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Carbylamine test: which amines give it and the isocyanide formed

This type of question, asked 4 times: 2021 Paper 4, 2021 Paper 11, 7 Apr 2025, 5 Apr 2026 S1. All 4 questions below, oldest first.

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  1. Question 1

    2021 Paper 4

    32
    Carbylamine test is used to detect the presence of primary amino group in an organic compound. Which of the following compound is formed when this test is performed with aniline?

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  2. Question 2

    2021 Paper 11

    37
    Organic compound A with CHCl3/KOHCHCl_{3}/KOH gives product BB which can be decomposed by H+/H2OH^{+}/H_{2}O ?

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  3. Question 3

    7 Apr 2025

    27
    Which of the following amine (s) show (s) positive carbylamines test ? A. Aniline B. (CH3)2NH\left( {CH}_{3} \right)_{2}NH C. CH3NH2{CH}_{3}{NH}_{2} D. (CH3)3 N\left( {CH}_{3} \right)_{3}\text{ }N E. N-Methylaniline. Choose the correct answer from the options given below:

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  4. Question 4

    5 Apr 2026 S1

    41
    Benzyl isocyanide can be obtained from (A) benzyl bromide + AgCNAgCN (B) benzylamine + CHCl3CHCl_{3}, aq. NaOHNaOH (C) bromobenzene + AgCNAgCN (D) aniline + CHCl3CHCl_{3}, aq. NaOHNaOH (E) 2-phenylethyl bromide + KCNKCN Choose the correct answer from the options given below :

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