Which step is not involved in hydrometallurgical process?

C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}

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C u F e S_{2} + 2 H_{2} S O_{4} \to C u S O_{4} + F e S O_{4} + 2 H_{2} S

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C u S O_{4} + F e \to F e S O_{4} + C u

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C u C O_{3} + H_{2} S O_{4} \to C u S O_{4} + H_{2} O + C O_{2}

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Solution

The correct option is B $C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$
The following reaction is not a part of hydrometallurgical process.
$C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$
It is an auto reduction reaction.
The remaining reactions are hydro metallurgical processes in which the metals are extracted by converting their ores into aqueous solutions of metal compounds and reduction of these solutions using suitable reducing agents.

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Similar questions

What is the balanced form of the equation written below?

$C u + H_{2} S O_{4} \to C u S O_{4} + S O_{2} + H_{2} O$

C u S O_{4} + F e \to F e S O_{4} + C u

F e S O_{4} + Z n \to Z n S O_{4} + F e

C u + H_{2} S O_{4} \to C u S O_{4} + {S O}_{2} ↑ + H_{2} O

F e + H_{2} O \to {F e}_{3} O_{4} + H_{2} ↑

{C H}_{4} + O_{2} \to C O_{2} + H_{2} O

C u S O_{4} + F e \to F e S O_{4} + C u

F e S O_{4} + Z n \to Z n S O_{4} + F e

F e + {C u S O}_{4} ⇌ {F e S O}_{4} + C u

E_{F e / F e}^{o} = 0.44 V; E_{C u / {C u}^{2 +}}^{o} = - 0.337 V

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