RAJASTHAN ­ PET Rajasthan PET Solved Paper-2003

  • question_answer
    Possible number of isomers of alkane\[{{C}_{5}}{{H}_{12}}\]will be

    A)  4               

    B)  3

    C)  5               

    D)  6

    Correct Answer: B

    Solution :

     Possible isomers of alkane\[{{C}_{5}}{{H}_{12}}\]is three (I)\[C{{H}_{3}}C{{H}_{2}}C{{H}_{2}}C{{H}_{2}}C{{H}_{3}}\]pentane (II) \[C{{H}_{3}}C{{H}_{2}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{CH}}\,-C{{H}_{3}}\] 2-methyl butane (III)\[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\overset{\begin{smallmatrix}  C{{H}_{3}} \\  | \end{smallmatrix}}{\mathop{C}}}\,-C{{H}_{3}}\]2,2-dimethyl propane


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