JEE Main & Advanced Chemistry Analytical Chemistry Question Bank Critical Thinking Analytical

  • question_answer
    To an acid solution of an anion a few drops of \[KMn{{O}_{4}}\] solution are added. Which of the following, if present will not decolourise the \[KMn{{O}_{4}}\] solution [MP PMT 1997]

    A) \[NO_{2}^{-}\]

    B) \[{{S}^{2-}}\]

    C) \[C{{l}^{-}}\]

    D) \[CO_{3}^{2-}\]

    Correct Answer: D

    Solution :

    Except \[CO_{3}^{--}\] all other ions are reduced by \[KMn{{O}_{4}}\] solution.


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