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Question

Which of the following is not formed as intermediate in the polymerisation of alkenes and their derivatives?

A
Carbonium ion
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B
Carbanion
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C
Free radical
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D
Carbene
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Solution

The correct option is C Carbene
In polymerization of alkenes and their derivatives, different chemical processes are used such as cationic, anionic or free -radical polymerization because all such intermediates are possible. But alkenes do not have such number of electrons to form carbene intermediate during polymerization.

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