KVPY Sample Paper KVPY Stream-SX Model Paper-28

  • question_answer
    \[I{{O}^{\Theta }}\] gives positive test with

    A)

    B)

    C)

    D)

    Correct Answer: A

    Solution :

    only [A]
    because for positive idoform test either \[-\underset{\underset{OH}{\mathop{|}}\,}{\mathop{CH}}\,-C{{H}_{3}}\] or  \[-\underset{\underset{O}{\mathop{\parallel }}\,}{\mathop{C}}\,-C{{H}_{3}}\] group must be present
    \[Ph-\underset{\underset{O}{\mathop{|}}\,}{\mathop{CH}}\,-C{{H}_{3}}\xrightarrow{I{{O}^{\Theta }}}Ph-\underset{\underset{O}{\mathop{\parallel }}\,}{\mathop{C}}\,-C{{H}_{3}}\]\[\xrightarrow{I{{O}^{\Theta }}}Ph-CO{{O}^{\Theta }}+CH{{I}_{3}}\]


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