BCECE Medical BCECE Medical Solved Papers-2012

  • question_answer
    Which one of the following is correct?

    A)  On reduction any aldehyde gives secondary alcohol

    B)  Reaction of vegetable oil with \[{{H}_{2}}S{{O}_{4}}\] gives glycerine

    C)  Alcoholic iodine with \[NaOH\] gives iodoform

    D)  Sucrose on reaction with \[NaCl\] gives invert sugar

    Correct Answer: C

    Solution :

    \[{{C}_{2}}{{H}_{5}}OH+4{{I}_{2}}+6NaOH\xrightarrow{{}}\underset{iodofonn}{\mathop{CH{{I}_{3}}\downarrow }}\,\]                 \[+HCOONa+5NaI+5{{H}_{2}}O\] Iodoform is a pale yellow solid.


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