NEET chemistry coordinate compounds sample,mock,model test papers

Coordinate Compound Mock Exam-21

Question No:1

The diamagnetic species is

[A] [Ni(CN) 4 ]2-
[B] [NiCl4 ]2-
[C] [CoCl4 ]2-
[D] [CoF 6 ]2-



Question No:2

The correct order for the wavelength of absorption in the visible region is

[A] [Ni(NO2 ) 6 ] 4–< [Ni(NH3 ) 6 ] 2+< [Ni(H2 O) 6 ] 2+
[B] [Ni(NO2 ) 6 ] 4–< [Ni(H2 O) 6 ] 2+ < [Ni(NH 3 )6 ]2+
[C]




[D] (C) [Ni(H2 O) 6] 2+ < [Ni(NH3)6]2+< [Ni(NO2 ) 6] 4-



Question No:3

The pair in which both species have same magnetic moment(spin only value) is

[A] [Cr(H2 O) 6] 2+, [CoCl4] 2–
[B] [Cr(H2O) 6] 2+, [Fe(H 2O) 6] 2+
[C] [Mn(H2 O) 6] 2+, [Cr(H 2O6) 2+
[D] [CoCl6] 2–, [Fe(H2 O) 6] 2+



Question No:4

The number of possible isomers of an octahedral complex [Co(C2O4)2(NH3)2] is

[A] 1
[B] 2
[C] 3
[D] 4



Question No:5

Which of the following metal ions will form complexes with the same magnetic moment and geometry irrespective of the nature of ligands ?

[A] Ni2+
[B] Fe2+
[C] Cu2+
[D] Co2+



Question No:6

Wavelength of red light is absorbed by the complex

[A] [Cu(CN) 4] 2–
[B] [Cu(NH3 ) 4] 2+
[C] CuSO4
[D] Cu(CN) 2



Question No:7

In the change [Cu(H2O)6] 2+ \(xrightarrow{HCl}\)[CuCl(H2O)5] + , the colour changes from

[A] blue to green
[B] blue to pink
[C] pink to green
[D] pink to blue



Question No:8

Which statement is true for ferrocene ?

[A] All Fe-C are of equal length
[B] C are sp2hybridized
[C] It was the first discovered organometallic compound
[D] All of these



Question No:9

A complex PtCl4.5NH3shows a molar conductance of 402 ohm–1 cm2 mol–1 in water and precipitates three moles of AgCl with AgNO3solution. The formula of the complex is

[A] [Pt(NH3)6]Cl4
[B] [Pt(NH3)4Cl2]Cl2
[C] [Pt(NH3)5Cl]Cl3
[D] [Pt(NH3)3Cl3]Cl



Question No:10

The wavelength of light absorbed is highest in

[A] [Co(NH3)5Cl] 2+
[B] [Co(NH3)5 H 2O] 3+
[C] [Co(NH3 ) 6] 3+
[D] [Co(en) 3] 3+



Question No:11

Which of the following is diamagentic ?

[A] [Cu(NH3)4] 2+
[B] [NiCl4] 2–
[C] [PtCl4] 2–
[D] [Cu(H2O) 4] 2+



Question No:12

Which of the following metal ion forms unstable complex with CN?

[A] Ag(I)
[B] Zn(II)
[C] Cu(II)
[D] Cr(II)



Question No:13

Least coording number is shown by

[A] Co2 (CO) 8
[B] Mn2 (CO) 10
[C] [Fe(en) 2NH3]
[D] [Cr(OH)3(NH3)3]



Question No:14

The diamagnetic species is

[A] [Ni(CN) 4] 2–
[B] [NiCl4] 2–
[C] [CoCl4] 2–
[D] [CoF4] 3–



Question No:15

Amongst the following the most stable complex is

[A] [Fe(H2O) 6] 3+
[B] [Fe(NH3)6] 3+
[C] [Fe(C2O4)3] 3–
[D] [FeCl6] 3–