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JEE Main202127 Jul 2021Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

The addition of silica during the extraction of copper from its sulphide ore :-

Options

  1. Aconverts copper sulphide into copper silicate
  2. Bconverts iron oxide into iron silicate
  3. Creduces copper sulphide into metallic copper
  4. Dreduces the melting point of the reaction mixture

Correct answer

B. converts iron oxide into iron silicate

Step-by-step solution

Silica is used to remove FeO impurity from the ore of copper

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