Wool is ___.

lustrous in appearence

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made of cellulose

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a conductor of heat

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an insulator of heat

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Solution

The correct option is D an insulator of heat
Wool contains a lot of air trapped between its fibres. This trapped air does not allow heat to pass from our body into the surrounding thereby keeping the person wearing it warm. Hence, it is an insulator of heat and we can wear woolen clothes in winter.

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