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Perspiration cools the body because...

Perspiration cools the body because

A

presence of water on the skin is cooling.

B

evaporation requires latent heat

C

water has a high specific heat

D

water is a poor conductor of heat.

Text Solution

Verified by Experts

The correct Answer is:
B
This is because when we sweat, the liquid (sweat) present on our body takes the heat equivalent to the latent heat of vaporisation from our body and therefore we feel cool.
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