(i) CaCO3→CaO+CO2
(ii) 4FeS2+11O2→2Fe2O3+8SO2
(iii) 2Al(OH)3→Al2O3+3H2O
(iv) Cu2S+2CuO→4Cu+SO2
Correct Answers:
(i) CaCO3→CaO+CO2
(iii) 2Al(OH)3→Al2O3+3H2O
Explanation:
Reactions Involved in the Calcination process:-
CaCO3→CaO+CO2
2Al(OH)3→Al2O3+3H2O