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NEETChemistryGeneral Principles and Processes of Isolation of Metals

Why is sulfide ore of copper heated in a furnace after mixing with silica?

Options

  1. AHeating with silica helps in the reduction of copper oxide to metallic copper.
  2. BSilica prevents the oxidation of copper sulfide during heating.
  3. CHeating with silica removes impurities by adsorption.
  4. DIron oxide present as impurity in sulfide ore of copper forms slag which is iron silicate and copper is produc

Correct answer

D. Iron oxide present as impurity in sulfide ore of copper forms slag which is iron silicate and copper is produc

Step-by-step solution

Correct Option is : (D) Iron oxide present as impurity in sulfide ore of copper forms slag which is iron silicate and copper is produced in the form of copper matte.

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