Questions
Plaster of paris hardens by
detailed solution
Correct option is C
When plaster of paris is mixed with water plaster of paris takes up water of crystallization to form calcium sulphate dihydrate.
This sets to a hard mass which is monoclinic calcium sulphate dihydrate which is also called as gypsum. Thus gypsum is the final product of setting of plaster of paris.
The reaction is as follows:
Therefore plaster of paris hardens by combining with water.
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