When aniline in hydrochloric acid is treated with ice cold solution of sodium nitrite, it gives:

benzene diazonium chloride

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chlorobenzene

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nitro Aniline

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chloro Aniline

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Solution

The correct option is B benzene diazonium chloride
Aniline reacts with sodium nitrite and HCl in cold condition to form benzene diazonium chloride.
$C_{6} H_{5} {N H}_{2} aniline H C l - --- \to {N a N O}_{2} [C_{6} H_{5} - N_{2}^{+} C l^{-}] benzene diazonium chloride$

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from Sodium Nitrite and mineral acid, the product formed is:

$C_{6} H_{5} N H_{2} + H C l + N a N O_{2} \to$ _____________ + $2 H_{2} O$

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