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Solution


Q.

In the Group analysis of cations, Ba2+ & Ca2+ are precipitated respectively as           [2026]
1 hydroxide & carbonate  
2 carbonate & carbonate  
3 chromate & sulphide  
4 sulphide & sulphide  

Ans.

(2)

To identify Ba2+ & Ca2+

Reagent (NH4)2CO3+NH4Cl is used BaCO3 & CaCO3 are obtained as precipitates.