When a salt is heated with dil. `H_2 SO_4` and `KMnO_4` solution, the pink colour of `KMnO_4` is discharged, the mixture containsA. sulphiteB. corbonateC. nitrateD. bicarbonate

When a salt is heated with dil. `H_2 SO_4` and `KMnO_4` solution, the

1.	When a salt is heated with dil. `H_2 SO_4` and `KMnO_4` solution, the pink colour of `KMnO_4` is discharged, the mixture containsA. sulphiteB. corbonateC. nitrateD. bicarbonate
Answer» `SO_(3)^(2-)` reduces `KMnO_(4)` and colour of `KMnO_(4)` is discharged `5SO_(3)^(2-) +2MnO_(4)^(-) + 6H^(+) to 2Mn^(2+) +5SO_(4)^(2-) +3H_(2)O`

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When a salt is heated with dil. `H_2 SO_4` and `KMnO_4` solution, the pink colour of `KMnO_4` is discharged, the mixture containsA. sulphiteB. corbonateC. nitrateD. bicarbonate

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