Assertion :In the smelting of copper ore coke is added in the blast furnace. Reason: Coke reduces, CuO into Cu.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
Smelting of the roasted copper ore in the blast furnace
Material required : (i) Roasted ore
(ii) Limestone
(iii) Coke (used as fuel)
(iv) Silica (used as flux)
(v) Limestone used to remove excess silica

Self-reduction happens in Bessemer converter reaction as

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

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

$F e O + S i O_{2} \to F e S i O_{3}$ (removed as slag)

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

self reduction:
$C u_{2} S + 2 C u_{2} O \to 6 C u + S O_{2}$

self-reduction takes place in the case of Copper.
Option c is correct.

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Similar questions

Assertion – The non-fusible impurities present in iron ore are removed by $C a C O_{3}$ .

Reason: $C a C O_{3}$ which decomposes into $C a O$ and $C O_{2}$ . The $C a O$ formed reacts with $S i O_{2}$ to remove silica

H_{2}

H e

(1 + \frac{P b}{R T})

H_{2}

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{SiO}_{2}

{CaCO}_{3}

CaO

{CaCO}_{3}

{SiO}_{2}

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