Which of the following method is favourable for the preparation of Iodobenzene?

Sandmeyer method

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Gatterman method

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Benzenediazonium salt solution with KI

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None of the above

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Solution

The correct option is C Benzenediazonium salt solution with KI
Iodine is not easily introduced into benzene ring directly, but when benzenediazonium salt solution is treated with KI, iodobenzene is formed.

This method of preparation of Iodobenzene is preffered over Sandmeyer and Gatterman method.

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