MCQ
Hydrogen peroxide acts both as an oxidising and as a reducing agent depending upon the nature of the reacting species . In which of the following cases $H_2O_2$ acts as a reducing agent in acid medium?
- ✓$MnO_4^-$
- B$Cr_2O_7^{2-}$
- C$SO_3^{2-}$
- D$KI$
