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MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Inorganic ChemistryMetallurgyFlux Impurities slag

Which one of the following reactions represents a calcination reaction?

A.HgS + O₂ → Hg + SO₂

B.Ag₂S + NaCl → AgCl + Na₂S

C.CuCO₃. Cu(OH)₂ → CuO + CO₂ + H₂O

D.Al₂O₃ + NaOH → NaAlO₂ + H₂O✓ Correct

Explanation

Δ 3 2 2 Calcined 2 CuSO .Cu OH 2CuO+CO +H O →

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