CET Karnataka Engineering CET - Karnataka Engineering Solved Paper-2004

  • question_answer
    On treating a mixture of two alkyl halides with sodium metal in dry ether, 2-methyl propane was obtained. The alkyl halides are :

    A)  2-chloropropane and chloromethane

    B)  2-chloropropane and chloroethane

    C)  chloromethane and chloroethane

    D)  chloromethane and 1-chloropropane

    Correct Answer: A

    Solution :

    This is Wurtz reaction. 2-chloropropane and chloromethane reacts in presence of dry ether to form 2-methyl propane. \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}\xrightarrow{ether}\]                                 \[C{{H}_{3}}-\underset{\begin{smallmatrix}  | \\  C{{H}_{3}} \end{smallmatrix}}{\mathop{C}}\,H-C{{H}_{3}}+2NaCl\]


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