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Question

Non-metals are usually poor conductors of heat and electricity. They are non-lustrous, non-sonorous, non-malleable and are coloured.

The allotropic form of a non-metal, which is a good conductor of electricity is:

A
Graphite
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B
Diamond
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C
Rhombic sulphur
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D
None of these
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Solution

The correct option is A Graphite
Graphite, which is an allotrope of carbon, is a good conductor of electricity due to presence of free electrons.

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