Given below are the characteristics of two reactions A and B. A proceeds with the absorption of heat energy while B proceeds with the evolution of heat energy. Identify the correction statement(s) out of the following.
P. A is an endothermic reaction
Q. A is an exothermic reaction
R. B is an endothermic reaction
S. B is an exothermic reaction

P and R

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P and S

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Q and R

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Q and S

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Solution

The correct option is B P and S
Reactions that involve the absorption of heat energy are called endothermic reactions while the reactions that involve the evolution of heat energy are called exothermic reactions.

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The correct option is B P and SReactions that involve the absorption of heat energy are called endothermic reactions while the reactions that involve the evolution of heat energy are called exothermic reactions.

The correct option is B P and S
Reactions that involve the absorption of heat energy are called endothermic reactions while the reactions that involve the evolution of heat energy are called exothermic reactions.