JAMIA MILLIA ISLAMIA Jamia Millia Islamia Solved Paper-2010

  • question_answer
        The iodoform test is not given by

    A)  \[C{{H}_{3}}\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,HC{{H}_{3}}\]    

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

    C)  \[C{{H}_{3}}C{{H}_{2}}OH\]

    D)  \[C{{H}_{3}}C{{H}_{2}}\overset{\begin{smallmatrix}  O \\  |\,| \end{smallmatrix}}{\mathop{C}}\,C{{H}_{2}}C{{H}_{3}}\]

    Correct Answer: D

    Solution :

                    The alcohols having the structure\[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C}}\,H-\] or ketones having the unit\[C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,H-\]give iodoform test. \[C{{H}_{3}}C{{H}_{2}}COC{{H}_{2}}C{{H}_{3}}\]does not have such kind of structure, hence it will not give iodoform test.


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