JEE Main & Advanced Chemistry Hydrocarbons Question Bank Alkane

  • question_answer Methane and ethane both can be obtained in single step from [CPMT 1974; MP PET 1995; AFMC 1998, 2000; BHU 2005]

    A) \[C{{H}_{3}}I\]

    B) \[{{C}_{2}}{{H}_{5}}I\]

    C) \[C{{H}_{3}}OH\]

    D) \[{{C}_{2}}{{H}_{5}}OH\]

    Correct Answer: A

    Solution :

               \[C{{H}_{3}}I+2H\xrightarrow{Zn/HCl}C{{H}_{4}}+HI\] \[C{{H}_{3}}I+2Na+IC{{H}_{3}}\underset{\text{Ether}}{\mathop{\xrightarrow{\text{Dry}}}}\,C{{H}_{3}}-C{{H}_{3}}+2NaI\]


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