CET Karnataka Medical CET - Karnataka Medical Solved Paper-2015

  • question_answer
    Number of possible alkynes with formula \[{{C}_{5}}{{H}_{8}}\]is

    A) \[3\]     

    B)  \[5\]

    C)  \[2\]    

    D)  \[4\]

    Correct Answer: A

    Solution :

    : Three possible structures are (i) \[HC\equiv C-C{{H}_{2}}-C{{H}_{2}}-C{{H}_{3}}\] (ii) \[{{H}_{3}}C-C\equiv C-C{{H}_{2}}-C{{H}_{3}}\] (iii) \[{{H}_{3}}C\equiv C-\overset{C{{H}_{3}}}{\mathop{\overset{|}{\mathop{C}}\,}}\,H-C{{H}_{3}}\]


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