RAJASTHAN PMT Rajasthan - PMT Solved Paper-2004

  • question_answer
    Which of the following does not give carbylamine test?

    A)  \[\phi -N{{H}_{2}}\]

    B)  \[C{{H}_{3}}N{{H}_{2}}\]

    C)  \[{{(C{{H}_{3}})}_{2}}NH\]

    D)  all die above give this test

    Correct Answer: C

    Solution :

    Dimethyl amine \[{{(C{{H}_{3}})}_{2}}NH\] does not give carbyl-amine reaction.   Carbylamine reaction is the characteristic reaction of alephatic and aromatic primary amines. \[R-N{{H}_{2}}+CHC{{l}_{3}}+3KOH\xrightarrow{\Delta }\underset{isocyanide}{\mathop{R-NC}}\,\]                                                 \[3KCl+3{{H}_{2}}O\]


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