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Question

Which of the following materials is an electrical conductor?

A
Silver
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B
Silver-coloured plastic
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C
Cork
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D
Rubber
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Solution

The correct option is D Silver
As we know that generally, metals are conductors and non-metals are insulators. That is, metals conduct electricity much more than non-metal.
Silver is the only metal present in the list, so it is the only electrical conductor.
All others are non-metals.

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