Punjab Medical Punjab - MET Solved Paper-2007

  • question_answer
    \[IUPAC\]name of the following is\[C{{H}_{2}}=CH-C{{H}_{2}}-C{{H}_{2}}-C\equiv CH\]

    A)  1, 5-hexenyne                 

    B)  1-hexene-5-yne

    C)  1-hexyne-5-ene             

    D)  1, 5-hexynene

    Correct Answer: B

    Solution :

    The double bond gets priority over triple bond. So, the \[IUPAC\] name of \[\overset{1}{\mathop{C}}\,{{H}_{2}}=\overset{2}{\mathop{C}}\,H-\overset{3}{\mathop{C}}\,{{H}_{2}}-\overset{4}{\mathop{C}}\,{{H}_{2}}-\overset{5}{\mathop{C}}\,\equiv \overset{6}{\mathop{C}}\,H\]is Hex-1-en-5-yne or l-hexene-5-yne.


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