Question

A solution containing a group-IV cation gives a precipitate on passing $H_{2}S$. A solution of this precipitate in dil.HCl produces a white precipitate with NaOH solution and bluish-white precipitate with basic potassium ferrocyanide. The cation is :

• A. $\mathrm{Co}{}^{2+}$
• B. $\mathrm{Ni}{}^{2+}$
• C. $\mathrm{Mn}{}^{2+}$
• D. $\mathrm{Zn}{}^{2+}$

Answer 1

Answer: (D)

Correct answer is (d) $\mathrm{Zn}{}^{2+}$