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Perspiration cools the body because

Options

  1. Apresence of water on the skin is cooling
  2. Bevaporation requires latent heat
  3. Cwater has a high specific heat
  4. Dwater is a poor conductor of heat

Correct answer

B. evaporation requires latent heat

Step-by-step solution

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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