Extraction of Al from bauxite is carried out by variousstages in Hall's process which involves I removal of sand and heavier impurities by gravityseparation method. II. removal of magnetic impurities by magneticseparator. III. fusing the concentrated finely divided ore withNa_2CO_3 and CaCO_3 and then extracting with H_2O. IV. ignition at 1100^@C. V. passing CO_2 Correct order of these steps are

Extraction of Al from bauxite is carried out by variousstages in Hall'

1.	Extraction of Al from bauxite is carried out by variousstages in Hall's process which involves I removal of sand and heavier impurities by gravityseparation method. II. removal of magnetic impurities by magneticseparator. III. fusing the concentrated finely divided ore withNa_2CO_3 and CaCO_3 and then extracting with H_2O. IV. ignition at 1100^@C. V. passing CO_2 Correct order of these steps are
Answer» I,II,III,V,IV II,I,III,V,IV V,IV,III,I,II I,III,V,IV,II Solution :Magnetic IMPURITIES should be separated before gravity separation as it involves `H_2O`.