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Tardigrade
Question
Chemistry
When gypsum is heated to 393 K, it forms:
Q. When gypsum is heated to
393
K
, it forms:
2931
252
JEE Main
JEE Main 2020
The s-Block Elements
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A
C
a
S
O
4
⋅
0.5
H
2
O
53%
B
Dead burnt plaster
27%
C
C
a
S
O
4
⋅
5
H
2
O
9%
D
Anhydrous
C
a
S
O
4
10%
Solution:
Gypsum
C
a
S
O
4
.2
H
2
O
393
K
Plaster of paris
C
a
S
O
4
.
2
1
H
2
O
+
2
3
H
2
O