JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    The reaction \[\underset{OH}{\mathop{\underset{|\,}{\mathop{\overset{\,\,\,\,\,\,\,C{{H}_{3}}}{\mathop{\overset{\,|}{\mathop{C{{H}_{3}}-C-C{{H}_{3}}}}\,}}\,}}\,}}\,\xrightarrow{{{H}_{2}}S{{O}_{4}}}\overset{\,\,\,\,\,\,\,C{{H}_{3}}}{\mathop{\overset{\,|}{\mathop{C{{H}_{3}}-C=C{{H}_{2}}}}\,}}\,\] is the example of [AMU 1983]

    A) Sulphonation

    B) Dehydration

    C) Alkylation

    D) Decomposition

    Correct Answer: B

    Solution :

    \[\underset{\text{2Methyl-2-hydroxy propane }}{\mathop{C{{H}_{3}}-\overset{\overset{\text{C}{{\text{H}}_{\text{3}}}}{\mathop{\,\,|\,\,\,\,\,\,\,\,\,\,\,\,}}\,\,\,\,\,\,\,\,\,}{\mathop{\underset{\underset{OH}{\mathop{|\,\,\,\,\,\,}}\,\,\,\,\,\,\,\,\,\,\,\,\,}{\mathop{C-C{{H}_{3}}}}\,}}\,}}\,\underset{\text{Dehydration}}{\mathop{\xrightarrow{{{H}_{2}}S{{O}_{4}}}}}\,\underset{\begin{smallmatrix}  \, \\  \text{Isobutene} \end{smallmatrix}}{\mathop{C{{H}_{3}}-\overset{\overset{C{{H}_{3}}}{\mathop{|\,\,\,\,\,\,\,\,}}\,}{\mathop{C=\,}}\,C{{H}_{2}}}}\,+{{H}_{2}}O\]


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