Which can be used to distinguish ${{\rm{C}}_6}{{\rm{H}}_5}{\rm{N}}{{\rm{H}}_2}\,{\rm{and}}\,{{\rm{C}}_6}{{\rm{H}}_5}{\rm{C}}{{\rm{H}}_2}{\rm{N}}{{\rm{H}}_2}\,?$

JEE CHEMISTRY MCQ: AMINES

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Which can be used to distinguish

{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{N}{\mathrm{H}_2}\,\mathrm{and}\,{\mathrm{C}_6}{\mathrm{H}_5}\mathrm{C}{\mathrm{H}_2}\mathrm{N}{\mathrm{H}_2}\,?

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Correct option: A

Diazotisation followed with coupling with phenol

Option A is correct because diazotization followed by coupling with phenol will produce an orange-red dye with aniline (C6H5NH2), distinguishing it from benzylamine (C6H5CH2NH2).

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{{\text{C}}_6}{{\text{H}}_5}{\text{N}}{{\text{H}}_2}\xrightarrow{{{\text{NaN}}{{\text{O}}_2} + {\text{HCl}}}}{\text{X}}\xrightarrow{{{\text{CuCN}}}}{\text{Y}}\xrightarrow{{{{\text{H}}^ + }/{{\text{H}}_2}{\text{O}}}}{\text{Z}}

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