Give the reaction involved during extraction of zinc from its ore by (a) roasting of zinc ore. (b) calcination of zinc ore. (c) reduction of zinc oxide.
a) (a) ZnCO₃ → ZnO + CO₂ (b) ZnCO₃ → ZnO + CO₂ (c) ZnO + C → Zn + CO
b) (a) ZnO → Zn + O₂ (b) ZnCO₃ → ZnO + CO₂ (c) ZnO + C → Zn + CO
c) (a) ZnCO₃ → ZnO + CO₂ (b) ZnO → Zn + O₂ (c) ZnO + H₂ → Zn + H₂O
d) (a) ZnO → Zn + O₂ (b) ZnCO₃ → ZnO + CO₂ (c) Zn + 2HCl → ZnCl₂ + H₂