Question:

Which of the following is an insulator?

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Diamond is a strong insulator due to its structure and lack of free electrons.
Updated On: Apr 25, 2025
  • Graphite
  • Aluminium
  • Diamond
  • Silicon
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The Correct Option is C

Solution and Explanation

Diamond is a non-metal and an excellent electrical insulator because it does not have free electrons for conduction. Graphite, on the other hand, is a good conductor.
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