The structure given below is an example of
I. A condensation and biodegradable polymer. II. A biodegradable and thermoplastic polymer. III. A biodegradable and thermosetting polymer. IV. A polyester and thermoplastic polymer.

• A

  I, II and III
• Correct answer
  B

  I, II and IV
• C

  I, III and IV
• D

  II, III and IV

Solution

It is PHBV, i.e. poly- $\beta$-hydroxy butyrate-co- $\beta$-hydroxy valerate. It is a condensation, biodegradable and thermoplastic polyester (copolymer). So, statements I, II and IV are correct.

Hence, the correct answer is option: 'B'.