Identify the reaction that doesn't take place during the smelting process of copper extraction.

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

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C u_{2} O + F e S \to C u_{2} S + F e O

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

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

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Solution

The correct option is C $2 C u_{2} S + 3 O_{2} \to 2 C u_{2} O + 2 S O_{2} ↑$
The reactions that don't take place during the smelting process of copper extraction is :

$2 F e S + 3 O_{2} \to F e O + 2 S O_{2} ↑$

This reaction occurs during roasting which comes before smelting.

Hence, the correct option is A.

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Similar questions

Q. Some of the reactions taking place during bessemerisation possibly are -

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 :

List I	List II
A. Calcination	a. $2 {C u}_{2} S + 3 O_{2} \to 2 {C u}_{2} O + 2 S O_{2}$
B. Roasting	b. ${F e}_{2} O_{3} \cdot n H_{2} O \to {F e}_{2} O_{3} + n H_{2} O$
C. Flux	c. ${C r}_{2} O_{3} + 2 A l \to {A l}_{2} O_{3} + 2 C r$
D. Thermite	d. $S i O_{2} + F e O \to F e S i O_{3}$

Match the following.

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}

Q. Among the reactions (A) - (D), the reaction(s) that does/do not occur in the blast furnace during the extraction of iron is/are:

(A) C a O + S i O_{2} \to C a S i O_{3}

(B) 3 F e_{2} O_{3} + C O \to 2 F e_{3} O_{4} + C O_{2}

(C) F e O + S i O_{2} \to F e S i O_{3}

(D) F e O \to F e + \frac{1}{2} O_{2}

When copper pyrite is roasted in excess of air, a mixture of $C u_{2} S$ and $F e O$ are formed. FeO is present as impurity. This can be removed as slag during Smelting. The flux added to form slag is

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Identify the reaction that doesn't take place during the smelting process of copper extraction.

The correct option is C 2Cu2S+3O2→2Cu2O+2SO2↑The reactions that don't take place during the smelting process of copper extraction is :2FeS+3O2→FeO+2SO2↑This reaction occurs during roasting which comes before smelting.Hence, the correct option is A.