Temporary hardness may be removed from water by adding (a) \( \mathrm{Ca}(\mathrm{OH})_{2} \) (b...

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Temporary hardness may be removed from water by adding
(a) \( \mathrm{Ca}(\mathrm{OH})_{2} \)
(b) \( \mathrm{CaCO}_{3} \)
(c) \( \mathrm{CaSO}_{4} \)
(d) \( \mathrm{HCl} \)
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