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Question

Which among the following is not an insulator?

A
Glass
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B
Silver
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C
Wood
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D
Cotton
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Solution

The correct option is B Silver
The materials which do not allow heat to pass through them easily are called insulators. Here wood, glass and cotton are insulators, which do not allow heat to pass through them but silver is a metal. Metals usually are good conductors of heat. The materials which allow heat to pass through them easily are conductors of heat

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