Question

Electrical wires have a coating of an insulting material. The material, generally used is
(a) Sulphur
(b) Graphite
(c) PVC
(d) All can be used

NCERT Class X
Science - Exemplar Problems

Chapter_Metals and Non Metals

Answer 1

pvc is generally used because it is a insulator

Answer 2

pvc  (c)

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