\( \mathrm{Ca}, \mathrm{Ba} \) and \( \mathrm{Sr} \) ions are precipitated in fifth group as the...

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\( \mathrm{Ca}, \mathrm{Ba} \) and \( \mathrm{Sr} \) ions are precipitated in fifth group as their:
(a) Oxides
(b) Sulphates
(c) Carbonates
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