JEE Advance - Chemistry (2016 - Paper 2 Offline - No. 1)

Extraction of copper from copper pyrite (CuFeS₂) involves

crushing followed by concentration of the ore by froth flotation

removal of iron as slag

self-reduction step to produce ‘blister copper’ following evolution of SO₂

refining of ‘blister copper’ by carbon reduction

(a) In the extraction of copper from copper pyrite (CuFeS₂), after crushing, concentration of ore is done by froth floatation process.

(b) Iron is removed as slag. JEE Advanced 2016 Paper 2 Offline Chemistry - Isolation of Elements Question 16 English Explanation 1

(c) Auto-reduction : JEE Advanced 2016 Paper 2 Offline Chemistry - Isolation of Elements Question 16 English Explanation 2

(d) Blister copper is finally purified by electrolytic refining.