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When water boilers are used for long period of ... - JAMB Chemistry 2005 Question

When water boilers are used for long period of time, the solid substances left behind as scale are
A
magnesium trioxosilicate (IV) and rust
B
magnesium trioxosilicate (IV) and calcium tetraoxosulphate (VI)
C
clay and magnesium troxosulphate (IV)
D
clay and rust
correct option: a
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