Hardness of water is mainly due to the presence... - JAMB Chemistry 2011 Question
Hardness of water is mainly due to the presence of
A
calcium hydroxide or magnesium hydroxide
B
calcium trioxocarbonate (IV) or calcium tetraoxosulphate (VI)
C
sodium hydroxide or magnesium ydroxide
D
calcium chloride or sodium chloride salts
correct option: b
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