Chhattisgarh PMT Chhattisgarh PMT Solved Paper-2011

  • question_answer
    Which one of the following monoenes does not exhibit geometric isomerism?

    A)  \[{{C}_{4}}{{H}_{8}}\]

    B)  \[{{C}_{3}}{{H}_{6}}\]

    C)  \[{{C}_{5}}{{H}_{10}}\]

    D)  \[{{C}_{8}}{{H}_{16}}\]

    Correct Answer: B

    Solution :

    The   main   conditions   for  exhibiting geometrical isomerism are (i) presence of double bond (ii) presence of different groups on same double bonded carbon         (iii) presence of at least one similar group on adjacent double bonded carbon atoms \[\therefore \] \[{{C}_{3}}{{H}_{6}}(\overset{3}{\mathop{C}}\,{{H}_{3}}-\overset{2}{\mathop{C}}\,H=\overset{1}{\mathop{C}}\,{{H}_{2}})\] does not exhibit geometric isomerism due to the presence of same group on double bonded carbon atom \[({{C}_{1}})\].


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