JEE Main 2022 · 24 Jun · Shift 1 · Chemistry Q77

ChemistrySingle correct+4 / -1Question 77 of 90

Which of the following is an example of polyester ?

Butadiene-styrene copolymer

Melamine polymer

Neoprene

Poly-

\beta

-hydroxybutyrate-co-

\beta

-hydroxyvalerate

Answer and worked solution

Official answer: D

Polyester means monomers joined by ester links.

Butadiene-styrene and neoprene are addition polymers of alkenes/dienes.
Melamine-formaldehyde is a condensation polymer with no ester links.
PHBV, from 3-hydroxybutanoic and 3-hydroxypentanoic acids, is a biodegradable polyester.

(D)

Topics:Common polymers

JEE Main 2022 · 24 Jun · Shift 1, Chemistry question 77