Which among the following is a biodegradable polymer ?
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → PHBV
Biodegradable polymers are broken down by microorganisms in the environment, so they do not pile up as waste. PHBV is a polyester, and bacteria can hydrolyse its ester linkages.
Note 1: This question is from the pre-rationalised NCERT book (2022-23). The topic is not there in the latest NCERT book (2026-27), and it is also out of the CUET 2026 syllabus.
NCERT (Pre-rationalised edition, 2022-23):
Biodegradable Polymers – …
Note 2: The same/similar question has been asked in different years by NTA as per the details given below:
| 2026 | 2025 | 2024 | 2023 | 2022 |
|---|---|---|---|---|
| – | – | 29-05 S1 | 26-05 S3 | – |