CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2005

  • question_answer
    The reaction in which phenol differs from alcohol is :

    A)  it undergoes esterification with carboxylic acid

    B)  it reacts with ammonia

    C)  it forms yellow crystals of iodoform

    D)  it liberates \[{{H}_{2}}\] with Na metal.

    Correct Answer: C

    Solution :

    lodoform test is given by those compounds which has \[C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,-C/H\] or \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-\]units. Hence, this test is not given by phenol \[({{C}_{6}}{{H}_{5}}-OH)\]


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