Assertion: Decomposition reactions requires energy to breakdown the reactants.

Reason: Either of the heat, light or electricity energy is required in decomposition reactions.

Choose the correct option out of the following.

Both assertion and reason are correct, and reason is the correct explanation of assertion.

The correct answer is option 1. Both assertion and reason are correct, and reason is the correct explanation of assertion.

The decomposition reactions require energy either in the form of heat, light or electricity for breaking down the reactants. Reactions in which energy is absorbed are known as endothermic reactions.