Which one of the following tests can be used to identify primary amino group in a given organic compound?

Iodoform test

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Victor Meyer's test

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Carbylamine reaction

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Libermann's reaction

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Solution

The correct option is C Carbylamine reaction
Carbylamine reaction can be used to identify primary amino group in a given organic compound. When primary amines are treated with chloroform and alcoholic KOH, they give isocyanides (carbylamines) having very unpleasant smell which can be easily detected.
$R N H_{2} + C H C l_{3} + 3 K O H \to R N C + 3 K C l + 3 H_{2} O$

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