In zone refining method, the molten zone
Contains impurities
Contains purified metal only
Contains more impurity than the original metal
Moves the either side
The process of converting hydrated alumina into anhydrous alumina is called
Roasting
Smelting
Dressing
Calcination
Gravity separation process is used for the concentration of
Calamine
Haematite
Chalcopyrite
Bauxite
The ore that is concentrated by forth floatation process is
Cinnabar
Malachite
Zincite
Bessemer converter is used for the preparation of
Pig iron
Steel
Wrought iron
Cast iron
Important ore of Mg is
Gypsum
Carnallite
Magnatide
