KVPY SB SX Exam 2011 Question Paper

Question : 46 of 120

Marks: +1, -0

Among i-iv

the compound that does not undergo polymerization under radical initiation, is

Solution:

The compound that does not undergo polymerization under radical initiation, is compound
(i). It is styrene (ethyl benzene). It polymerises through anionic polymerisation to form polystyrene.

K N H_{2}

is added during the initiation step of polymerisation to form an ionic intermediate

H_{2} N-C H_{2}-C H-C_{6} H_{5} K^{+}

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