A) Galena
B) Copper pyrite
C) Sphalerite
D) Argentite
Correct Answer: D
Solution :
[d] Leaching is the selective dissolution of the desired mineral leaving behind the impurities in a suitable dissolving agent e.g., Argentitie or Silver glance, \[A{{g}_{2}}S\] is an ore of silver. Silver is extracted from argentite by the mac-Arthur and Forest process (leaching process). \[A{{g}_{2}}S+4NaCN\to 2Na[Ag{{(CN)}_{2}}]+N{{a}_{2}}S\] \[4Au+8KCN+2{{H}_{2}}O+{{O}_{2}}\to \] \[4K[Au{{(CN)}_{2}}]+4KOH\]You need to login to perform this action.
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