Search SchoolNGR

Wednesday, 01 April 2026
Register . Login

Hardness of water is mainly due to the presence of

Hardness of water is mainly due to the presence of
Take Free Practice Test On 2026 JAMB UTME, Post UTME, WAEC SSCE, GCE, NECO SSCE
  • A Calcium hydroxide or magnesium hydroxide
  • B Calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI)
  • C Sodium hydroxide or magnesium hydroxide
  • D Calcium chloride or sodium chloride salts
Correct Answer: Option B
Explanation:
Salts of Calcium and Magnesium are responsible for hardness of water. Bicarbonates, Carbonates, Chlorides and Sulfates of Calcium and Magnesium causes temporary and permanent hardness.

Share question on: