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B
Novolac
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C
Bakelite
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D
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.