1.

To an acid solution of an anion a few drops of KMnO_(4) solution are added. Which of the following, if present will not decolourise the KMnO_(4) solution

Answer»

`NO_(2)^(-)`
`S^(2-)`
`CL^(-)`
`CO_(3)^(2-)`

SOLUTION :EXCEPT `CO_(3)^(-)` all other ions are reduced by `KMnO_(4)` solution.


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