Which of the following is/are correct with respect to benzene diazonium chloride?

It is reduced to aniline by excess of

Z n

and conc.

H C l

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It is reduced to phenylhydrazine by

S n C l_{2}

and

H C l

followed by

N a O H

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When it is treated with ethanol, it produces benzene and ethanoic acid

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When it is heated with water, it gives phenol

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Solution

The correct options are
A It is reduced to aniline by excess of $Z n$ and conc. $H C l$
B It is reduced to phenylhydrazine by $S n C l_{2}$ and $H C l$ followed by $N a O H$
D When it is heated with water, it gives phenol
(a) $P h -_{2} - C l Z n / c o n c H C l - ------- \to P h - N H_{2}$

(b) $P h -_{2} - C l S n C l_{2} / H C l - ------ \to P h - N H + N H_{3} - C l N a O H - --- \to P h - N H N H_{2}$

(c) $P h -_{2} - C l E t O H - -- \to P h - H + C H_{3} C H O + N_{2} + H C l$

(d) $P h -_{2} - C l w a t e r - -- \to △ P h - O H + N_{2} + H C l$

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Which of the following compound will not undergo azo coupling reaction with benzene diazonium chloride?

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