Question

Which is an example of thermosetting polymer?

• A. Bakelite
• B. Polystyrene
• C. Nylon 6,6
• D. Polyvinyl chloride

Hint:

Thermosetting polymers have extensive cross-links, so they cannot be softened again by heat.

Answer 1

The Correct Option is A

Step 1: Recall the examples
Common thermosetting polymers are Bakelite and melamine-formaldehyde resin.

Step 2: Eliminate the others
Polystyrene and PVC are thermoplastics, and nylon-6,6 is a fibre-forming polymer.

Step 3: Conclusion
Only Bakelite is thermosetting.

Final Answer:
Option A is correct. \[ \boxed{\text{(A) }\text{Bakelite}} \]