When a salt is heated with dil `H_(2)SO_(4)` and `KMnO_(4)` soin the pink colour of `KMnO_(4)` is dicharged the mixture may cont

When a salt is heated with dil `H_(2)SO_(4)` and `KMnO_(4)` soin the pink colour of `KMnO_(4)` is dicharged the mixture may contain
A. Sulphite
B. Carbonate
C. Nitrate
D. Bicarbotate

When a salt is heated with dil `H_(2)SO_(4)` and `KMnO_(4)` soin the pink colour of `KMnO_(4)` is dicharged the mixture may contain

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