JEE Main & Advanced Sample Paper JEE Main - Mock Test - 21

  • question_answer
    \[CHC{{l}_{3}}\] and \[KOH\]on heating with a compound forms a bad smelling product \[(X),\] X is

    A)  \[{{C}_{2}}{{H}_{5}}CN\]                 

    B) \[{{C}_{2}}{{H}_{5}}NC\]

    C) \[{{C}_{2}}{{H}_{5}}OH\]           

    D)        \[{{C}_{2}}{{H}_{5}}N{{H}_{2}}\]

    Correct Answer: B

    Solution :

    This is carbylamine reation which is used to detect presence of \[1{}^\circ \] amine in organic compounds. The bad smelling compound is isocyanide. \[\underset{Chloroform}{\mathop{CHC{{l}_{3}}}}\,+3KOH+\underset{Ethyl\,\,\text{amine}}{\mathop{{{C}_{2}}{{H}_{5}}N{{H}_{2}}}}\,\xrightarrow{{}}\] \[\underset{Ethylisocyanide}{\mathop{{{C}_{2}}{{H}_{5}}N\underset{\scriptscriptstyle\rightarrow}{=}C+}}\,3KCl+3{{H}_{2}}O\]


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