Setting of cement is :

exothermic reaction

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endothermic reaction

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neither endothermic nor exothermic

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None of the above

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Solution

The correct option is B exothermic reaction
When water is mixed with cement to form a paste, reaction starts. In its pure form, the finely ground cement is extremely sensitive to water. The action of changing from a fluid state to a solid state is calledsetting.That is heat is liberated as the water reacts with the cement during the setting so its a exothermic process.

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