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Subjects
Science State Board
Class 8
Water
Potable Water and Water Pollution
1.
Hardness of water: Match the following
Exercise condition:
3
m.
Q.No.
List-I
List-II
1
.
More lather
Rain water
Soft water
Normal water
Hard water
2
.
Temporary hardness
Calcium chloride
Magnesium sulphate
Magnesium bicarbonate
Calcium sulphate
3
.
Permanent hardness
Magnesium bicarbonate
Calcium carbonate
Calcium bicarbonate
Calcium chloride
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