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The reaction that does NOT define calcination is :(1) 2Cu2S + 3O2 + Δ →2Cu2O + 2SO2(2) ZnCO3 + Δ → ZnO + CO2 (3) Fe2O3 . XH2O + Δ → Fe2O3 + XH2O(4) CaCO3 . MgCO3 + Δ → CaO + MgO + 2CO2 |
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Answer» Correct option (1) 2Cu2S + 3O2 + Δ →2Cu2O + 2SO2 Explanation: (2Cu2S + 3O2 + Δ →2Cu2O + 2SO2 is roasting process as Cu2S is sulphide ore. |
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