Question

Buna-S is a polymer of:

• A. Iso-butadiene
• B. Styrene and butane
• C. Butadiene and styrene
• D. Acrylonitrile, butadiene and styrene

Hint:

Buna-S is a synthetic rubber (Styrene-Butadiene Rubber, SBR), used in car tires.

Answer 1

The Correct Option is C

Step 1: Define Buna-S.
Buna-S is a synthetic rubber produced by the polymerization of butadiene and styrene.

Step 2: Evaluate the provided options.
- (A) Iso-butadiene: Incorrect.
- (B) Styrene and butane: Incorrect; Buna-S uses butadiene, not butane.
- (C) Butadiene and styrene: This accurately describes Buna-S.
- (D) Acrylonitrile, butadiene, and styrene: This combination produces ABS polymer, not Buna-S.

Step 3: State the conclusion.
The correct option is (C) Butadiene and styrene.