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Tardigrade
Question
Chemistry
Setting of plaster of Paris involves
Q. Setting of plaster of Paris involves
2023
224
The s-Block Elements
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A
the oxidation with atmospheric oxygen.
4%
B
the removal of water to form anhydrous calcium sulphate.
53%
C
the hydration to form the orthorhombic form of gypsum.
43%
D
the reaction with atmospheric carbon dioxide gas
0%
Solution:
2
C
a
S
O
4
.
H
2
O
Setting
+
H
2
O
(orthorhombic gypsum)
C
a
S
O
4
.2
H
2
O