$2 C u F e S_{2} + O_{2} \to C u_{2} S + 2 F e S + S O_{2}$
Which process of metallurgy of copper is represented by above equation?

Concentration

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Roasting

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Reduction

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Purification

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Solution

The correct option is B Roasting
Roasting is the process in which the ore in strongly heated in the presence of excess air.
In the extraction of copper consequent to crushing and concentration of the ore, it is heated in a reverberatary furnace.
Copper pyrites is oxidised and a part of sulphur in the ore is removed as sulphur dioxide.
$2 C u F e S_{2} + O_{2} \to C u_{2} S + 2 F e S + S O_{2}$
Copper pyrites

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Similar questions

- I

- II

\begin{matrix} List - I & List - II (I) N i Impure + 4 C O 330 K - -- \to N i (C O)_{4} 450 K - -- \to N i pure + 4 C O & (P) Leaching (II) 4 A u + 4 N a C N + O_{2} + 2 H_{2} O - ---- \to - 4 K O H & (Q) Mond's reduction 4 N a [A u (C N)_{2}] Soluble Z n - \to 2 N a [Z n (C N)_{4}] + 4 A u (III) T i C l_{4} + 2 M g \to T i + 2 M g C l_{2} & (R) Auto reduction (IV) 2 C u_{2} S + 30_{2} \to 2 C u_{2} O + 2 S O_{2} & (S) Kroll process C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2} \end{matrix}

-I

-II

{K M n O}_{4} + {C u}_{2} S ⟶ {M n}^{2 +} + {C u}^{2 +} + {S O}_{2}

{C u}_{2} S

Name the process used for the formation of blister $C u$ by following reaction :(unbalanced reactions)

$2 C u_{2} S + 3 O_{2} \to C u_{2} O + S O_{2}$

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

A : F e O + S i O_{2} \to F e S i O_{3}

B : 2 F e S + 3 O_{2} \to 2 F e O + 2 S O_{2}

C : 2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2}

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

Select reactions actually taking place :

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

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