NEET Chemistry NEET PYQ-IUPAC and Isomerism

  • question_answer
    Which nomenclature is not according to IUPAC system?                                    [AIPMT (S) 2012]

    A) \[\underset{1-bromo\,pro-2-ene}{\mathop{Br-C{{H}_{2}}-CH=C{{H}_{2}}}}\,\]

    B) \[\underset{4-bromo-2,\,4-\dimethylhexane}{\mathop{C{{H}_{3}}-C{{H}_{2}}-\underset{\begin{smallmatrix}  | \\  Br \end{smallmatrix}}{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{2}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,HC{{H}_{3}}}}\,\]

    C)

    D) \[\underset{5-oxohexanoic\,acid}{\mathop{C{{H}_{3}}-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{C}}\,-C{{H}_{2}}-C{{H}_{2}}}}\,-C{{H}_{2}}COOH\]

    Correct Answer: A

    Solution :

    [a] In IUPAC system of nomenclature, preference is given to multiple bond than halogen substituent, so the correct name of is


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