Which salts are excessively dissolved to make temporary hard water...? Mcqs

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Which salts are excessively dissolved to make temporary hard water...?

(A) CaSO4 and CaCl2

(B) KNO3 and KOH

(C) CaCO3 and Ca(OH)2

(D) Ca(HCO3)2 and Mg(HCO3)2

✅ Correct Answer: Ca(HCO3)2 and Mg(HCO3)2

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Source: This question is taken from the Everyday Science

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