JEE Previous Year Question
The Novolac polymer has mass of 963 g. The number of monomer units present in it are
Topic: JEE PYQ
Answer: 9. Full step-by-step solution below.
Correct answer: 9
Solution
(9)Monomer unit of Novolac is
Its molecular mass is 124 amu.
Upon considering molecular weight of polymer
as 963 amu (In question its given as 963 gram)
Now if during formation of Novolac, (n-1) unit of water are removed then
nx124 = 963 + [l8x(n-1)]
n= 9
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