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Class 9
Chemistry :-NCERT Solution - Matter In Our Surroundings

Page No 10:
Question 5:
What type of clothes should we wear in summers?


Answer:

We should wear cotton clothes in summers. During summers, we sweat more. On the other hand, cotton is a good absorber of water. Thus, it absorbs sweat from our body and exposes the liquid to the atmosphere, making evaporation faster. During this evaporation, particles on the surface of the liquid gain energy from our body surface, making the body cool.