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AP EAMCET2010ChemistryGeneral Principles and Processes of Isolation of Metals

The chemical reaction that involves roasting process is

Options

  1. AFe ₂ O ₃+3 CO 2 Fe +3 CO ₂
  2. B2 Al + Fe ₂ O ₃ 2 Fe + Al ₂ O ₃
  3. C2 ZnS +3 O ₂ 2 ZnO +3 SO ₂
  4. DFeO + SiO ₂ FeSiO ₃

Correct answer

C. 2 ZnS +3 O ₂ 2 ZnO +3 SO ₂

Step-by-step solution

Roasting is the process of heating of sulphide ores in excess of air to convert them into oxides. Thus, reactions, 2 ZnS +3 O ₂ 2 ZnO +3 SO ₂ occurs during roasting process.

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