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Setting of plaster of paris is...

Setting of plaster of paris is

A

Oxidation with atmosphere oxygen

B

Combination with atmospheric `CO_(2)`

C

Dehydration

D

Hydration to yield another hydrate

Text Solution

Verified by Experts

The correct Answer is:
D
Setting of plaster of paris is exothermic process `CaSO_(4).1/2H_(2)O overset(H_(2)O)tounderset("Orthorhombic")(CaSO_(4).2H_(2)O) overset("Hardening")to underset("Gypsum")underset("Mono orthorhombic")(CaSO_(4).2H_(2)O)`
The setting is due to formation of another hydrate.
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