NEET UG CHEMISTRY MCQ: AMINES

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Analyzing +4 | -1

Aniline and methyl amine can be differentiated by:

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Correct option: A

Diazotisation followed by coupling with phenol

Option A (Diazotisation followed by coupling with phenol) is correct because aniline undergoes diazotization to form a diazonium salt, which then couples with phenol to form a colored dye, while methylamine does not form a stable diazonium salt under the same conditions.

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Which statement is not correct regarding aniline? The gas evolved when methyl amine reacts with nitrous acid is Diethylamine on oxidation with

\mathrm{KMn}{\mathrm{O}_4}

gives: An organic amino compound reacts with aqueous nitrous acid at low temperature to produce an oily nitroso amine. The compound is Aniline was diazotised and subsequently reduced with stannous chloride and hydrochloric acid to yield: The reaction is

Ar\,\mathop {{N_2}}\limits^ + \,C{l^ - }\xrightarrow{{Cu/HCl}}\,ArCl + {N_2} + \,CuCl\,\,