Give Reasons for the Following:

Why should we wear cotton clothes in summer?

We perspire more in summer. Sweat present in the surface of our body absorbs the energy equal to the latent heat of vapourisation and gets converted to vapour. This gives a cooling effect to our body. This is called evaporative cooling. Cotton is a good absorber of water. Hence, cotton clothes absorb the sweat and expose it to the surroundings for easy evaporation.