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Q. Terylene is NOT a

KCETKCET 2014Polymers

Solution:

Terylene is a copolymer of terephthalic acid and ethylene glycol. It is a polyester fibre.

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Since, it is a product of condensation polymerisation, in which molecular mass of polymer is not a whole number of monomer (due to loss of $H _{2} O$ molecules), so it is also called step growth polymer.