Multiple choice

Why should cotton clothes be worn in summers?

  1. Cotton clothes are lighter, so we feel comfortable in summer.

  2. Cotton clothes do not allow heat radiation to pass through them.

  3. Cotton absorbs sweat and exposes it to the atmosphere for evaporation, which keeps our body cool.

  4. Cotton allows the air to pass through it and keeps our bodies cool.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

During summers, we perspire more because of the mechanism of our body which keeps us cool. Cotton, being a good absorber of water, helps in absorbing sweat and exposing it to the atmosphere so that particles of sweat gain energy equal to latent heat of vapourisation from the surroundings and evaporate, leaving the body cool.

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