Hard water is water with high concentrations of dissolved...
Hard water is water with high concentrations of dissolved ions, in particular calcium and
magnesium ions
nitrogen ions
phosporus ions
helium ions
Correct answer is A
Hard water is water with high concentrations of dissolved ions, in particular calcium and magnesium ions
The commonest feature of reactions at the anode is that ...
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The IUPAC nomenclature of the structure is? ...
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Which of the following sugars is a product of the condensation of monosaccharides? ...