The conversion of ${CaCO}_{3}$ into $CaO$ is an example of ____________ reaction.

decomposition

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combination

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double displacement

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displacement

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Solution

The correct option is A decomposition
The conversion of calcium carbonate ${(CaCO)}_{3}$ to calcium oxide $(CaO)$ 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:

${CaCO}_{3} (s) Heat ⟶ CaO (s) + {CO}_{2} (g)$

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