Question

Hardness of water is due to the presence of salts of

A Potassium Correct Answer Incorrect Answer
B Chlorine Correct Answer Incorrect Answer
C Magnesium Correct Answer Incorrect Answer
D Boron Correct Answer Incorrect Answer

Solution

The hardness of water is primarily due to the presence of calcium and magnesium salts, commonly in the form of calcium carbonate (CaCO3) and magnesium carbonate (MgCO3). Therefore, the correct answer is not among the provided options.

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