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Which among the following is not a polyester ? (1) Novolac (2) PHBV (3) Dacron (4) Glyptal

1. Novolac
2. PHBV
3. Dacron
4. Glyptal

Correct answer: Novolac

Solution

Novolac is a phenol-formaldehyde resin (a phenolic polymer), so it is NOT a polyester. PHBV, Dacron (terylene), and Glyptal are all polyesters.

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