JCECE Engineering JCECE Engineering Solved Paper-2006

  • question_answer
    \[IUPAC\]name of\[C{{H}_{3}}-C\equiv C-HC-{{(C{{H}_{3}})}_{2}}\]is:

    A)  4-methyl-2-pentyne

    B)  1, 1-dimethyl-2-butyne

    C)  2-methyl-4-pentyne

    D)   4, 4-dimethyl-2-butyne

    Correct Answer: A

    Solution :

    \[IUPAC\]name \[\underset{4-methyl-2pentyne}{\mathop{\overset{1}{\mathop{C}}\,{{H}_{3}}-\overset{2}{\mathop{C}}\,\equiv \overset{3}{\mathop{C}}\,-H\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{4}{\mathop{C}}}\,-\overset{5}{\mathop{C}}\,{{H}_{3}}}}\,\]


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