Hardness of water is due to the presence of – McqOptions

MCQOPTIONS

1.	Hardness of water is due to the presence of
A.	Sodium and chloride ions
B.	Calcium and Magnesium ions
C.	Strontium and Potassium ions
D.	Potassium and Nitrate ions
Answer» C. Strontium and Potassium ions

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