1) Fe3+ is reduced to Fe2+ by using A) $ H_{2}O_{2}$ in presence of NaOH B) $ Na_{2}O_{2}$ in water C) $ H_{2}O_{2}$ in presence of $H_{2}SO_{4}$ D) $ Na_{2}O_{2}$ in presence of $H_{2}SO_{4}$ Answer: Option A,BExplanation:H2O2 is alkaline medium acts as a reducing agent, reduces Fe3+ to Fe2+. In an acidic medium, the same H2O2 oxidises Fe2+ to Fe3+
