sblock Elements 1 Question 20
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38. The temporary hardness of water is due to calcium bicarbonate can be removed by adding
======= ####38. The temporary hardness of water is due to calcium bicarbonate can be removed by adding
3e0f7ab6f6a50373c3f2dbda6ca2533482a77bed (a) $\mathrm{CaCO}_{3}$
(b) $\mathrm{Ca}(\mathrm{OH})_{2}$
(c) $\mathrm{CaCl}_{2}$
(d) $\mathrm{HCl}$
$(1979,1 \mathrm{M})$
Objective Questions II
(One or more than one correct option)
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Solution:
- Lime treatment remove bicarbonate hardness by forming insoluble $\mathrm{CaCO}_{3}$ as
$\mathrm{Ca}\left(\mathrm{HCO}{3}\right){2}+\mathrm{Ca}(\mathrm{OH}){2} \longrightarrow 2 \mathrm{CaCO}{3} \downarrow+2 \mathrm{H}_{2} \mathrm{O}$
