KCET2018ChemistryHydrogen
Which of the following ions will cause hardness in water?
Options
- A( Ca ²⁺ )
- B( Na ⁺ )
- C( Cl ⁻ )
- D( K ⁺ )
Correct answer
A. ( Ca ²⁺ )
Step-by-step solution
Presence of calcium and magnesium salts of hydrogen carbonates, chlorides and sulphates makes water Hard