Which of the following are examples of calcination?

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CuCO3⋅Cu(OH)2⟶2CuO+CO2+H2

2Ag+HCl+[O]⟶2AgCl+H2O

CaCO3⟶CaO+CO2

2ZnS+3O2⟶2Zn+2SO2

answer is A.

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Detailed Solution

During calcination volatile impurities are removed and carbonate ores decompose to give oxides.

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