Question

The conversion of calcium carbonate into calcium oxide is an example of decomposition reaction

• A. Thermal
• B. Photolytic
• C. Electrolytic

Answer 1

The correct option is A Thermal

The conversion of calcium carbonate ${\text{(CaCO)}}_3$ to calcium oxide $\text{(CaO)}$ is an example of decomposition reaction. During the reaction, calcium carbonate decomposes on heating to form calcium oxide and carbon dioxide. The reaction takes place as follows:

${\text{CaCO}}_3\text{(s)}\stackrel{\text{Heat}}{⟶}\text{CaO (s)}+{\text{CO}}_2\text{(g)}$