Benefaction is otherwise called
Smelting
Concentration
Magnetic seperation
Froth flotation
Mond process is used for the refining of
B
Ga
In
Ni
Heating of ores are called
Leaching
Calcination
Van Arkel method is used for the refining of
Zn
Zr
Ti
both a and c
The separation based on the difference in gravities of the ore and the gangue particle is called
Fractional distillation
Gravity separation
Froth floatation
Magnetic separation.
The depressant used in an ore containing ZnS and PbS is
KCN
NaOH
NaCl
NaCN
The slag formed in blast furnace is
CaO
CaCO3
CaSiO3
FeO
The technique very useful for low boiling metals like Zinc and Mercury is
Distillation
Liquation
The technique which is based on the differences in magnetic properties of the ore components is called
Zone refining
