Haryana PMT Haryana PMT Solved Paper-2011

  • question_answer
    Geometrical isomerism is shown by

    A)  2-butene

    B)  2-butyne

    C)  2-butanol

    D)  butanal

    Correct Answer: A

    Solution :

                    A compound containing a double bond can show geometrical isomerism only when identical groups are not present on the double bonded carbons. Hence, 2-butene shows the geometrical isomerism. \[\underset{cis}{\mathop{\underset{C{{H}_{3}}-C-H}{\overset{C{{H}_{3}}-C-H}{\mathop{||}}}\,}}\,\]                \[\underset{trans}{\mathop{\underset{H-C-C{{H}_{2}}}{\overset{C{{H}_{3}}-C-H}{\mathop{||}}}\,}}\,\]


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