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DUMET Medical DUMET Medical Solved Paper-2001

  • question_answer
    The IUPAC name of \[C{{H}_{3}}-\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,-C{{H}_{2}}-\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}\] is:

    A)  4- methyl-2, 4-pentanediol

    B)  2-methyl-2, 4-pentanediol

    C)  1, 1-dimethyl 1, 3-butanediol

    D)  1, 2 3- trimethyl-1, 3-propanediol

    Correct Answer: B

    Solution :

    Key Idea: Select the longest possible carbon atom chain and then name the compound according to IUPAC rules. \[\underset{2-methyl\text{ }2,4-pentanediol}{\mathop{^{1}C{{H}_{3}}{{-}^{2}}\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,}}\,{{-}^{3}}C{{H}_{3}}{{-}^{4}}\overset{\begin{smallmatrix}  OH \\  | \end{smallmatrix}}{\mathop{C}}\,H{{-}^{5}}C{{H}_{3}}}}\,\]


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