Fewpal
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Which of the following processe(s) occur(s) during the extraction of copper from chalcopyrites ? 

(A) Froth floatation 

(B) Roasting 

(C) Bessemerisation 

(D) Leaching

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Best answer

Corrrect option is (ABC)

(A) Froth floatation 

(B) Roasting 

(C) Bessemerisation

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