question_answer

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 : [JEE Online 08-04-2017]

A) \[M{{n}^{2+}}\]                               

B) \[Z{{n}^{2+}}\]

C) \[N{{i}^{2+}}\]                                  

D) \[C{{o}^{2+}}\]

Correct Answer: B

Solution :