The reaction that does NOT define calcinations is :
(A) Fe₂O₃ .XH₂O ----∆→ Fe₂O₃ + XH₂O (B) 2Cu₂S + 3O₂ → 2Cu₂O + 2SO₂
(C) ZnCO₃ ----∆→ ZnO + CO₂
(D) CaCO₃.MgCO₃ ----∆→ CaO + MgO + 2CO₂
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Answer:
B
Explanation:
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