JCECE Medical JCECE Medical Solved Paper-2002

  • question_answer
    One compound reacts with chloroform in presence of KOH and produces a bad smell (nause odour) compound. The compound formed is:

    A) \[C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}\]

    B)  \[{{C}_{6}}{{H}_{5}}CN\]

    C)  \[C{{H}_{3}}C{{H}_{2}}NC\]

    D)  \[{{C}_{2}}{{H}_{5}}CN\]

    Correct Answer: C

    Solution :

     Key Idea: This is carbyl amine reaction. In this reaction bad smelling isocyanide is formed by reaction of \[{{1}^{o}}\] amine with \[\text{CHC}{{\text{l}}_{\text{3}}}\]and KOH. So isocyanide is correct answer. \[\underset{{{1}^{o}}\text{amine}}{\mathop{\underset{(a)}{\mathop{C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}}}\,}}\,\]\[\underset{\text{cyanide}}{\mathop{\underset{(b)}{\mathop{{{C}_{6}}{{H}_{5}}CN}}\,}}\,\]\[\underset{\text{isocyanide}}{\mathop{\underset{(c)}{\mathop{C{{H}_{3}}C{{H}_{2}}NC}}\,}}\,\]\[\underset{\text{cyanide}}{\mathop{\underset{(d)}{\mathop{{{C}_{2}}{{H}_{5}}CN}}\,}}\,\]


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