Question

Which of the following monomers is used in manufacture of Neoprene rubber?

• A. 1,3-Butadien
• B. Styrene
• C. 2-chlorobuta-1,3-diene
• D. Isobutylene

Hint:

Neoprene rubber is made by the polymerization of 2-chlorobuta-1,3-diene (chloroprene), not by 1,3-butadiene or other monomers.

Answer 1

The Correct Option is C

Step 1: Understanding Neoprene Rubber.
Neoprene rubber is made by the polymerization of 2-chlorobuta-1,3-diene (also known as chloroprene). The monomer undergoes free radical polymerization to form the polymer used in neoprene rubber.

Step 2: Analyzing the options.
(A) 1,3-Butadiene: Incorrect. This is used in the manufacture of Buna-N rubber, not neoprene.
(B) Styrene: Incorrect. Styrene is used in the manufacture of polystyrene, not neoprene.
(C) 2-chlorobuta-1,3-diene: Correct. This is the monomer used to make neoprene rubber.
(D) Isobutylene: Incorrect. Isobutylene is used to make butyl rubber, not neoprene.

Step 3: Conclusion.
The correct monomer for neoprene rubber is 2-chlorobuta-1,3-diene, corresponding to option (C).