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Question

The setting of cement is

A
Rapid combustion reaction
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B
enzyme catalyzed reaction
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C
endothermic reaction
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D
exothermic reaction
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Solution

The correct option is D exothermic reaction
When water is added to cement, a series of simultaneous reactions take place. Most of these reactions are exothermic. Overall, the setting of cement is highly exothermic with the period of maximum heat evolution ranging between 11-20 hours.

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