GAT PYQ 2025 Mock Test – II – Q56

Question:

Which one of the following salts is responsible for temporary hardness of water?

Which one of the following salts is responsible for temporary hardness of water?

Options:

  • Sulphates of calcium
  • Chlorides of magnesium
  • Bicarbonates of magnesium
  • Sulphates of magnesium
  • Sulphates of calcium
  • Chlorides of magnesium
  • Bicarbonates of magnesium
  • Sulphates of magnesium

Correct Answer: Bicarbonates of magnesium

Explanation:

Temporary hardness of water is due to the presence of bicarbonates of calcium and magnesium while permanent hardness of water is due to the presence of chlorides and sulphates of calcium and magnesium.

Temporary hardness of water is due to the presence of bicarbonates of calcium and magnesium while permanent hardness of water is due to the presence of chlorides and sulphates of calcium and magnesium.

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