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(A) The correct option is $A$.Extraction of silver is achieved by the initial complexation of the ore (argentite,$Ag_2S$) with cyanide ion $(CN^-)$ to

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$CN^{-}$ and $Zn$

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(A) The correct option is $A$.Extraction of silver is achieved by the initial complexation of the ore (argentite,$Ag_2S$) with cyanide ion $(CN^-)$ to form a soluble complex,followed by reduction with zinc $(Zn)$.This process is known as the Mac-Arthur Forrest cyanide process.The chemical reactions are:$Ag_2S + 4CN^- \rightarrow 2[Ag(CN)_2]^- + S^{2-}$$2[Ag(CN)_2]^- + Zn \rightarrow [Zn(CN)_4]^{2-} + 2Ag$Here,$X = CN^-$ and $Y = Zn$.

Extraction of silver is achieved by initial complexation of the ore (argentite) with $X$ followed by reduction with $Y$. $X$ and $Y$,respectively are

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