Question

hardness of water is of ______ types (a)two. b) three. c)four. d) five​

Answer 1

Answer:

two types

Explanation:

hardness of water is two types

1. permanent hardness

2. temporary hardness

Answer 2

Answer:

two types

Explanation:

they are the temporary and permanent hard water. permanent hard water is due to the presence of soluble salts of calcium and magnesium in the form of chlorides in the water. Whiles temporary hard water is due to the soluble salts of magnesium and calcium in the form of hydrogen carbonate, and this hardness can be removed by boiling.