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Metallic and electrolytic conduction - class-XII
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Which of the following is an insulator?
AnswerClick to flip back
A
Wood
💡 Explanation:
Insulators donot conduct electricity due to the absence of ions or electrons.
Iron is metal therefore has pool of electrons on the surface and is a conductor.
Graphite has extensive $\pi$ electron cloud and is thus a conductor.
Silver is a metal and is a very good conductor of electricity.
Wood is made of organic molecule, thus its an insulator.
Option A is correct