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In the metallurgy of copper blister copper is obtained from

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Blast furnace

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answer is C.

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Detailed Solution

Blister copper is a form of impure copper that is obtained in the self-reduction process during bessemerization.

The following reaction takes place in a furnace :

$2 {Cu}_{2} O + {Cu}_{2} S ⟶ 6 Cu + {SO}_{2}$

The molten metal is cooled in sand molds SO₂ escapes. The resultant impure copper metal is known as "Blister copper".

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