The following reaction occurs in the Blast Furnace where iron ore is reduced to iron metalFe2O3s+3COg→2Fel+3CO2gUsing the Le Chatelier's principle,predict which one of the following will not distrub the equilibrium ?

Addition or removal of substances which are not present in equilibrium constant expression will not disturb position of equilibrium.As Ferric oxide is not present in equilibrium constant expression because it is in solid state, its addition will not disturb position of equilibrium