2. Solved Papers
  3. NEET

NEET NEET SOLVED PAPER 2015 (C)

  • question_answer
    An organic compound X having molecular formula \[{{C}_{5}}{{H}_{10}}O\] yields phenyl hydrazone and gives negative response to the iodoform test and Tollen's test. It produces n-pentane on reduction. X could be

    A)  pentanal            

    B)  2-pentanone

    C)         3-pentanone      

    D)         n-amyl alcohol

    Correct Answer: C

    Solution :

    Since, the compound X yields phenyl hydrazone and gives negative response to the iodoform test and Tollen's test, it must contain a \[C=O\] group but is neither a methyl ketone nor an aldehyde. The structure of X could be \[\underset{3-\text{pentanone}}{\mathop{C{{H}_{3}}-C{{H}_{2}}-\overset{\overset{\text{O}}{\mathop{|\,\,|}}\,}{\mathop{C}}\,-C{{H}_{2}}-C{{H}_{3}}}}\,\] having molecular formula \[{{C}_{5}}{{H}_{10}}O.\]


You need to login to perform this action.
You will be redirected in 3 sec spinner