Write the reactions involved in th'e zone of reduction in blast furnace during extraction of iron.
Zone of reduction:-Carbon monoxide reduces ferric oxide to spongy iron (porous solid) at about 900 K.
Fe2O3 + 3CO → 2Fe + 3CO2
A small amount of ferric oxide is also reduced to iron by carbon.
Fe2O3 + 3C → 2Fe + 3CO