An endothermic reaction is one in which:

heat is converted into electricity

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heat is absorbed

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heat is evolved

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heat changes to mechanical work

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Solution

The correct option is B heat is absorbed
Any reaction involving overall heat absorption is known as endothermic reaction.
While, any reaction involving overall heat releasing of heat is known as exothermic reaction.
Hence answer is option $B$ .

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An endothermic reaction is one in which:

The correct option is B heat is absorbedAny reaction involving overall heat absorption is known as endothermic reaction.While, any reaction involving overall heat releasing of heat is known as exothermic reaction.Hence answer is option B.

The correct option is B heat is absorbed
Any reaction involving overall heat absorption is known as endothermic reaction.
While, any reaction involving overall heat releasing of heat is known as exothermic reaction.
Hence answer is option $B$ .