JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Polymers

Which one of the following is NOT a copolymer?

(A)Buna-S
(B)Neoprene✓ Correct
(C)PHBV
(D)Butadiene-styrene

Answer: (B)

Solution

A copolymer is formed from two or more different monomers. Buna-S is a copolymer of 1,3-butadiene and styrene. PHBV (poly-3-hydroxybutyrate-co-3-hydroxyvalerate) is a copolymer of 3-hydroxybutyric acid and 3-hydroxypentanoic acid. Butadiene-styrene is also a copolymer. Neoprene, however, is a homopolymer formed from the polymerization of a single monomer, chloroprene (2-chloro-1,3-butadiene).

JEE Main · 2022 · 28 Jun 2022 · Shift 1 · Single correct option

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