A metal which is refined by poling is
Poling is used for purification of metal which contain their own oxide as impurity, eg, Cu2O in Cu; SnO2 in Sn.
An ore of tin containing FeCrO4 is concentrated by
One of the following metals forms a volatile compound and this property is taken advantage for its extraction. This metal is
When a metal is to be extracted its ore, if the gangue associated with the ore is silica, then
Which statement is correct?
Flux is used to remove
The final step for the extraction of copper from copper pyrite in Bessemer converter involves the reaction.
Auto-reduction process is used in the extraction of
Among the following groups of oxides, the group containing oxides that cannot be reduced by carbon to give the respective metal is
van-Arkel method of purification of metals involves converting the metal to a
Wolframite ore is separate from tin stone ore by the process of