Q. Permanent hardness of water is due to the presence of ?

  • (A) Calcium sulphate
  • (B) Calcium bicarbonate
  • (C) Sodium bicarbonate
  • (D) Magnesium bicarbonate
✅ Correct Answer: (A) Calcium sulphate

Published by Dharmendra Sir ⭐ 3.53K Points at 29-Aug-2022 06:59 pm in Chemistry

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