Question

Which among the following methods can be used to remove the permanent hardness in water due to calcium or magnesium sulphates?

[A]Sulphonate method [B]Nitrate method [C]Zeolite method [D]None of these

Answer 1

Answer:

Explanation:

 [C]

Zeolite method  

can be used to remove the permanent hardness in water due to calcium or magnesium sulphates.

Answer 2

Answer

Zeolite methods

Explanation

Hardness of water means water which does not form leather with soap .

The hardness of water can be removed in the following way :-

temporary hardness:-it is removed easily by heating

permanent hardness:-permanent hardness can be removed by the process called

(EDTA) ethylene diamine Tetra acetic acid.

Zeolite methods too

to remove hardness of water means remove the quantity of salts of Ca and Mg sulphate .