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MHT CET202615 April 2026Evening ShiftChemistryPolymersActual

Which among the following is NOT a polyester polymer ?

Options

  1. AGlyptal
  2. BNovolac
  3. CPHBV
  4. DDacron

Correct answer

B. Novolac

Step-by-step solution

Glyptal is a polyester polymer formed by the condensation of ethylene glycol and phthalic acid. PHBV (Poly -hydroxybutyrate-co- -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

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