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Setting of plaster of paris is...

Setting of plaster of paris is

A

Oxidation with atmospheric `CO_(2)`

B

Combination with atmospheric `CO_(2)`

C

Dehydration

D

Hydration to yield another

Text Solution

Verified by Experts

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