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# Which among the following is not a polyester?

Question:

Which among the following is not a polyester?

1. Novolac

2. PHBV

3. Dacron

4. Glyptal

Correct Option: 1

Solution:

Novalac is a linear polymer of $[\mathrm{Ph}-\mathrm{OH}+\mathrm{HCHO}]$.