Q48 / 150 · MHT CET 2026 (15 April Shift 2) · Chemistry
Which among the following is NOT a polyester polymer ?
- AGlyptal
- Correct answerBNovolac
- CPHBV
- DDacron
Solution
Glyptal is a polyester polymer formed by the condensation of ethylene glycol and phthalic acid.
PHBV (Poly $\beta$-hydroxybutyrate-co-$\beta$-hydroxyvalerate) is a biodegradable aliphatic polyester.
Dacron (Terylene) is a polyester polymer formed by the condensation of ethylene glycol and terephthalic acid.
Novolac is a linear condensation polymer of phenol and formaldehyde, which does not contain ester linkages. Therefore, it is not a polyester polymer.
Answer: Novolac
PHBV (Poly $\beta$-hydroxybutyrate-co-$\beta$-hydroxyvalerate) is a biodegradable aliphatic polyester.
Dacron (Terylene) is a polyester polymer formed by the condensation of ethylene glycol and terephthalic acid.
Novolac is a linear condensation polymer of phenol and formaldehyde, which does not contain ester linkages. Therefore, it is not a polyester polymer.
Answer: Novolac
Hence, the correct answer is option: 'B'.