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BHU PMT BHU PMT (Screening) Solved Paper-2005

  • question_answer
    By which one of the following compounds both\[C{{H}_{4}}\]and\[C{{H}_{3}}C{{H}_{3}}\]can be prepared in one step?

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

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

    C)  \[C{{H}_{3}}C{{H}_{2}}I\]            

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

    Correct Answer: A

    Solution :

                     \[C{{H}_{3}}I+2[H]\xrightarrow[or\,Zn-Cu\,or\,{{C}_{2}}{{H}_{5}}OH]{Zn/HCl}\underset{Methane}{\mathop{C{{H}_{4}}+HI}}\,\] \[2C{{H}_{3}}I+2Na\xrightarrow[{}]{dry\,ether}\underset{Ethane}{\mathop{C{{H}_{3}}-C{{H}_{3}}}}\,+2NaI\] Therefore, from CH3l both methane and ethane can be prepared.


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