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प्रश्न
Electrical wires have a coating of an insulting material. The material, generally used is
विकल्प
Sulphur
Graphite
PVC
All can be used
MCQ
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उत्तर
PVC
Explanation -
Polyvinyl chloride is a synthetic plastic polymer which is a bad conductor of electricity and thus used as an insulating coating material for metallic wires.
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