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Extraction of gold and silver involves l...

Extraction of gold and silver involves leaching with `CN^(-)`ion.silver is later recovered by:

A

distillation

B

zone refining

C

displacement of Zn

D

liquation

Text Solution

Verified by Experts

The correct Answer is:
C
Zinc being more reactive than Au and Ag, displaces them from their solutions. It is Mac Arthur or cyanide process.
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MODERN PUBLICATION-GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS-COMPETION FILE (Objective Questions) (Multiple Choice Question from competitive examinations)
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