Question

Select the incorrect statement from the following option.
a) Permanent hardness is due to dissolved chlorides and sulphates of calcium and magnesium
b) It can be removed by mere boiling of water
c) It is also known as non-alkaline hardness
d) The difference between the total hardness and the alkaline hardness gives the non-alkaline hardness​

Answer 1

Answer:

Explanation:

A

Answer 2

Answer:

Option A is the correct answer.

Explanation:

• Hardness of the water is defined as water which contains high minerals in it. the guidelines of hard water given as 0-60mg/L.

• The permanent hardness of water is which contains sulphates and chlorides which on boiling or filtration the contents can not be removed.

• The main reason for permanent hardness of water ca and mg.