This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part Ii > Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 9 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The IUPAC name of the complex [Co (NH3)4 Cl2] Cl is A) Tetraammine dichloro cobalt (III) chloride. B) Tetraammine dichloro cobalt (II) chloride. C) Dichloro tetraammine cobalt (III) chloride. D) Tetraammine dichloro cobalt (IV) chloride. Show Answer Correct Answer: A) Tetraammine dichloro cobalt (III) chloride. 2. Which ligand is represented by the symbol 'CS' in coordination compounds? A) Carbonyl. B) Carbonate. C) Cyanide. D) Chloride. Show Answer Correct Answer: C) Cyanide. 3. Bidentate ligand is A) Ethylene diammine (en). B) EDTA. C) CN$^{-}$. D) SCN$^{-}$. Show Answer Correct Answer: A) Ethylene diammine (en). 4. What type of ligand is ethane-1, 2-diamine? A) Polydentate. B) Unidentate. C) Bidentate. D) Chelate. Show Answer Correct Answer: C) Bidentate. 5. Exchange of co-ordination group by a water molecule in complex molecule results in A) Ionisation isomerism. B) Ligand isomerism. C) Hydration isomerism. D) Geometrical isomerism. Show Answer Correct Answer: C) Hydration isomerism. 6. In K3[Co(NO3)6]-NO3 is a A) Neutral ligand. B) Negative ligand. C) Positive ligand. D) None of the above. Show Answer Correct Answer: B) Negative ligand. 7. What is the oxidation state of iron in the coordination compound 'Potassium Hexacyanoferrate(II)'? A) 3. B) 4. C) 2. D) 1. Show Answer Correct Answer: C) 2. 8. What is the IUPAC name for [CoCl2(en)2]? A) Bis(ethylenediamine) dichlorocobalt(III). B) Bis(ethylenediamine) dichlorocobalt(II). C) Dichloroethylenediamine cobalt(II). D) Ethylenediamine dichlorocobalt(II). Show Answer Correct Answer: A) Bis(ethylenediamine) dichlorocobalt(III). 9. Explain the concept of geometric isomerism in coordination complexes. A) Geometric isomerism only applies to organic compounds. B) Geometric isomerism in coordination complexes refers to the different spatial arrangements of ligands around a central metal atom, leading to distinct isomers. C) Geometric isomerism involves changes in the oxidation state of the metal. D) Geometric isomerism is the same as optical isomerism in coordination complexes. Show Answer Correct Answer: B) Geometric isomerism in coordination complexes refers to the different spatial arrangements of ligands around a central metal atom, leading to distinct isomers. 10. Assertion:In metal carbonyls, metals have 0 or low oxidation state.Reason:Carbon monoxide is a strong field ligand. A) Both assertion and reason are correct statements, and reason is the correct explanation of the assertion. B) Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion. C) Assertion is correct, but reason is a wrong statement. D) Assertion is wrong, but reason is correct statement. Show Answer Correct Answer: B) Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion. 11. Which of the following can function as a chelating agent? A) H$_{2}$O. B) SCN. C) SH$^{-}$. D) H$_{2}$NCH$_{2}$CO$_{ 2}$ $^{-}$. Show Answer Correct Answer: D) H$_{2}$NCH$_{2}$CO$_{ 2}$ $^{-}$. 12. The compound having lowest oxidation state of iron is A) [Fe(CO)$_{5}$]. B) K$_{3}$[Fe(CN)$_{6}$]. C) K$_{4}$[Fe(CN)$_{6}$]. D) K$_{2}$FeO$_{4}$. Show Answer Correct Answer: A) [Fe(CO)$_{5}$]. 13. The geometry of [Ni(CO)4] is: A) Octahedral. B) Square planar. C) Tetrahedral. D) Linear. Show Answer Correct Answer: C) Tetrahedral. 14. Which ligand can bind through nitrogen or sulphur to give linkage isomerism? A) Oxalate (ox2-). B) Cyanide (CN-). C) Ammonia (NH3). D) Thiocyanate (NCS-). Show Answer Correct Answer: D) Thiocyanate (NCS-). 15. Which of the following is a concept proposed by Alfred Werner for metal ions? A) Primary and secondary valence. B) Atomic number. C) Electronegativity. D) Molecular mass. Show Answer Correct Answer: A) Primary and secondary valence. 16. Which type of ligand can donate two pairs of electrons? A) Impedentate. B) Polidentate. C) Unidentate. D) Bidentate. Show Answer Correct Answer: D) Bidentate. 17. What is the role of ligands in the stability of coordination complexes? A) Ligands weaken the stability of coordination complexes by repelling the metal. B) Ligands enhance the stability of coordination complexes by forming strong bonds with the metal and influencing the electronic and geometric properties of the complex. C) Ligands only influence the color of the coordination complex. D) Ligands have no effect on the electronic properties of the complex. Show Answer Correct Answer: B) Ligands enhance the stability of coordination complexes by forming strong bonds with the metal and influencing the electronic and geometric properties of the complex. 18. Are all coordination compounds made of metals? A) Coordination compounds are exclusively ionic in nature. B) No, not all coordination compounds are made of metals. C) All coordination compounds contain only organic molecules. D) Every coordination compound must have a metal center. Show Answer Correct Answer: B) No, not all coordination compounds are made of metals. 19. The magnetic moment of [NiCl$_{4}$]$^{2-}$ is A) 4.42 B.M. B) 1.82 B.M. C) 5.46 B.M. D) 2.82 B.M. Show Answer Correct Answer: D) 2.82 B.M. 20. The compound having same molecular formula but different structure and hence different physical and chemical properties are called A) Isotopes. B) Isobars. C) Isotones. D) Isomers. Show Answer Correct Answer: D) Isomers. 21. What is the oxidation state of cobalt in the coordination compound 'Bis(ethane-1, 2-diamine) Cobalt(III) Chloride'? A) 4. B) 1. C) 3. D) 2. Show Answer Correct Answer: C) 3. 22. Which ligand gives maximum splitting? A) Cl-. B) I-. C) Br-. D) CN-. Show Answer Correct Answer: D) CN-. 23. The type of isomerism shown by the complex [CoCl2(en)2] is A) Linkage isomerism. B) Coordination isomerism. C) Ionization isomerism. D) Geometrical isomerism. Show Answer Correct Answer: D) Geometrical isomerism. 24. Which of the following statements is true regarding non-ionisable ligands? A) They do not contribute to the primary valency. B) They can dissociate in solution to form ions. C) They can only form bidentate complexes. D) They are always neutral molecules. Show Answer Correct Answer: A) They do not contribute to the primary valency. 25. Consider the coordination compound, Na$_{2}$[Pt(CN)$_{4}$]. The Lewis acid is A) CN$^{-}$. B) Na$^{+}$. C) Pt$^{2+}$. D) Pt. Show Answer Correct Answer: C) Pt$^{2+}$. 26. Explain the term 'chelation' in coordination compounds. A) Chelation is the process of dissolving metal ions in a solution. B) Chelation involves the simple binding of a metal ion to a single ligand. C) Chelation is the formation of a stable complex between a metal ion and a chelating agent with multiple binding sites. D) Chelation refers to the reaction of metal ions with water molecules only. Show Answer Correct Answer: C) Chelation is the formation of a stable complex between a metal ion and a chelating agent with multiple binding sites. 27. Which of the following compounds shows opticalisomerism? A) [ZnCl4 ]2-. B) [Co(CN)6 ]3-. C) [Cu(NH3 )4 ]2+. D) [Cr(C2O4 )3 ]3-. Show Answer Correct Answer: D) [Cr(C2O4 )3 ]3-. 28. Which ligand set best describes the complex [CoCl2(en)(NH3)4]+ in terms of denticity and neutrality? A) One bidentate anionic, four neutral, two anionic. B) Two bidentate neutral, two neutral, two anionic. C) One bidentate neutral, four neutral, two anionic. D) One tridentate neutral, three neutral, two anionic. Show Answer Correct Answer: C) One bidentate neutral, four neutral, two anionic. 29. State the electronic configuration for the Fe2+ cation. A) [Ar]3d4. B) [Ar]3d2. C) [Ar]3d7. D) [Ar]3d6. Show Answer Correct Answer: D) [Ar]3d6. 30. The charge of the cyanide ion is ..... A) 1-. B) 1+. C) 2-. D) 3-. Show Answer Correct Answer: A) 1-. 31. Which of the following statements is true regarding double salts? A) They dissociate into simple ions in solution. B) They do not dissociate in solution. C) They contain only one type of ion. D) They are always coordination compounds. Show Answer Correct Answer: A) They dissociate into simple ions in solution. 32. Can you think of a use for coordination compounds? A) Fertilizers for plants. B) Medical imaging contrast agents. C) Building materials for construction. D) Food preservatives. Show Answer Correct Answer: B) Medical imaging contrast agents. 33. The number of geometrical isomers shown by the octahedral complex [Ma4b2] is A) 4. B) 0. C) 2. D) 3. Show Answer Correct Answer: C) 2. 34. What is the coordination number of a metal in a complex? A) The coordination number is always 6 for all metals. B) Coordination number is irrelevant in metal complexes. C) The coordination number varies depending on the metal and its ligands, commonly ranging from 2 to 12. D) The coordination number can only be 1 or 3. Show Answer Correct Answer: C) The coordination number varies depending on the metal and its ligands, commonly ranging from 2 to 12. 35. Father of Coordination chemistry A) Einstein. B) Newton. C) Arrhenius. D) Werner. Show Answer Correct Answer: D) Werner. 36. In the IUP nomenclature, how are ligands named when there are two or more present? A) In order of decreasing atomic number. B) In order of increasing molecular weight. C) In random order. D) In alphabetical order. Show Answer Correct Answer: D) In alphabetical order. 37. Which of the following compounds can exhibit fac-mer isomerism? A) [Co(H2O)3(CO)3] 3+. B) [Fe(NH3)2(H2O)4] 2+. C) [Cu(CO)5Cl]+. D) [Fe(CO)5NO2] 2+. Show Answer Correct Answer: A) [Co(H2O)3(CO)3] 3+. 38. What is the name of the complex [Ag(NH3)2]NO3? A) Monoamine silver(II) nitrate. B) Diammine silver(I) nitrate. C) Triammine silver(I) nitrate. D) Diamine silver(II) nitrate. Show Answer Correct Answer: B) Diammine silver(I) nitrate. 39. How do you determine the geometry of a coordination compound? A) Ligand size is the only factor affecting geometry. B) The geometry is determined by the temperature of the solution. C) The geometry is solely based on the metal's oxidation state. D) The geometry of a coordination compound is determined by the coordination number and the types of ligands involved. Show Answer Correct Answer: D) The geometry of a coordination compound is determined by the coordination number and the types of ligands involved. 40. Which response gives the correct coordination number and oxidation number of the transition metal atom in [Co(NH$_{3}$)$_{2}$(H$_{2}$O)$_{2}$Cl$_{2}$] $^{+}$? A) C.N. = 4; O.N. = +2. B) C.N. = 6; O.N. = +3. C) C.N. = 3; O.N. = +1. D) C.N. = 2; O.N. = +3. Show Answer Correct Answer: B) C.N. = 6; O.N. = +3. 41. The compound having lowest oxdation state of iron is A) [Fe(CO)$_{5}$]. B) K$_{3}$[Fe(CN)$_{6}$]. C) K$_{2}$FeO$_{4}$. D) K$_{4}$[Fe(CN)$_{6}$]. Show Answer Correct Answer: A) [Fe(CO)$_{5}$]. 42. How does the presence of water as a ligand influence the properties of coordination compounds? A) Water ligands only affect the color of the compound. B) Water can alter the solubility and reactivity of coordination compounds. C) Water is always a weak ligand in coordination compounds. D) Water ligands do not affect the properties of coordination compounds. Show Answer Correct Answer: B) Water can alter the solubility and reactivity of coordination compounds. 43. What are the common geometries associated with coordination compounds? A) Dodecahedral. B) Hexagonal. C) Common geometries include linear, trigonal planar, tetrahedral, square planar, and octahedral. D) Cubic. Show Answer Correct Answer: C) Common geometries include linear, trigonal planar, tetrahedral, square planar, and octahedral. 44. What is the coordination number of the central metal atom in the complex 'Tetraamminecopper(II) Sulfate'? A) 6. B) 4. C) 5. D) 8. Show Answer Correct Answer: A) 6. 45. In octahedral complexes, how many positions are occupied by ligands directly attached to the central metal atom? A) 7. B) 4. C) 6. D) 5. Show Answer Correct Answer: C) 6. 46. How do you name a complex with a bidentate ligand? A) [Ligand name] [bis-if applicable] [Metal name] [oxidation state]. B) [Ligand name] [Metal name] [prefix] [oxidation state]. C) [Ligand name] [Metal name] [oxidation state]. D) [Metal name] [bis-if applicable] [Ligand name] [oxidation state]. Show Answer Correct Answer: A) [Ligand name] [bis-if applicable] [Metal name] [oxidation state]. 47. Square planar has coordination number A) 2. B) 6. C) 4. D) 3. Show Answer Correct Answer: C) 4. 48. What is the definition of a coordination compound? A) A compound with only one type of ligand. B) A compound with a central metal atom bonded to a single molecule. C) A compound with no counter ions. D) A compound with a metal atom bonded to a number of ions or molecules. Show Answer Correct Answer: D) A compound with a metal atom bonded to a number of ions or molecules. 49. Which experiment is commonly used to measure the magnetic moment of coordination compounds? A) Electrolysis. B) Magnetic susceptibility. C) Spectroscopy. D) Chromatography. Show Answer Correct Answer: B) Magnetic susceptibility. 50. NH$_{2}$(CH$_{2}$)$_{2}$NH$_{2}$ is A) Unidentate ligand. B) Bidentate ligand. C) Tridentate ligand. D) Ambidentate ligand. Show Answer Correct Answer: B) Bidentate ligand. 51. Hybridization of Fe in K$_{3}$ [Fe(CN )$_{6 }$] A) Sp$^{3}$. B) Sp$^{3}$d$^{2}$. C) Dsp$^{3}$. D) D$^{2}$sp$^{3}$. Show Answer Correct Answer: D) D$^{2}$sp$^{3}$. 52. The magnetic moment of [NiL4] $^{2-}$ ion is found to be zero. Then the hybridization of the complex ion is (L = monodentate anionic ligand). At no of Ni-28. A) Dsp$^{2}$ hybridized. B) Sp$^{3}$ hybridized. C) D$^{2}$sp hybridized. D) Spd$^{2 }$hybridised. Show Answer Correct Answer: A) Dsp$^{2}$ hybridized. 53. How do you name a coordination compound with a cation and an anion? A) Name the anion first, followed by the cation. B) Combine the cation and anion into one word. C) Name the cation first, followed by the anion. D) Use the Latin names for both the cation and anion. Show Answer Correct Answer: C) Name the cation first, followed by the anion. 54. What is the coordination number of this complex ion [Cu(H2O)6] 2+? A) 1. B) 7. C) 8. D) 6. Show Answer Correct Answer: D) 6. 55. What are the properties of a ligand? A) Usually Lewis Acid. B) Have unpaired electrons. C) Have lone pairs. D) They are cations. Show Answer Correct Answer: C) Have lone pairs. 56. Amongst the following ions? Which one has the highest magnetic moment value:(i) [Cr(H$_{2}$O)$_{6}$]$^{3+}$(ii) [Fe(H$_{2}$0)$_{6}$]$^{2+}$ (iii) [Zn(H$_{2}$0)$_{6}$]$^{2+}$ A) (i) [Cr(H$_{2}$O)$_{6}$]$^{3+}$. B) (ii) [Fe(H$_{2}$0)$_{6}$]$^{2+}$. C) (iii) [Zn(H$_{2}$0)$_{6}$]$^{2+}$. D) None of the above. Show Answer Correct Answer: B) (ii) [Fe(H$_{2}$0)$_{6}$]$^{2+}$. 57. The number of ions per mole of a complex [CoCl.5NH$_{3}$]Cl$_{2}$ in aqueous solution will be A) 3. B) 9. C) 4. D) 2. Show Answer Correct Answer: A) 3. 58. The correct statement with respect to the complexes Ni(CO)4 and [Ni(CN)4]2-is A) Nickel is in the same oxidation state in both. B) Both have tetrahedral geometry. C) Both have square planar geometry. D) Have tetrahedral and square planar geometry respectively. Show Answer Correct Answer: D) Have tetrahedral and square planar geometry respectively. 59. Which theory is considered as the first theory, regarding the bonding in Co-ordination Compounds? A) MOT. B) VBT. C) Werner's theory. D) CFT. Show Answer Correct Answer: C) Werner's theory. 60. Which is tetrahedral? A) [Fe(CN)6]4-. B) [Co(NH3)6]3+. C) [PtCl4]2-. D) [NiCl4]2-. Show Answer Correct Answer: D) [NiCl4]2-. ← PreviousNext →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 1Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 2Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 3Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 4Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 5Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 6Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 7Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books