Manipal Engineering Manipal Engineering Solved Paper-2010

  • question_answer
    Which of the following does not answer iodoform test?

    A) \[n-\]butyl alcohol

    B) Acetophenone

    C) Acetaldehyde

    D) Ethylmethyl ketone

    Correct Answer: A

    Solution :

    lodoform test is given by the compounds containing either\[C{{H}_{3}}CO-\]group or \[C{{H}_{3}}CHOH\]group. The structures of the given compounds are as (a)\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}OH\] (b)\[C{{H}_{3}}CO{{C}_{6}}{{H}_{5}}\] (c)\[C{{H}_{3}}CHO\] (d)\[C{{H}_{3}}CO{{C}_{2}}{{H}_{5}}\] \[\therefore \,\,n\]butyl alcohol does not give iodoform test because   it   does   not   possess   the \[C{{H}_{3}}CO-\]or\[C{{H}_{3}}\overset{|}{\mathop{C}}\,HOH\] group.


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