Question

Which of the following is not a homopolymer?

• A. Butyl rubber
• B. Neoprene
• C. Natural rubber
• D. Nitrile rubber

Answer 1

Answer: (A), (D)

The correct options are
A Butyl rubber
D Nitrile rubber

A homopolymer plastic is one that is produced by the polymerization of a single monomer.

Butyl rubber, sometimes just called "butyl", is a synthetic rubber, a copolymer of isobutylene with isoprene.

Neoprene is a homopolymer of chlorobutadiene.

Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene).

Nitrile rubber, also known as Buna-N, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene.

Thus Butyl rubber and nitrile rubber are not homopolymers

Options A and D are correct.