MHT CET 2023 Chemistry question

Not in JEE Main or NEET syllabus

Identify the monomers used to prepare novolac.

(A)Isoprene
(B)1, 3-Butadiene
(C)Phenol and formaldehydeCorrect
(D)Melamine

Answer: (C)

Solution

Novolac is a linear phenol-formaldehyde polymer obtained by condensation of phenol with a deficiency of formaldehyde (HCHO) in acidic medium; the - and -hydroxymethyl phenols condense through links. On heating with

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Question ID VK-097872