GK
CHEMISTRY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Permanent hardness of water is due to the presence of?
|
|
Calcium sulphate
|
|
|
Sodium bicarbonate
|
|
|
Calcium bicarbonate
|
|
|
Magnesium bicarbonate
|
Explanation:
Detailed explanation-1: -Permanent hardness in water is due to the presence of the chlorides, nitrates and sulphates of calcium and magnesium. It is not precipitated by boiling. These minerals in water can cause some everyday problems.
Detailed explanation-2: -It has many uses in industry. All forms are white solids that are poorly soluble in water. Calcium sulfate causes permanent hardness in water.
Detailed explanation-3: -Yes, Calcium Chloride ( CaCl 2 ) will cause hardness in water. This is because all water soluble salts of calcium are known to contribute to water hardness.
There is 1 question to complete.