The linear polymer (E) is:

Resol

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Novolac

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Bakelite

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Both a and b

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Solution

The correct option is D Both a and b
Both Novolac and Resol are the products of the Phenol- Formaldehyde condensation reaction. When Phenol is used in excess in the presence of an acidic catalyst, Novolac is formed. Whereas, when formaldehyde is used in excess with a basic catalyst, Resol is formed.

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