Heating of calcium carbonate is an example of a ____ reaction.

displacement

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combination

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decomposition

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double displacement

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Solution

The correct option is C decomposition
In a decomposition reaction, the reactant breaks into two or more simple products. Heating of calcium carbonate results in formation of calcium oxide and carbon dioxide. The reaction involved is:
${CaCO}_{3} (s)^{heat - - \to} CaO(s) + {CO}_{2} (g)$
Since it decomposes to give simpler products so it is a decomposition reaction.

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