JEE Main Chemistry question

Which of the following can be used to distinguish between C₆H₅NH₂ (aniline) and C₆H₅CH₂NH₂ (benzylamine)?

(A)Diazotisation followed by coupling with phenolCorrect
(B)The carbylamine reaction (both are primary amines and both give a positive test)
(C)The Reimer–Tiemann reaction (specific to phenols; neither compound is a phenol)
(D)None of the above

Answer: (A)

Solution

On cold diazotisation, aniline's aromatic diazonium salt is stable enough to couple with phenol and give a coloured azo dye; benzylamine, an aliphatic primary

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Question ID VK-140364