Which of the following statement is correct regarding Cu-extraction?

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Blister formed in the blister Cu is due to dissolved ${CO}_{2}$

During partial roasting, ${Cu}_{2} S$ remains almost unaffected

In the smelting step, carbon reduction takes place

In Bessemer converter, only self reduction occur, not slag formation

answer is B.

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Detailed Solution

Regarding Cu-extraction during partial roasting, ${Cu}_{2} S$ remains almost unaffected

In the Bessemer converter during the extraction of copper, metal is created as a result of self-reduction as,

${Cu}_{2} S + 2 {Cu}_{2} O \to 6 Cu + {SO}_{2}$

Hence, option B is correct.

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