In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?
In isolation of which one of the following metals from their ores, the use of cyanide salt is not commonly involved?
Option 1 - <p>Zinc</p>
Option 2 - <p>Gold</p>
Option 3 - <p>Silver</p>
Option 4 - <p> Copper</p>
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8 months ago
Correct Option - 4
Detailed Solution:
KCN is used as depressant for ZnS. While Au and Ag, cyanide process (leaching) is used.
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