In the group analysis of cations, $Ba^{2+}$ and $Ca^{2+}$ are precipitated respectively as

Among $Fe^{3+}$, $Pb^{2+}$, $Cu^{2+}$, and $Mn^{2+}$, identify the one that gets precipitated out while passing $H_2S$ gas in the presence of $NH_4OH$ as a group reagent. The highest possible oxidation state of the corresponding metal is:

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$Fe(OH)_3 \downarrow + NaOH(\text{excess}) \longrightarrow \text{No reaction}$

An aqueous solution of an inorganic salt on treatment with $HCl$ gives a white precipitate. This solution contains

Which ion$(s)$ precipitate when an oxalate solution is added to a mixture of $Ba^{2+}$,$Sr^{2+}$,and $Ca^{2+}$?

Aqueous solution of which of the following cation gives a precipitate with potash alum?