Cost iron is prepared from haematite . In most of the Cases ore needs no concentration,The ore is roasted to remove the volatile impurities ,During roasting the ,mass becomes porous Iron in the form of ferrous oxide os mixed with coke and heated in a blast furnace ,pig iron ios formed and is casted in the desired shape. One of the important advantages of rosting the iron ore is

Cost iron is prepared from haematite . In most of the Cases ore needs

1.	Cost iron is prepared from haematite . In most of the Cases ore needs no concentration,The ore is roasted to remove the volatile impurities ,During roasting the ,mass becomes porous Iron in the form of ferrous oxide os mixed with coke and heated in a blast furnace ,pig iron ios formed and is casted in the desired shape. One of the important advantages of rosting the iron ore is
Answer» WASTAGE of ORE in the form of `FeSiO_(3)` is avoided Was TAGE of one in the form of `Fe_(2)(SiO_(3))_(3)` is avided Ferrous oxide is REMOVED as mot=lten slag `FESiO_(3)` Ferric oxide is removed as molten slag `Fe_(2)(SiO_(3))_(3)` Answer :a