RAJASTHAN ­ PET Rajasthan PET Solved Paper-2002

  • question_answer
    Which product is obtained, when\[{{C}_{2}}{{H}_{2}}\]passes from red hot copper tube?

    A)  \[{{C}_{6}}{{H}_{6}}\]          

    B)  Butadiene

    C)  \[CH\equiv C-CH=C{{H}_{2}}\]

    D)  \[{{C}_{2}}{{H}_{4}}\]

    Correct Answer: A

    Solution :

     \[\underset{acetylene}{\mathop{3{{C}_{2}}{{H}_{2}}}}\,\xrightarrow[Polymerisation]{\operatorname{Re}d\,hot\,Cu\,tube}\underset{benzene}{\mathop{{{C}_{6}}{{H}_{6}}}}\,\]


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