Which of the following salts is responsible for temporary and permanent hardness of water respectively?

Options

A. `Mg(HCO_(3))_(2)and Na_(2)SO_(4)`
B. `Ca(HCO_(3))_(2) and MgCl_(2)`
C. `MgSO_(4)and Mg(HCO_(3))_(2)`
D. `CaCl_(2) and CaSO_(4)`

Answer

B

Explanation

Bicarbonates of calcium and magnesium and chlorides and sulphates of calcium and magnesium are responsible for temporary and permanent hardness respectively.