BHU PMT BHU PMT (Screening) Solved Paper-2010

  • question_answer
    lodoform can be obtained on warming\[NaOH\] and iodine with

    A)  \[C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{3}}\]

    B)  \[{{(C{{H}_{3}})}_{2}}CH\overset{\begin{smallmatrix}  O \\  || \end{smallmatrix}}{\mathop{C}}\,{{C}_{2}}{{H}_{5}}\]

    C)  \[C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,-OC{{H}_{3}}\]

    D)  \[{{(C{{H}_{3}})}_{2}}CHC{{H}_{2}}OH\]

    Correct Answer: A

    Solution :

                     Alcohols having\[C{{H}_{3}}CH(OH)\]group and ketones having\[C{{H}_{3}}CO\]group give iodoform when warmed with\[NaOH\]and 12. Thus, only\[C{{H}_{3}}C{{H}_{2}}CH(OH)C{{H}_{3}}\] gives iodoform on warming with\[NaOH\]and\[{{I}_{2}}\].


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