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In the extraction of Ag, Zn is removed f...

In the extraction of Ag, Zn is removed from (Zn-Ag) alloy through

A

Cupellation

B

Fractional crystallization

C

Distillation

D

Electrolytic refining

Text Solution

Verified by Experts

The correct Answer is:
D
The extraction of Ag using (Zn – Ag) alloy is called Parke’s process.
As zinc is volatile at `920^(@)` while Ag is not. Thus, on heating (Zn + Ag) alloy, zinc vapourises while Ag remains at the bottom of the vessel. Hence, Zn is removed from (Zn-Ag) alloy through distillation.
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