AMU Medical AMU Solved Paper-1997

  • question_answer
    Which one of the following is a trihydric alcohol containing only secondary hydroxyl groups?

    A)  \[\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,\]

    B)  \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}\]

    C)  \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  HO \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}\,}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{2}}-OH\]

    D)  \[\underset{\begin{smallmatrix}  | \\  HO \end{smallmatrix}}{\mathop{C{{H}_{2}}}}\,-\underset{\begin{smallmatrix}  | \\  HO \end{smallmatrix}}{\mathop{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}\,}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}\]

    Correct Answer: B

    Solution :

    : \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\overset{2{}^\circ }{\mathop{CH}}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\overset{2{}^\circ }{\mathop{CH}}}\,-\underset{\begin{smallmatrix}  | \\  OH \end{smallmatrix}}{\overset{2{}^\circ }{\mathop{CH}}}\,-C{{H}_{3}}\]


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