Question

how many types of hard water are possible? what are they?​

Answer 1

Answer:

there are two types of hard water,the two types are temporary and permanent

Explanation:

Answer 2

Answer:

Two types of hard water are possible

First type is water with temporary hardness which contains Calcium any magnesium hydrogen carbonates ,it can removed by boiling or by Clarks process.

Second type is permanent hardness which contains chlorides and sulphates and can be removed by using ion exchange method ,Calvin's process,etc.