JEE Main · 2022 · 24 Jun 2022 · Shift 1 · Polymers

Which of the following is an example of polyester?

(A)Butadiene-styrene copolymer
(B)Melamine polymer
(C)Neoprene
(D)Poly-β-hydroxybutyrate-co-β-hydroxy valerate✓ Correct

Answer: (D)

Solution

A polyester is a polymer containing ester linkages (-COO-) in its backbone. Poly-β-hydroxybutyrate-co-β-hydroxy valerate (PHBV) is a biodegradable polyester formed from hydroxy acids. The other options are: butadiene-styrene copolymer (elastomer), melamine polymer (thermosetting plastic with C-N bonds), and neoprene (synthetic rubber). Only option D is a polyester.

JEE Main · 2022 · 24 Jun 2022 · Shift 1 · Single correct option

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