Q. Assertion : Wurtz reaction is not preferred for the preparation of alkanes containing odd number of carbon atoms.
Reason : It is not possible to prepare alkanes with odd number of carbon atoms through Wurtz reaction.

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Solution:

Wurtz reaction is not preferred for the preparation of alkanes containing odd number of carbon atoms since many side products are formed and a mixture of alkanes is formed because both alkyl halides react with each other and also with themselves.