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carbon and its compounds — Science STD 10 — Question

Gujarat BoardEnglish MediumSTD 10Sciencecarbon and its compounds1 Mark
Question
which ions are present in hard water?
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Answer

  • Calcium $\left(\mathrm{Ca}^{2+}\right)$, magnesium $\left(\mathrm{Mg}^{2+}\right)$

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