Blister copper is extracted from copper pyrites. After removal of slag $\mathrm{FeSiO}_3$, blister copper is…

Blister copper is extracted from copper pyrites. After removal of slag $\mathrm{FeSiO}_3$, blister copper is obtained by
  1. self reduction
  2. reduction with $\mathrm{CO}$
  3. reduction with coke
  4. self oxidation

Solution

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Asked in: AP EAMCET 2018 (24 Apr Shift 2)

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