The temporary hardness of a water sample is due to compound X. Boiling – McqOptions

MCQOPTIONS

1.	The temporary hardness of a water sample is due to compound X. Boiling this sample converts X to compound Y. X and Y, respectively, are:
A.	Mg(HCO3)2 and Mg(OH)2
B.	Ca(HCO3)2 and Ca(OH)2
C.	Mg(HCO3)2 and MgCO3
D.	Ca(HCO3)2 and CaO
Answer» B. Ca(HCO3)2 and Ca(OH)2

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