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Woollen cloth protects the body from cold because

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Physics
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Woollen cloth protects the body from cold because

Answer & Solution
Correct Answer: Option B
Cotton clothes are thin and do not have space in which air can be trapped. Thus, cotton clothes do not prevent heat coming out of our body. Woollen clothes keep us warm during winter because wool is a poor conductor of heat and it has air trapped in between the fibres.
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