Q. 55

Phenol and formal

Class 12th Chemistry - Exemplar 15. Polymers

Answer :

Polymer ‘A’ is Novolac and ‘B’ is Bakelite.

Novolac on heating with HCHO undergoes the cross-linkage to give an infusible solid called Bakelite. Novalac has a linear polymer chain whereas Bakelite is a cross-linked polymer.

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