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Subject :NSO    Class : Class 8

Which of the following applications of plastics show(s) that plastics are bad conductors of electricity?
I. Refrigerators have an insulating wool of plastics.
II. Electric wires have a plastic coating.
III. Chemicals are stored in plastic containers.
IV. Parachutes are made from plastics.

A II, III and IV only
B III and IV only
C I only
D II only

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