JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkane

  • question_answer
    Action of hydrogen chloride on \[\underset{\,\,\,\,\,C{{H}_{3}}}{\mathop{\underset{|}{\mathop{C{{H}_{3}}-C=C{{H}_{2}}}}\,}}\,\] and on \[CH\equiv CH\] will predominantly give the compounds, respectively

    A) \[\underset{C{{H}_{3}}\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH=C{{H}_{2}}Cl}}\,}}\,\] and \[C{{H}_{2}}Cl-C{{H}_{2}}Cl\]

    B) \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CCl=C{{H}_{3}}}}\,}}\,\] and \[C{{H}_{3}}-CHC{{l}_{2}}\]

    C) \[\underset{C{{H}_{3}}\,\,\,\,}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH=C{{H}_{2}}Cl}}\,}}\,\] and \[C{{H}_{3}}-CHC{{l}_{2}}\]

    D) \[\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,\,\,\,\,\,\,}{\mathop{C{{H}_{3}}-CH=C{{H}_{3}}}}\,}}\,\] and \[C{{H}_{2}}Cl-C{{H}_{2}}Cl\]

    Correct Answer: B

    Solution :

               \[C{{H}_{3}}-\underset{C{{H}_{3}}}{\mathop{\underset{|\,\,\,}{\mathop{C\,}}\,}}\,=C{{H}_{2}}+HCl\to C{{H}_{3}}-\underset{\underset{C{{H}_{3}}}{\mathop{|\,\,\,\,\,\,}}\,}{\overset{\overset{Cl\,\,}{\mathop{|\,\,\,\,\,}}\,}{\mathop{C\,-\,}}}\,C{{H}_{3}}\] \[CH\equiv CH+HCl\to C{{H}_{2}}=CH-Cl\xrightarrow{HCl}C{{H}_{3}}-CHC{{l}_{2}}\]


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