JEE Main & Advanced Chemistry Haloalkanes and Haloarenes / हैलोएल्केन तथा हैलोएरीन्स Question Bank Properties of Halogen Containing Compounds

  • 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 [KCET 2004]

    A) 2-chloropropane and chloromethane

    B) 2-chloropropane and chloroethane

    C) Chloromethane and chloroethane

    D) Chloromethane and 1-chloropropane

    Correct Answer: A

    Solution :

               It is Wurtz reaction in which hydrocarbon formed when alkyl halide react with Na metal in dry ether.                    \[\underset{\text{2 chloro propane}}{\mathop{C{{H}_{3}}-\overset{Cl\ }{\mathop{\overset{|}{\mathop{C}}\,H}}\,-C{{H}_{3}}}}\,+\underset{\begin{smallmatrix}  \text{chloro} \\  \text{methane} \end{smallmatrix}}{\mathop{C{{H}_{3}}Cl}}\,+2Na\xrightarrow{\text{ether}}\]   \[\underset{\text{2 methyl propane}}{\mathop{C{{H}_{3}}-\overset{C{{H}_{3}}\ }{\mathop{\overset{|}{\mathop{C}}\,H-}}\,C{{H}_{3}}+2NaCl}}\,\]


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