Question

(18) Which of follow salt is
responsible for causing permanent
Hardness of water​

Answer 1

Answer:

Salts of Calcium and Magnesium are responsible for hardness of water. Bicarbonates, Carbonates, Chlorides and Sulphates of Calcium and Magnesium causes permanent hardness. These are the salts that cause permanent hardness of water. Permanent hardness of water is caused by salts that do not dissociate even upon heating

Answer 2

Explanation:

biocarbonates of calcium and magnesium chloride Sa sulphate of calcium and magnesium is a present for temporary and permanent hardness respectively

please mark at brainliest