Coordination Compounds MCQs Mock Test of Class 12th Chemistry

Welcome to your Coordination Compounds MCQs Mock Test of Class 12th Chemistry

Question 1. What kind of isomerism exists between [Cr(H2O)6]Cl3 and [Cr(H3O)5Cl]Cl2. H2O?

(a) Linkage isomerism

(b) Solvate isomerism

(d) Coordination isomerism

Question 2 The IUPAC name of [PtCI(NO2) (NH3)4]SO4 is

(a) Tetraamminechloridonitrito-N- platinate (III) sulphate

(b) Tetraamminechloridonitrito-N- platinum (IV) sulphate

(d) Tetraamminechloridonitrito-N- platinate (IV) sulphate

Question 3. K2[Fe(CN)6] is a/an

(a) double salt

(b) complex salt

(d) base

Question 4. Which of the following compounds has tetrahedral geometry?

(a) [Ni(CN)4]2-

(b) [Pd(CN)4]2-

(c [PdCl4]2-

(d) [NiCl4]2-

Question 5. The number of possible isomers for the complex |Co(C2O4)2 (NH3)2|

(a) 1

(b) 2

(d) 4

Question 6. The oxidation state of nickel in |(Ni(CO4)| is

(a) 1

(b) 4

(d) 3

Question 7. According to Werner’s theory of coordination compounds

(a) Primary valency is ion isable

(b) Secondary valency is ionisable

(d) Neither primary nor secondary valency ¡s ionisable

Question 8. Ammonia acts as a very good ligand but ammonium ion does not form complexes because

(a) NH3 isa gas while NH+4 is in liquid form.

(b) NH3 undergoes sp3 hybridisatiort while NH+4 undergoes sp3 d hybndisation

(d) NH+4 ion has one unpaired electron while NH3 has two unpaired electrons

Question 9. The ligand N(CH2CH2NH2) is

(a) bidentate

(b) tridentate

(d) pentadentate

10.

Question 10. Which of the following is a tridentate ligand?

(a) EDTA4+

(b) (COO)2−2

(d) NO−2

11.

Question 11. Among the following which arc ambidentate ligands? (i) SCN– (ii) NO−3 (iii) NO−2 (iv) C2O2−4

(a) (i) and (iii)

(b) (i) and (iv)

(d) (ii) and (iv)

12.

Question 12. Which of the following ligands form a chelate?

(a) Acetate

(b) Oxalate

(d) Ammonia

13.

Question 13. Which of the following is not a neutral ligand?

(a) H2O

(b) NH3

(d) CO2

14.

Question 14. Which of the following ligands will not show chelation?

(a) EDTA

(b) DMG

(d) SCN–

15.

Question 15. The complex ion which has no d-electrons in the central metal atom is

(a) [MnO4]–

(b) [Co(NH3)6]3-

(d) [Cr(H2O)6]3+

16.

Question 16. The correct IUPAC name of the coordination compound K3|Fe(CN)5NO| is

(a) Potassium pentacyanonitrosylferrate (II)

(b) Potassium pentacyanonitroferrate (II)

(d) Potassium nitritepentacynanoiron (II)

17.

Question 17. The correct IUPAC name of the following compound is |Cr(NH3)5(NCS)||ZnCl4|

(a) Penta amine isothiocyanato chromium (III) tetrachlorozincate (II)

(b) Penta amine isothicocyanatezinc chloridechromate (III)

(d) isothiocyanatopenta amine chromium (II) zinc chloride (IV)

18.

Question 18. Which of the following shall form an octahedral complex?

(a) d4 (low spin)

(b) d8 (high spin)

(d) All of these

19.

Question19. EDTA is used for the estimation of

(a) Na+ and K+ ions

(b) Cl– and Br– ions

(d) Ca2+ and Mg2+ ions

20.

Question 20. The solution of the complex [Cu(NH3)4] SO4 in water will

(a) give the tests of Cu2+ ion

(b) give the tests of NH3

(d) not give the tests of any of the above

21.

Question 21. Correct formulae of tetraaminechloronitroplatinum (IV) sulphate can be written as

(a) [Pt(NH3)4 (ONO) Cl]SO4

(b) [Pt(NH3)4Cl2NO2]2

(d) [PtCl(ONO)NH3(SO4)]

22.

Question 22. Which of the following isomers will give white precipitate with BaCl2 solution?

(a) [CO(NH3)5SO4]Br

(b) [CO(NH3)5Br]SO4

(d) [CO(NH3)4(SO4)]

23.

Question 23. |Pt(NH3)4| |CuCl4| and |Cu(NH3)4||PtCl4| are known as

(a) ionisation isomers.

(b) coordination isomers

(d) polymerisation isomers

24.

Question 24. The name of the linkage isomer of |C0(NH3)5NO2|Cl2 will be

(a) pentaammonotrocobalt (II) chloride

(b) pentaaminenitrochloridecobaltate (III)

(d) pentanitrosoamminechlorocobaltate(III)

25.

Question 25. Which of the following complex species is not expected to exhibit optical isomerism?

(a) [Co(en) (NH3)2Cl2]+

(b) [Co(en)3]3+

(c)[Co(en)2Cl2]

(d) [Co(NH3)3Cl3]

26.

Question 26. Which of the following compounds exhibits linkage isomerism?

(a) [Co(en)3]Cl3

(b) [Co(NH3)6] [Cr(en)3]

(d) [Co(NH3)5CI]Br2

27.

Question 27. Which of the following will not show geometrical isomerism?

(a) [Cr(NH3)4Cl2]Cl

(b) [Co(en)2Cl2]Cl

(d) [Pt(NH3)2Cl2]

28.

Question 28. Which of the following shows maximum number of isomers?

(a) [Cr(NH3)4Cl2]

(b) [Ni(en)NH3]2+

(d) [Cr(SCN)2(NH3)4]+

29.

Question 29. For the square planar complex |Mabcd| where M is the central atom and a, b. c, d are monodentate ligands, the number of possible geometrical isomers are

(a) 1

(b) 2

(d) 4

30.

Question 30. The hybridisation involved in [Co(C2O4)3]3- is

(a) sp3d2

(b) sp3d3

(d) d2sp3

31.

Question 31. The IUPAC name of K3[Fe(CN)5NO] is

(a) potassium pentacyanonitrosylferrate(II)

(b) potassium pentacyanonitroferrate(II)

(d) tripotassium pentacyanonitrosy If errate(II)

32.

Question 32. Which of the following is hexadentate ligand?

(a) diene

(b) CN–

(d) EDTA

33.

Question 33. On adding AgNO3 solution to 1 mole of PdCl2. 4NH3 two moles of AgCl are formed. The secondary valency of Pd in the complex will be

(a) 0

(b) 2

(d) 1

34.

Question 34. Which metal is present in vitamin B12 cyanocobalamin?

(a) Fe

(b) Co

(d) Pt

35.

Question 35. Which is present in metal carbonyls?

(a) M-C σ bond

(b) M – C π bond

(d) None of these

36.

Question 36. How many ions are given by [Co(NH3)5 Br] Cl2 complex in water?

(a) 4

(b) 2

(d) 3

37.

Question 37. Which complex exhibits geometrical isomerism?

(a) [MnBr4]2+

(b) [Pt(NH3)3Cl]+

(d) [Fe(H2O)5NO]2+

38.

Question 38. IUPAC name of [Pt(NH3)3 Br (NO2) Cl] Cl isw

(a) triamminechlorodibromidoplatinum (IV) chloride

(b) triamminechloridobromidonitrochloride- platinum (IV) chloride

(d) triamminenitrochlorobromoplatinum (IV) chloride

39.

Question 39. Trunbull’s blue is

(a) Ferricyanide

(b) Ferrous ferricyanide

(d) Fe3[Fe(CN)6]4

40.

Question 40. Primary and secondary valency of Pt in [Pt(en)2Cl2] are

(a) 4, 4

(b) 4, 6

(d) 2, 6

41.

Question 41. The complex ions [Co(NH3)5(NO2)]2+ and [Co(NH3)5 (ONO)]2+ are called

(a) Ionization isomers

(b) Linkage isomers

(d) Geometrical isomers

42.

Question 42. Which of the following has square planar structure?

(a) [NiCl4]2-

(b) [Ni(CO)4]

(d) None of these

43.

Question 43. Which of the following has magnesium?

(a) Chlorophll

(b) Haemocyanin

(d) Vitamin B12

44.

Question 44. Which of the following shall form an octahedral complex?

(a) d4 (low spin)

(b) d8 (high spin)

(d) All of these

45.

Question 45. EDTA is used for the estimation of

(a) Na+ and K+ ions

(b) Cl– and Br– ions

(d) Ca2+ and Mg2+ ions

46.

Question 46. K2[Fe(CN)6] is a/an

(a) double salt

(b) complex salt

(d) base

47.

47. The oxidation state of nickel in |(Ni(CO4)| is

(a) 1

(b) 4

(d) 3

48.

Question 48. According to Werner’s theory of coordination compounds

(a) Primary valency is ion isable

(b) Secondary valency is ionisable

(d) Neither primary nor secondary valency ¡s ionisable

49.

Question 49. IUPAC name of [Pt(NH3)3 Br (NO2) Cl] Cl isw

(a) triamminechlorodibromidoplatinum (IV) chloride

(b) triamminechloridobromidonitrochloride- platinum (IV) chloride

(d) triamminenitrochlorobromoplatinum (IV) chloride

50.

Question 50. Trunbull’s blue is

(a) Ferricyanide

(b) Ferrous ferricyanide

(d) Fe3[Fe(CN)6]4

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