Aniline when treated with $N a N O_{2}$ and $H C l$ at $0 - 5^{0} C$ gives ____________ as a product.

chloroaniline

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benzene diazonium chloride

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chlorobenzene

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dichlorobenzene

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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.
$C_{6} H_{5} {N H}_{2} a n i l i n e H C l - --- \to {N a N O}_{2} [C_{6} H_{5} - N_{2}^{+} C l^{-}] b e n z e n e d i a z o n i u m c h l o r i d e$

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{0 - 5}^{0} C

{N a N O}_{2}

H N O_{2}

H C l

0^{\circ} C

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[CPMT 1982, 89; RPMT 2000]

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

0 - 5^{\circ} C

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