NEET Sample Paper NEET Sample Test Paper-7

  • question_answer
    Both methane and ehtane can be prepared in one step from

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

    B)  \[C{{H}_{3}}Br\]

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

    D)  \[C{{H}_{3}}OH\]

    Correct Answer: B

    Solution :

    \[C{{H}_{3}}Br\xrightarrow{Zn-Cu\,\,couple,\,{{C}_{2}}{{H}_{5}}OH}C{{H}_{4}}+HBr\] \[2C{{H}_{3}}Br+2Na\xrightarrow[Wurtz\,reaction]{\Delta }{{C}_{2}}{{H}_{6}}+2NaBr\]


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