Question

Which from following polymers is used to prepare shoe soles?

• A. Polyacrylamide
• B. Perspex
• C. Buna- N
• D. Glyptal

Hint:

Buna-type polymers are synthetic rubbers. So when the question involves tyres, shoe soles, or rubber-like materials, Buna polymers are strong candidates.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
Different polymers have specific properties (elasticity, strength, chemical resistance) that determine their industrial uses.
Step 2: Key Formula or Approach:
Match the polymer type (rubber vs plastic) to the application.
Step 3: Detailed Explanation:
- Buna-N: A synthetic copolymer of 1,3-butadiene and acrylonitrile. It is a synthetic rubber known for its high oil resistance and durability. It is widely used for making oil seals, tank linings, and shoe soles.
- Polyacrylamide: Used as a flocculant in water treatment.
- Perspex: (Acrylic) Used for making lenses and aircraft windows.
- Glyptal: Used in paints and lacquers.
Step 4: Final Answer:
Buna-N is used to prepare shoe soles.