In the Group analysis of cations, $\mathrm{Ba}^{2+} ~\&~ \mathrm{Ca}^{2+}$ are precipitated respectively as

In Group V of cation analysis, both Ba²⁺ and Ca²⁺ are precipitated by adding Na₂CO₃ or (NH₄)₂CO₃ solution. Ba²⁺ precipitates as BaCO₃ (white precipitate) and Ca²⁺ precipitates as CaCO₃ (white precipitate). Both form insoluble carbonates under these conditions, making the answer carbonate & carbonate.