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QJEEAdv16Ch4d14: JEE Advanced 2016 Chemistry - Class 12 JEEAdv16Ch4d14 Solution: Extraction of copper from copper pyrite (CuFeS 2 ) involves

Extraction of copper from copper pyrite (CuFeS2) involves

Multiple Choice Options

  • A crushing followed by concentration of the ore by froth flotation
  • B removal of iron as slag
  • C self-reduction step to produce ‘blister copper’ following evolution of SO2
  • D refining of ‘blister copper’ by carbon reduction

Step-by-Step Verified Solution

(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.

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