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Science CBSE Homework Assignments
Class 10
Acids, Bases and Salts
Water of crystallization and Plaster of Paris
1.
Gypsum and Plaster of Paris
Question:
4
m.
1
.
Sodium salt produces gypsum when mixed with water.
False
True
2
.
When you mix hydrochloric acid with water, you get a lot of heat.
False
True
3
.
In laboratories, calcium sulphate hemihydrate is used to seal the air gaps in the apparatus.
False
True
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