in a ca...

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