JEE Main & Advanced Sample Paper JEE Main Sample Paper-19

  • question_answer 85) IUPAC name of   is

    A)  1 -methyl-3 ethyl cyclohexane

    B)  1 -ethyl-3 methyl benzene

    C)  1 -ethyl-3 methyl cycio hexane

    D)  Cycio hexane-1 -ethyl-3-methyl

    Correct Answer: D

    Solution :

    Ethyl group comes first in alphab- atical order but IUPAC name of 2-bromo-4-ethyl-l-methyl cyclohexane. It follows lowest sum rule (i.e., lowest set of locant is preferred.) Lowest sum of locant is\[~=1+2+3=6\]

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