Which of the following is biodegradable polymer of polyamide class?
a. Dextron          b. Nylon-2-nylon-6          c. Nylon-6,6          d. PHBV

The solution is as follows:

1. The correct option is (2) Nylon-2-nylon-6.

2. Dextron and PHBV are also bio-degredable but they are not polyamides.

3. Nylon-6,6 is polyamide, but they are non-biodegredable.