permanent hardness of water is due to the presence of | Examsbook

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1255 0

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

1
Calcium sulphate
2
Calcium bicarbonate
3
Sodium bicarbonate
4
Magnesium bicarbonate

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Answer : 1. "Calcium sulphate"
Explanation :
Answer: A) Calcium sulphate Explanation:

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