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(D) The extraction of silver $(Ag)$ from its ore involves the following steps:$1$. The ore is treated with a dilute solution of $NaCN$ in the presence

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All of these

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(D) The extraction of silver $(Ag)$ from its ore involves the following steps:$1$. The ore is treated with a dilute solution of $NaCN$ in the presence of air $(O_2)$ to form a soluble complex:$4Ag + 8NaCN + 2H_2O + O_2 	o 4Na[Ag(CN)_2] + 4NaOH$Here,$A = Na[Ag(CN)_2]$ (Sodium dicyanoargentate$(I)$).$2$. The silver is then recovered from the complex by adding zinc $(Zn)$,which acts as a reducing agent:$2Na[Ag(CN)_2] + Zn 	o Na_2[Zn(CN)_4] + 2Ag$Here,$B = Na_2[Zn(CN)_4]$ (Sodium tetracyanozincate$(II)$).$3$. This process is a displacement reaction involving oxidation and reduction (redox process),where $Zn$ is oxidized and $Ag^+$ is reduced to $Ag$.Therefore,all the given options are correct.

Identify the correct statements for the following reaction sequence:
$Ag + NaCN (0.5\%) + H_2O + O_2 \to \text{Soluble complex} \xrightarrow{Zn} B (\text{complex}) + Ag$

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Identify the correct statements for the following reaction sequence:$Ag + NaCN (0.5\%) + H_2O + O_2 \to \text{Soluble complex} \xrightarrow{Zn} B (\text{complex}) + Ag$