Multiple choice

Why is it preferred to wear woollen clothes during winter?

  1. Because wool is a poor conductor of heat.

  2. Because wool is a good conductor of heat.

  3. Because it allows the sweat to evaporate.

  4. Because no air gets trapped in between the wool fibres.
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A Correct answer
Explanation

During winter, we use woollen clothes because woolen clothes have large spaces in between them which takes in a large amount of air, as air is a bad conductor of heat, it doesn't allow the body heat to evaporate and hence we feel warm in woollen clothes.  

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