JCECE Engineering JCECE Engineering 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 \[CHC{{l}_{3}}\] and\[~KOH\]. So isocyanide is correct answer. \[\underset{\begin{smallmatrix}  (a) \\  {{1}^{o}}\text{amine} \end{smallmatrix}}{\mathop{C{{H}_{3}}C{{H}_{2}}N{{H}_{2}}}}\,\]\[\underset{\begin{smallmatrix}  (b) \\  cynide \end{smallmatrix}}{\mathop{{{C}_{6}}{{H}_{5}}CN}}\,\]\[\underset{\begin{smallmatrix}  (c) \\  isocyanide \end{smallmatrix}}{\mathop{C{{H}_{3}}C{{H}_{2}}NC}}\,\]\[\underset{\begin{smallmatrix}  (d) \\  cyanide \end{smallmatrix}}{\mathop{{{C}_{2}}{{H}_{5}}CN}}\,\]


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