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Plaster of Paris is hardened by:...

Plaster of Paris is hardened by:

A

Combining with water

B

Due to formation of gypsum

C

Due to formation of slaked lime

D

Both (a) and (b)

Text Solution

Verified by Experts

The correct Answer is:
D
Plaster of Paris is hardened by combining with water. On mixing with water it changes to gypsum giving a hard solid mass.
`CaCO_(2)(1)/(2) H_(2)O + 1(1)/(2)H_(2)O rarr CaSO_(4).2H_(2)O`
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