MGIMS WARDHA MGIMS WARDHA Solved Paper-2015

  • question_answer
    Photochemical oxidants, i.e. PAN or PBN are formed by

    A)  action of nitrogen oxides on hydrocarbons in presence of sunlight

    B)  action of\[C{{O}_{2}}\]on hydrocarbons in presence of sunlight

    C)  action of hydrogen sulphide on hydrocarbon in presence of sunlight

    D)  None of the above

    Correct Answer: A

    Solution :

                    \[RCHO\xrightarrow[{}]{\overline{O}H}\underset{Acyl\text{ }radical\text{ }Peroxy,\text{ }acyl\text{ }radical}{\mathop{R-\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{{{C}^{\bullet }}}}\,\xrightarrow[{}]{{{O}_{2}}}\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{RCO{{O}^{\bullet }}}}\,}}\,\] \[\underset{PAN}{\overset{\downarrow N{{O}_{2}}}{\mathop{\underset{\begin{smallmatrix}  || \\  O \end{smallmatrix}}{\mathop{R-COO{{N}_{2}}}}\,}}}\,\] \[{{C}_{6}}{{H}_{6}}CHO\xrightarrow[N{{O}_{2}}]{\overline{O}H/{{O}_{2}}}\underset{PBN}{\mathop{{{C}_{6}}{{H}_{5}}-\underset{\begin{smallmatrix}  |\,| \\  O \end{smallmatrix}}{\mathop{C}}\,-OON{{O}_{2}}}}\,\]


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