Which of the following group contains all synthetic substances
a) Nylon, Terylene, Wool (b) PVC, Polythene , Bakelite
(c) Cotton, Polycot, Rayon (d) acrylic, Silk, Wool
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20
Answer:
(b) PVC, Polythene , Bakelite
Explanation:
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Answer:
b. PVC, Polythene, Bakelite.
Explanation:
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