KcetHydrogen And Its CompoundsKCET 2018MCQ+1 / -02018Which of the following ions will cause hardness in water?A$\mathrm{Ca}^{2+}$B$\mathrm{Na}^{+}$C$\mathrm{Cl}^{-}$D$\mathrm{K}^{+}$Check AnswerClear SelectionReveal AnswerShow Explanation
