MCQ
The only cations present in a slightly acidic solutions are $Fe^{3+},\,Zn^{2+}$ and $Cu^{2+}$. The reagent that when added in excess to this solution would identify and separate $Fe^{3+}$ in one step is
- A$2\,M\,HCl$
- ✓$6\,M\,NH_3$
- C$6\,M\,NaOH$
- D$H_2S$ gas
