metal
5. What type of reactions are represented by the following equations?
(i) CaCO ) CaO + CO,
(ii) CaO + H2O - Ca(OH)2
(iii) 2FeSO4 - Fe2O3 + SO2 + SO3
(10) NH4Cl - NH3 + HCI
(v) 2Ca + O2 - Cao
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