JEE Main & Advanced Chemistry Hydrocarbons / हाइड्रोकार्बन Question Bank Alkene

  • question_answer
    Olefins can be hydrogenated by [AIIMS 1991]

    A) Zinc and \[HCl\]

    B) Nascent hydrogen

    C) Raney Ni and \[{{H}_{2}}\]

    D) Lithium hydride in ether

    Correct Answer: C

    Solution :

    \[\underset{\text{Ethene}}{\mathop{C{{H}_{2}}}}\,=C{{H}_{2}}+{{H}_{2}}\underset{{{300}^{o}}}{\mathop{\xrightarrow{Ni}}}\,\underset{\text{Ethane}}{\mathop{C{{H}_{3}}-C{{H}_{3}}}}\,\]


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