Chemistry > 2014 > 13
JAMB UTME
Water is said to be temporarily hard when it contains
A.
Ca(HCO3)2 and CaCO3 salts
B.
Mg(HCO3)2 and CaSO4 salts
C.
CaSO4 and Ca(HCO3)2 salts
D.
Ca(HCO3)2 and Mg(HCO3)2 salts
Answer: D
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