To obtain chromium from chromic oxide $(Cr_2O_3)$,the method used is

Extraction of zinc from zinc blende is achieved by

Statement $I :$ Leaching of gold with cyanide ion in absence of air $/$ $O_2$ leads to cyano complex of $Au(III)$.
Statement $II :$ Zinc is oxidized during the displacement reaction carried out for gold extraction.
In the light of the above statements,choose the correct answer from the options given below.

In the metallurgy of copper,metallic copper is finally formed in the furnace by the reactions:

Lead is mainly extracted by

Which of the following is the correct match for $Ore - Process - Method$?