Teaching Haryana (HPSC) Assistant Professor Mock Test 2025 Chemical Sciences Transition Elements and Inner Transition Elements
Reaction of an aqueous solution of A with NH3 forms a pale green precipitate. Dissolution of this precipitate in excess NH3 gives B. Bubbling H2S gas into B results in the formation of a dark precipitate C. Reaction of C with dil. HNO3 gives A. The A, B, and C, respectively, are
1
A = NiSO4, B = [Ni(NH3)6]SO4, C = NiS
2
A = FeCl3, B = [Fe(NH3)6]Cl3, C = FeS
3
A = CuSO4, B = [Cu(NH3)4]SO4, C = CuS
4
A = Zn(NO3)2, B = Zn(NH3)42, C = ZnS
5
Question Not Attempted