J & K CET Medical J & K - CET Medical Solved Paper-2010

  • question_answer
    The colorless gas that turns brown in air is

    A) \[NO\]                                 

    B) \[N{{O}_{2}}\]

    C) \[{{N}_{2}}{{O}_{4}}\]                                   

    D) \[{{N}_{2}}{{O}_{5}}\]

    Correct Answer: A

    Solution :

                    Nitric oxide, NO, a colorless gas, when comes in contact of air, turns brown due to its oxidation into\[N{{O}_{2}}\](which is brown in colour). \[\underset{colourless}{\mathop{2NO}}\,+\underset{(form\,air)}{\mathop{{{O}_{2}}}}\,\xrightarrow{{}}\underset{brown}{\mathop{2N{{O}_{2}}}}\,\]


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