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  4. Extraction of gold and silver involves leaching with textC textN- ion. Silver or gold is later recovered by:

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Q. Extraction of gold and silver involves leaching with $\text{C}\text{N}^{-}$ ion. Silver or gold is later recovered by:

NTA AbhyasNTA Abhyas 2022General Principles and Processes of Isolation of Elements

Solution:

Zinc metal can displace $Ag$ and $Au$ as $Zn$ being more reactive than $Ag$ and $Au$. The following reactions are involved in the extraction of gold or silver from their native ores.
From Native ore,
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