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KVPY2011ChemistryGeneral Principles and Processes of Isolation of Metals

In the conversion of zinc ore to zinc metal, the process of roasting involves.

Options

  1. AZnCO ₃ ZnO
  2. BZnO ZnSO ₄
  3. CZnS ZnO
  4. DZnS ZnSO ₄

Correct answer

C. ZnS ZnO

Step-by-step solution

2 ZnS +3 O ₂ 950^ C 2 ZnO +2 SO ₂ ZnS +2 O ₂ 950^ C ZnSO ₄ then 2 ZnSO ₄ 950^ C 2 ZnO +2 SO ₂+ O ₂

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