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NEET2018ChemistryGeneral Principles and Processes of Isolation of MetalsActual

The first step in the extraction of copper is

Options

  1. Areduction of copper(I) oxidewith copper(I) sulphide
  2. Breduction with iron
  3. Cheating ore with coke
  4. Droasting of copper (I) sulphide.

Correct answer

D. roasting of copper (I) sulphide.

Step-by-step solution

First step in extraction of copper from ore is roasting of sulphide ore 2 Cu ₂ ~S _ (s) +3 O _ 2(g) 2 Cu ₂ O _ (s) +2 SO _ 2(g)

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