VMMC VMMC Medical Solved Paper-2008

  • question_answer
    An organic compound, \[{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{6}}}\text{O}\]does not give a precipitate with 2, 4-dinitrophenyl hydrazine reagent and does not react with metallic sodium. It could be

    A) \[C{{H}_{3}}C{{H}_{2}}CHO\]

    B) \[~C{{H}_{2}}=CHC{{H}_{2}}OH\]

    C) \[C{{H}_{3}}COC{{H}_{3}}\]

    D) \[C{{H}_{2}}=CH-O-C{{H}_{3}}\]

    Correct Answer: D

    Solution :

    Since, the compound does not give a precipitate with 2, 4-dinitrophenylhydrazine, it cannot be an aldehyde or a ketone. Further since it does not react with metallic sodium, therefore, it cannot be an alcohol. Thus, the compound \[{{\text{C}}_{\text{3}}}{{\text{H}}_{\text{6}}}\text{O}\]must be an ether \[i.e.,\]option (d) is correct.


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