Question No:1

C is-trans-isomerism is found in square planar complexes of the molecular formula :(A and B are monodenate ligands):

[A] MA₄
[B] MA₃B
[C] MA₂B₂
[D] MAB₃



Question No:2

The oxidation state of Mo in its oxo-complex species [Mo₂O₄(H₂O) ₂ (C₂H₄)₂]^2– is:

[A] 2
[B] 3
[C] 4
[D] 5



Question No:3

The hydridisation and unpaired electrons in [Fe(H₂O)₆]²⁺ ion are :

[A] sp³d²; 4
[B] d²sp³; 3
[C] sp³d ; 4
[D] sp³d² ; 2



Question No:4

In which complex is the transition metal in zero oxidation state:

[A] [Co(NH₃)₆]Cl₂
[B] [Fe(H₂O)₆SO₄]
[C] [Ni(CO)₄]
[D] [Fe(H₂O)₃](OH) ₂



Question No:5

Formula of ferrocene is:

[A] [Fe(CN) ₆ ] ^4–
[B] [Fe(CN) ₆]³⁺
[C] [Fe(CO) ₅]
[D] [(C ₅H₅ ) ₂ Fe]



Question No:6

The hybrisation involved in [CoF ₆] ^3– is:

[A] d²sp³
[B] d³sp²
[C] dsp³
[D] sp³d²



Question No:7

Which of the following is complex:

[A] Trimethyl aluminium
[B] (C) Diethyl zinc
[C] (B) Ferrocene
[D] Nickel carbonyl



Question No:8

Which complex is likely to show optical activity:

[A] Trans-[Co(NH₃) ₄Cl ₂]⁺
[B] [Cr(H₂O) ₆]³⁺)
[C] Cis-[Co(NH₃ ) ₂ (en) ₂]³⁺
[D] Trans-[Co(NH ₃ ) ₂ (en)] ³⁺



Question No:9

Which one is the most likely structure of CrCl₃6H₂O if 1/3 of total chlorine of the compound is precipitate by adding AgNO₃to its aqueous solution:

[A] CrCl₃•6H₂O
[B] [Cr(H₂O)₃Cl₃]•(H₂O)₃
[C] [CrCl₂(H₂O)₄]•Cl•2H₂O
[D] [CrCl(H₂O)₅]Cl₂•H₂O



Question No:10

The complex [Co(NH₃)₅Br]SO₄will give white ppt. with:

[A] PbCl₂
[B] AgNO₃
[C] KI
[D] None of these



Question No:11

The two compounds [Co(SO₄)(NH₃)₅]Br and [Co(SO₄)(NH₃)₅]Cl represent:

[A] Linkage isomerism
[B] (C) Co-ordination isomerism
[C] (B) Ionisation isomerism
[D] No isomerism



Question No:12

The structure of iron Pentacarbonyl is:

[A] Square planar
[B] Trigonal bipyramidal
[C] Triangular
[D] None of these



Question No:13

The EAN of platinum in potassium Hexachloroplatinante(IV) is:

[A] 46
[B] 86
[C] 36
[D] 84



Question No:14

Diethylene triamine is:

[A] Chelating agent
[B] (C) Tridentate ligand
[C] (B) Polydentate ligand
[D] All of these



Question No:15

How many moles of AgCl would be obtained, when 100 ml of 0.1 M Co(NH₃)₅Cl₃is treated with excess of Ag NO₃?

[A] 0.01
[B] 0.02
[C] 0.03
[D] none of these