Q. Permanent hardness of water may be removed by the addition of:

  • (A) Sodium Carbonate
  • (B) Alum
  • (C) Potassium Permanganate
  • (D) Lime
✅ Correct Answer: (A) Sodium Carbonate

Published by Kartik Sharma ⭐ 8.52K Points at 21-Jul-2021 02:42 am in Science

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