MCQ
An example of a double salt is
- ABleaching powder
- BHypo
- C${K_4}[Fe{(CN)_6}]$
- ✓Potash alum
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$KMnO_4 + H_2SO_4+H_2O_2 \to KHSO_4 + MnSO_4 + O_2 + H_2O$
