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Question

Which of the following when treated with aniline will give benzene diazonium chloride as the major product?

A
NaNO2 and HCl between 050C
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B
HNO3 and HCl between 050C
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C
C6H5NO2 between 050C
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D
NaNO2 between 050C
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Solution

The correct option is A NaNO2 and HCl between 050C
Benzene diazonium chloride is PhN+2Cl.

It is formed when aniline is treated with NaNO2HCl at a temperature between 0-5C.

PhNH2+NaNO2+HClPhN+2Cl

Benzene diazonium chloride is an important synthetic intermediate and is used in a number of reactions.

Option A is correct.

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