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Which among this is not an exothermic reaction?

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in Fluid Mechanics by (118k points)
Which among this is not an exothermic reaction?

(a) Combustion reaction

(b) Neutralization reaction

(c) Thermite reaction

(d) Evaporating liquid water

The question was asked in final exam.

This key question is from First Law of Thermodynamics in portion Fluid Dynamics of Fluid Mechanics

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Best answer
Right answer is (d) Evaporating liquid water

To elaborate: Exothermic reaction is a reaction that releases energy by either light or heat. It is the opposite of endothermic reactions. In this case, evaporating liquid water is an endothermic reaction. Endothermic reaction is a reaction in which the system absorbs heat from its surroundings.

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