Q. Which of the following statements is/are correct?

1. Nylon-6 is obtained by polymerization of caprolactam.
2. Glyptal is a polyester formed from glycerol and phthalic acid.
3. Buna-S is a copolymer of butadiene and styrene.
4. Terylene is a polyamide.

Select the correct answer using the codes given below:
Answer: Only 1, 2 & 3
Notes: Nylon-6 is produced from caprolactam (true). Glyptal is a polyester from glycerol and phthalic acid (true). Buna-S is a copolymer of butadiene and styrene (true). Terylene, also called PET, is a polyester, not a polyamide (false). So, only statements 1, 2, 3 are correct.