BCECE Engineering BCECE Engineering Solved Paper-2007

  • question_answer
    Clemmensens reduction of ketones is carried  out in

    A) \[LiAl{{H}_{4}}\]in \[{{H}_{2}}O\]             

    B)  glycol and KOH

    C)  \[Zn-Hg\]and \[HCl\]

    D)        \[{{H}_{2}}\]and \[Pd\]catalyst

    Correct Answer: C

    Solution :

    Reduction of\[>C=O\]compounds to alkanes (\[>C{{H}_{2}}\]group) by Zn-Hg and \[HCl\] is known as Clemmensen reduction. \[>C=O\xrightarrow[[4H]]{Zn-Hg/HCl}>C{{H}_{2}}+{{H}_{2}}O\]


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