NCERT chemistry coordinate compounds questions,answers,solutions,pdfs

Coordinate Compound Mock Exam-6

Question No:1

Amongst the following ions which one has the highest paramagnetism

[A] [Cr(H2O)]2+
[B] [Fe(H2O)]3+
[C] [Cu(H2O)]2+
[D] [Zn(H2O)]2+



Question No:2

Which of the following complexes is an inner orbital complex ?

[A] [CoF]63-
[B] [FeF ]63-
[C] [Cr(NH3)6]3+
[D] [Fe(H2O) 6]2+



Question No:3

Hexafluoro cobaltate(III) ion is found to be high spin complex, the probable hybrid state of cobalt in it, is:-

[A] dsp2
[B] d2sp3
[C] sp3d2
[D] sp3d



Question No:4

In the complex [Ni(H2O) 2(NH3)4] +2 the magnetic moment(µ ) of Ni is :-

[A] Zero
[B] 2.83 BM
[C] 1.73 BM
[D] 3.87 BM



Question No:5

Which of the following system has maximum number of unpaired electrones :-

[A] d5 (Octahedral, low spin)
[B] d8 (Tetrahedral)
[C] d6 (Octahedral, low spin)
[D] d3 (Octahedral)



Question No:6

For which of the dn Configuration, both low and high spin complexes are possible:-

[A] d9
[B] d3
[C] d5
[D] d2



Question No:7

The wrong statement is :-

[A] Halide ligands forms high spin complex
[B] Strong ligands form low spin complex
[C] [FeF6]-3 is inner orbital complex
[D] [NiCl4]–2 is outer orbital complex



Question No:8

The compound which does not shows paramagnetism is :–

[A] [Cu(NH3)4]Cl2
[B] Fe(CO)5
[C] NO
[D] NO2



Question No:9

What is Incorrect for K4[Fe(CN)6]

[A] O.N of Iron is +2
[B] It exhibit diamagnetic character
[C] It exhibit paramagnetic character
[D] It involved d2sp3hybridisation



Question No:10

The complex [Mn(CN) 6]4–is :-

[A] High spin complex
[B] Diamagnetic ion
[C] Having magnetic moment 1.73 BM
[D] Outer orbital complex



Question No:11

The complex ion which have no d-electrons in the central metal ion is(at No.Cr = 24, Mn = 25, V = 23, Fe = :-

[A] VOSO 4
[B] MnO4
[C] [Fe(CN) 6]3–
[D] [Cr(H2O) 6]3+



Question No:12

In which of the following molecules, central atom used orbitals of different quantum number in the hybridisation :-

[A] [Fe(CO)5]
[B] IF7
[C] Ni(CO)4
[D] XeO4



Question No:13

What are the geometric shape and the oxidation number of the copper atom, respectively, for the complex ion, [Cu(NH3)4(OH2)2]2+?

[A] Tetrahedral; + 2
[B] Square planar; – 2
[C] Linear; + 3
[D] Octahedral; + 2



Question No:14

For FeF63– and Fe(CN)63– magnetic moment of the fluoride complex is expected to be:-

[A] The same as the magnetic moment of the cyanide complex
[B] Larger than the magnetic moment of the cyanide complex because there are more unpaired electrons in the fluoride complex
[C] Smaller than the magnetic moment of the cyanide complex because there are more unpaired electrons in the fluoride complex
[D] Larger than the magnetic moment of the cyanide complex because there are fewer unpaired electrons in the fluoride complex



Question No:15

Which of the following contains one unpaired electron in the 4p orbitals :-

[A] [Cu(NH3) 2]+
[B] [Cu(NH3)4]2+
[C] [Cu(CN) 4]3–
[D] [Ni(CN) 4] 2–