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Polymers
Question
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Which of the following organic compounds polymerises to form the polyester dacron?

  • Propylene and para HO-(C6H4)-OH

  • Benzoic acid and ethanol

  • Terephthalic acid and ethylene glycol

  • Benzoic acid and para HO-(C6H4)-OH

Answer

C.

Terephthalic acid and ethylene glycol

Dacron, commonly known as terylene, is obtained by heating a mixture of terephthalic acid and ethylene glycol at 420-460 K in the presence of zinc acetate and antimony trioxide as a catalyst.

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