Which of the following is a thermal insulator? 2 points A) Iron B) Brass C) Plastic D) Aluminium.
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Conductor :- Silver , Copper , Aluminium , Nichrome , Graphite , Mercury , Manganin.
Insulator :- Sulphur , Cotton , Air , Paper , Porcelain , Mica , Bakelite , Polythene.
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