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Q.

Wool is a poor conductor of electricity. How does this property of wool help in keeping us warmer in winter?

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a

It lets air be distributed to the surroundings.

b

Wool let the air in through the fibres.

c

The woollen fibres trap the air in between them.

d

The woollen fibres would not let air near it.

answer is C.

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Detailed Solution

Wool helps in keeping us warmer in winter. This is because it is a poor conductor of electricity and it has air trapped in between the fibres.

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