Which of the following salts is the main cause of permanent hardness of water?

Environment Studies (Science) (M.Phil./Ph.D.) 2022 Panjab University Entrance Exam With Answers

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37.

A: Magnesium Phosphate

B: Magnesium Oxalate

C: Magnesium Sulphate

D: Magnesium Carbonate

The answer is: C

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