1. Smelting
2. Calcination
3. Benefication
4. Roasting
Benefication
1. Cuprous oxide
2. Cuprous sulphide
3. Ferrous sulphide
4. Ferrous oxide
Ferrous oxide
1. Volatile unstable compound
2. Volatile stable compound
3. Non-volatile compound
4. None of the above
Volatile stable compound
1. Fe2O3
2. NiO. CuO
3. ZnO .CoO
4. ZnO. NiO
ZnO .CoO
1. Anode
2. Cathode
3. Anode or cathode
4. Electrolyte
Anode
1. Zone refining
2. Mond's process
3. Van Arkel process
4. Cupellation
Mond's process
1. CaSiO3
2. FeSiO3
3. Ca3(P4)3
4. MgSiO3
Ca3(P4)3
1. Siderite
2. Dolomite
3. Limonite
4. Malachite
Dolomite
1. Fe
2. Al
3. Si
4. Ca
Al
1. Mg
2. Al
3. Fe
4. Cu
Cu