MetallurgyHard
Question
Which of the following reaction (s) occurs during calcination?
Options
A.CaCO3 → CaO + CO2
B.4FeS2 + 11O2 → 2Fe2O3 + 8SO2
C.2Al(OH)3 → Al2O3 + 3H2O
D.CuS + CuSO4 → 2Cu + 2SO2
Solution
(A), (C) Heating of carbonates and hydroxide ores in absence of air to convert into their corresponding oxides is called calcination.
(B) Heating of sulphide in presence of air or O2 to convert in to oxides is called roasting.
(D) This reaction represents the self reduction.
(B) Heating of sulphide in presence of air or O2 to convert in to oxides is called roasting.
(D) This reaction represents the self reduction.
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