Silver can be obtained from silver glance by:

from floatation followed by polling

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leaching by

N a C N

followed by thermal reduction

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leaching by

(N a C N + O_{2})

followed cupellation

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None of these

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Solution

The correct option is C leaching by $N a C N$ followed by thermal reduction
Silver is extracted from ${A g}_{2} S$

The process of extraction is called cyanide process. The ore is crushed, concentrated & treated with $N a C N$ solution followed by $Z n$ dust.

$A g S + 4 N a C N ⟶ 2 N a [{A g (C N)}_{2}] + {N a}_{2} S$

$Z n + 2 N a [A g {(C N)}_{2}] ⟶ {N a}_{2} [{Z n (C N)}_{4}] + 2 A g$

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Similar questions

N a C N

N a_{2} [Z n (C N)_{4}]

A g

S i O_{2}

S i O_{2}

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