Identify the correct option from the given table which represents the type of reactions
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Option C is the correct option..
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C is the correct answer.
When limestone is heated in a kiln, the calcium carbonate breaks down into calcium oxide and carbon dioxide. This type of reaction is called thermal decomposition. The process is called calcining. Once burnt limestone turns into calcium oxide which is known as quicklime. Also, Drying and calcination are endothermic processes that require heat to evaporate bulk moisture or decompose chemical compounds. Combustion processes involve exothermic oxidation or "burning" of the feed material. Here, limestone is heated at its early stage that is an exothermic reaction as the heat is supplied externally.
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