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The first step in the extraction of copper is :

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The first step in the extraction of copper is :
A. reduction of copper (I) oxide with copper (II) sulphide
B. reduction with iron
C. heating ore with coke
D. roasting of copper (I) sulphide
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Correct Answer - D
First step in the extraction of copper is the roasting of sulphide ore i.e. copper (i) sulphide.
`2Cu_(2)S+3O_(2) overset("heat") to 2Cu_(2)O+2SO_(2)`
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