Q

Exothermic reaction is a reaction in which:

RRB Group D, 1-Nov-2018 S-2 2018
✓ Answer: A Heat is evolved
In an exothermic reaction, energy is released in the form of heat to the surroundings. This means that the products of the reaction have lower energy than the reactants, resulting in a temperature increase in the surrounding environment. Combustion and many oxidation reactions are common examples of exothermic reactions.
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