Combustion reaction of coal is a/an __________ reaction.

exothermic

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auto-catalytic

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endothermic

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None of these

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Solution

The correct option is A exothermic
Combustion reaction of coal is an exothermic reaction as heat is evolved in the reaction. In this reaction, carbon reacts with oxygen to give carbon dioxide and heat. Reactions in which heat is released along with the formation of products are called exothermic chemical reactions.

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