When aniline reacts with \( \mathrm{HNO}_{2}\left(\mathrm{NaNO}_{2}...
When aniline reacts with \( \mathrm{HNO}_{2}\left(\mathrm{NaNO}_{2}+\mathrm{HCl}\right) \) diazonium chloride is formed which on reaction with \( \mathrm{H}_{3} \mathrm{PO}_{2} \) gives :
(1) \( \mathrm{CH} \equiv \equiv \mathrm{CH} \)
(2) \( \mathrm{C}_{6} \mathrm{H}_{6} \)
(3) \( \mathrm{CH}_{2}==\mathrm{CH}_{2} \)
(4) \( \mathrm{CH}_{3}-\mathrm{CH}_{3} \)
\( \mathrm{P} \)
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