The formula of dichlorobis (urea) copper (II) is
[Cu{O=C(NH2)2Cl}]Cl
[CuCl2{O=C(NH2)2}2]
[Cu{O=C(NH2)2}]Cl2
[CuCl2{O=C(NH2)2H2}]
The number of geometrical isomers of the complex [Co(NO2)3(NH3)3] is
4
0
2
3
Which of the following will give maximum number of isomers ?
[Co(NH3)4Cl2]
[Ni(en)(NH3)4]2+
[Ni(C2O4)(en)2]2-
[Cr(SCN)2(NH3)4]+
Which one of the following statement is not correct?
Mercury (II) iodide dissolves in excess of potassium iodide solution
Tin (IV) chloride is made by dissolving tin solution in concentrated hydrochloric acid
Zinc dissolves in sodium hydroxide solution
Carbon monoxide reduces iron (III) oxide to iron
In the separation of Cu2+ and Cd2+ of IInd group in qualitative analysis of cations, tetrammine copper (II) sulphate and tetrammine cadmium (II) sulphate react with KCN to form the corresponding cyano complexes, which one of the following pairs of the complexes and their relative stability enables the separation of Cu2+ and Cd2+ ?
K3[Cu(CN)4] : less stable and K2[Cu(CN)4] : more stable
K3[Cu(CN)4] : more stable and K2[Cd(CN)4] : less stable
K2[Cu(CN)4] : less stable and K2[Cd(CN)4] : more stable
K2[Cu(CN)4] : more stable and K2[Cd(CN)4] : less stable
Which statement is incorrect ?
Ni(Co)4-tetrahedral, paramagnetic
[Ni(CN)4]2- square planar, diamagnetic
Ni(CO)4-tetrahedral, diamagnetic
[Ni(Cl)4]2- tetrahedral, paramagnetic
Coordination number of Ni in [Ni(C2O4)3]4- is
6
IUPAC name of [Pt(NH3)3 (Br) (NO2)CI] Cl is
triamminebromochloronitroplatinum chloride
triamminebromonitrochloroplatinum chloride
triamminechlorobromonitroplatinum chloride
triamminenitrochlorobromoplatinum chloride
The complex ion [Co(NH3)6]3+ is formed by sp3d2 hybridisation. Hence, the ion should posses
octahedral geometry
tetrahedral geometry
square planar geometry
tetragonal geometry
