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CET Karnataka Medical CET - Karnataka Medical Solved Paper-2000

  • question_answer
    The brown ring test for \[N{{O}_{2}}\] and \[NO_{3}^{-}\] is due to the formation of complex ion with the formula:

    A)  \[{{[Fe{{({{H}_{2}}O)}_{6}}]}^{2+}}\]

    B)  \[{{[Fe(NO)\,\,{{(CN)}_{5}}]}^{2+}}\]

    C)  \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}\]

    D)  \[{{[Fe{{({{H}_{2}}O)}_{5}}{{(NO)}_{5}}]}^{2+}}\]

    Correct Answer: C

    Solution :

    The brown ring test for \[NO_{2}^{-}\] and \[NO_{3}^{-}\] is  due to formation of \[{{[Fe{{({{H}_{2}}O)}_{5}}NO]}^{2+}}\]


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