In the Group analysis of cations, $\mathrm{Ba}^{2+} \& \mathrm{Ca}^{2+}$ are precipitated respectively as
Select the correct option:
A
sulphide & sulphide
B
hydroxide & carbonate
C
carbonate & carbonate
D
chromate & sulphide
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Solution
To identify $\mathrm{Ba}^{2+} \& \mathrm{Ca}^{2+}$
Reagent $\left(\mathrm{NH}_4\right)_2 \mathrm{CO}_3+\mathrm{NH}_4 \mathrm{Cl}$ is used $\mathrm{BaCO}_3$ \& $\mathrm{CaCO}_3$ are obtained as precipitates
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