Question:
Which of the following reactions occur during calcination?
(i) CaCO3 → CaO + CO2
(ii) 2FeS2 + 11/2 O2 → Fe2O3 + 4SO2
(iii) Al2O3.x H2O → Al2O3 + x H2O
(iv) ZnS + 3/2O2 → ZnO + SO2
Solution:
Option (i) and (iii) are the answers.
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