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 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 6 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Complexes having bidentate ligands are known as A) Central metal atom or ion. B) Chelates. C) Co-ordination sphere. D) Complex ion. Show Answer Correct Answer: B) Chelates. 2. What is the primary factor for the classification of ligands? A) Color. B) Denticity and field intensity. C) Shape. D) Charge. Show Answer Correct Answer: B) Denticity and field intensity. 3. How do coordination compounds differ from simple ionic compounds? A) Coordination compounds have a central metal atom bonded to ligands, while ionic compounds consist of simple cations and anions. B) Coordination compounds are always soluble in water. C) Coordination compounds do not contain any ions. D) Coordination compounds are less stable than ionic compounds. Show Answer Correct Answer: A) Coordination compounds have a central metal atom bonded to ligands, while ionic compounds consist of simple cations and anions. 4. What is the term for compounds having the same chemical formula but different structural arrangements? A) Coordination number. B) Oxidation state. C) Chelation. D) Isomerism. Show Answer Correct Answer: D) Isomerism. 5. What is the IUPAC name of the coordination compound 'Tris(ethylenediamine)nickel(II) Sulfate'? A) Nickel Tris(ethylenediamine) Sulfate. B) Tris(ethylenediamine)nickel(II) Sulfate. C) Tris(ethylenediamine)nickel(II) Sulfate. D) Nickel Triethylenediamine Sulfate. Show Answer Correct Answer: B) Tris(ethylenediamine)nickel(II) Sulfate. 6. Which complex is low spin? A) [Fe(CN)6]4-. B) [CoF6]3-. C) [MnF6]3-. D) [FeF6]3-. Show Answer Correct Answer: A) [Fe(CN)6]4-. 7. In VBT, the formation of coordination compounds involves: A) Hybridization of metal orbitals. B) Electron donation by ligands. C) Both a and b. D) Neither a nor b. Show Answer Correct Answer: C) Both a and b. 8. In K$_{4}$[Fe(CN)$_{6}$] the number of unpaired electrons in iron are A) 0. B) 2. C) 3. D) 5. Show Answer Correct Answer: A) 0. 9. Why did Werner's theory fail to explain certain features of bonding in coordination compounds? A) It did not consider the oxidation state of metals. B) It could not answer why only certain elements form coordination compounds, why bonds have directional properties, and why compounds have magnetic and optical properties. C) It ignored the role of ligands. D) It only focused on ionic bonding. Show Answer Correct Answer: B) It could not answer why only certain elements form coordination compounds, why bonds have directional properties, and why compounds have magnetic and optical properties. 10. What type of isomerism is exhibited by [Co(NH3)4Cl2]? A) Optical isomerism. B) Linkage isomerism. C) Geometrical isomerism. D) Coordination isomerism. Show Answer Correct Answer: C) Geometrical isomerism. 11. According to Valence Bond Theory, which type of hybridisation corresponds to a coordination number of 4 and a tetrahedral geometry? A) Sp2d2. B) Sp3. C) Sp3d. D) Dsp2. Show Answer Correct Answer: B) Sp3. 12. Which metal ion is d10? A) Fe2+. B) Ni2+. C) Cu2+. D) Zn2+. Show Answer Correct Answer: D) Zn2+. 13. Identify the oxidation state of copper in [CuCl4]2-. A) +1. B) 0. C) +3. D) +2. Show Answer Correct Answer: D) +2. 14. An octahedral complex is formed when hybrid orbitals of the following type are involved A) Sp2d2. B) D2sp3. C) Dsp2. D) Sp3. Show Answer Correct Answer: B) D2sp3. 15. How do you name a complex with a bridging ligand? A) Name the bridging ligand first, followed by the metal centers. B) Name the metal centers first, followed by the bridging ligand. C) Only name the bridging ligand without mentioning the metal centers. D) List the bridging ligand and metal centers in any order. Show Answer Correct Answer: A) Name the bridging ligand first, followed by the metal centers. 16. List two examples of bidentate ligands. A) Chloride. B) Ethylenediamine, Oxalate. C) Carbonate. D) Acetate. Show Answer Correct Answer: B) Ethylenediamine, Oxalate. 17. What is the correct name for [Co(en)3]Cl3? A) Bis(ethylenediamine)cobalt(II) chloride. B) Tris(ethylenediamine)cobalt(IV) chloride. C) Tris(ethylenediamine)cobalt(II) bromide. D) Tris(ethylenediamine)cobalt(III) chloride. Show Answer Correct Answer: D) Tris(ethylenediamine)cobalt(III) chloride. 18. Sodium bromochlorodinitroplatinate(II) is A) Na[PtBrCl(NO$_{2}$)$_{2}$]. B) Na$_{2}$[PtBrCl$_{2}$(NO$_{2}$)$_{2}$]. C) Na$_{2}$[PtBr$_{2}$Cl(NO$_{2}$)$_{2}$]. D) Na$_{2}$[PtBrCl(NO$_{2}$)$_{2}$]. Show Answer Correct Answer: D) Na$_{2}$[PtBrCl(NO$_{2}$)$_{2}$]. 19. Which formula correctly represents tris(ethylenediamine)rhodium(III) ion? A) [Rh(en)3]3+ with Rh(III). B) [Rh(en)2Cl2]-with Rh(III). C) [Rh(en)2]2+ with Rh(II). D) [Rh(en)3]2+ with Rh(II). Show Answer Correct Answer: A) [Rh(en)3]3+ with Rh(III). 20. In coordination chemistry, the term 'field' refers to: A) Electric field. B) Ligand field. C) Magnetic field. D) Gravitational field. Show Answer Correct Answer: B) Ligand field. 21. What is the coordination number of the complex [Ag(NH3)2]+? A) 2. B) 4. C) 3. D) 6. Show Answer Correct Answer: A) 2. 22. What is the coordination number of Ni in [Ni(NH3)6]2+? A) 4. B) 8. C) 6. D) 2. Show Answer Correct Answer: C) 6. 23. According to the explanation, why is the oxidation number of chromium in [Cr(NH3)3(H2O)3]Cl3 +3? A) Because there are three chloride ions and the complex is neutral. B) Because ammonia is a neutral ligand. C) Because water is a neutral ligand. D) Because the charge on the complex ion is-3. Show Answer Correct Answer: A) Because there are three chloride ions and the complex is neutral. 24. Which of the following is a bidentate ligand? A) Water (H2O). B) Ethylenediamine (C2H8N2). C) Ammonia (NH3). D) Chloride ion (Cl-). Show Answer Correct Answer: B) Ethylenediamine (C2H8N2). 25. What is a common property of noble gases? A) They are highly reactive. B) They have full valence electron shells. C) They readily form compounds. D) None of the above. Show Answer Correct Answer: B) They have full valence electron shells. 26. Strong field ligand? A) F-. B) CN-. C) NH3. D) H2O. Show Answer Correct Answer: B) CN-. 27. What is the oxidation state of cobalt in [Co(NH3)5Cl]Cl2? A) +3. B) 0. C) +2. D) +1. Show Answer Correct Answer: A) +3. 28. Identify the double salt A) Na$_{2}$ZnO$_{2}$. B) [Cu(NH$_{3}$)$_{4}$]SO$_{4}$. C) K$_{2}$SO$_{4}$.Al$_{2}$(SO$_{4}$)$_{3}$.24H$_{2}$O. D) Na$_{2}$SO$_{4}$. Show Answer Correct Answer: C) K$_{2}$SO$_{4}$.Al$_{2}$(SO$_{4}$)$_{3}$.24H$_{2}$O. 29. How are ligands named in coordination compounds if there are multiple ligands present? A) In random order. B) In order of decreasing ligand strength. C) In order of increasing ligand charge. D) In alphabetical order. Show Answer Correct Answer: D) In alphabetical order. 30. Which type of complex has a central metal atom surrounded by six ligands? A) Cationic complex. B) Neutral complex. C) Anionic complex. D) Chelating complex. Show Answer Correct Answer: B) Neutral complex. 31. In the complex [Fe(H$_{2}$O)$_{6}$]$^{2+}$$_{, the coordination number of the complex is ..... }$ A) 2. B) 1. C) 4. D) 0. Show Answer Correct Answer: A) 2. 32. The IUPAC naming of NH$_{3}$ is ..... A) Ammine. B) Imine. C) Amine. D) Aquo. Show Answer Correct Answer: A) Ammine. 33. What is the IUPAC name for the complex [Ag(NH3)2]NO3? A) Diammine silver(I) nitrate. B) Diammine silver(II) nitrate. C) Silver(II) nitrate. D) Monoammine silver(I) nitrate. Show Answer Correct Answer: A) Diammine silver(I) nitrate. 34. Which of the following acts as a bidentate ligand in complex formation A) Oxalate. B) Acetate. C) EDTA. D) Thiocyanate. Show Answer Correct Answer: A) Oxalate. 35. Which Hydroxide Precipitate is "Amphoteric" A) [Fe(H$_{2}$O)$_{4}$(OH)$_{2}$]. B) [Fe(H$_{2}$O)$_{3}$(OH)$_{3}$]. C) [Cr(H$_{2}$O)$_{3}$(OH)$_{3}$]. D) [Cu(H$_{2}$O)$_{4}$(OH)$_{2}$]. Show Answer Correct Answer: C) [Cr(H$_{2}$O)$_{3}$(OH)$_{3}$]. 36. In which of the following compounds an atom contributes both the electrons to form a bond? A) Co-ordination compounds. B) Covalent compound. C) Organic compounds. D) Ionic compounds. Show Answer Correct Answer: A) Co-ordination compounds. 37. K$_{4}$[Ni(CN)$_{4}$] is A) Potassium tetracyanonickelate(I). B) Potassium tetracyanonickelate(0). C) Potassium tetracyanonickelate(IV). D) Potassium tetracyanonickelate(II). Show Answer Correct Answer: B) Potassium tetracyanonickelate(0). 38. Define the term 'ligand' in coordination chemistry. A) A ligand is a central metal atom in a coordination complex. B) A ligand is a solvent used in chemical reactions. C) A ligand is a type of chemical reaction involving metals. D) A ligand is a molecule or ion that binds to a central metal atom in a coordination complex. Show Answer Correct Answer: D) A ligand is a molecule or ion that binds to a central metal atom in a coordination complex. 39. In a square planar complex of formula [MX2L2], how can the two X ligands be arranged? A) Only adjacent to each other. B) Only opposite to each other. C) Either adjacent (cis) or opposite (trans) to each other. D) Randomly. Show Answer Correct Answer: C) Either adjacent (cis) or opposite (trans) to each other. 40. What is the role of chelating agents in coordination compounds? A) Chelating agents stabilize the metal ion by forming multiple bonds. B) Chelating agents are always negatively charged ions. C) Chelating agents only act as solvents in coordination compounds. D) Chelating agents do not affect the properties of coordination compounds. Show Answer Correct Answer: A) Chelating agents stabilize the metal ion by forming multiple bonds. 41. You discover that the complex decomposes in water. You dissolve 0.1000 g of the complex in H$_{2}$O and add excess NaHg(SCN)$_{4}$, which precipitates Co(II) as CoHg(SCN)$_{4}$(s). After the precipitate is washed and dried, its mass is 0.1102 g. How many grams of cobalt are contained in 0.1000 g of the complex? A) 0.0132. B) 0.0396. C) 0.0548. D) 0.437. E) 0.1102. Show Answer Correct Answer: A) 0.0132. 42. The central metal ion of K$_{4}$[Fe(CN)$_{6}$] A) Fe$^{2+}$. B) Fe$^{+}$. C) Fe3$^{+}$. D) Fe4$^{+}$. Show Answer Correct Answer: A) Fe$^{2+}$. 43. Which rule helps predict the stability of coordination compounds? A) Pauli exclusion principle. B) EAN rule. C) VSEPR rule. D) Hund's rule. Show Answer Correct Answer: B) EAN rule. 44. What are the oxidation numbers of each central metal atom in the following coordination compounds? K$_{3}$[Fe(CN)$_{6}$], [Cr(NH$_{3}$)$_{4}$Br$_{2}$]Br, [Ni(H$_{2}$O)$_{6}$]Cl$_{2}$, Na$_{2}$[TaF$_{7}$] A) -3, 3, 2, 5. B) 3, 3, 2, 7. C) 3, 3, 3, 5. D) 3, 3, 2, 5. E) -3, 1, 2, 5. Show Answer Correct Answer: D) 3, 3, 2, 5. 45. What is the nomenclature rule for naming coordination compounds with multiple ligands? A) Follow alphabetic order of ligands. B) Use the name of the central atom only. C) Follow the order of ligands in the compound. D) Use the same name for all ligands. Show Answer Correct Answer: A) Follow alphabetic order of ligands. 46. Transition elements have ..... A) Incompletely filled s orbitals. B) Incompletely filled p orbitals. C) Incompletely filled d orbitals. D) None of the above. Show Answer Correct Answer: C) Incompletely filled d orbitals. 47. Which of the following is a characteristic of a tetrahedral complex? A) It has a coordination number of 4. B) It is always a homoleptic complex. C) It has a coordination number of 6. D) It is always diamagnetic. Show Answer Correct Answer: A) It has a coordination number of 4. 48. Coordination number of Fe in [Fe(CN)6]4-? A) 4. B) 5. C) 2. D) 6. Show Answer Correct Answer: D) 6. 49. Which one of the following is the correct order of fieldstrength of ligands in spectrochemical series? A) H2O < F-< CN-< Cl-< I-. B) F-< H2O < I-< CN-< Cl-. C) I-< Cl-< F-< H2O < CN-. D) CN-< I-< F-< Cl-< H2O. Show Answer Correct Answer: C) I-< Cl-< F-< H2O < CN-. 50. In the complex [Co(NH$_{3}$)$_{5}$Cl]Cl, the coordination number is A) 3. B) 5. C) 6. D) 4. Show Answer Correct Answer: C) 6. 51. When CO becomes a ligand, the correct name to use is ..... A) Carbon monoxide. B) Carbonyl. C) Carbono. D) None of the above. Show Answer Correct Answer: B) Carbonyl. 52. Identify the 3d metal in the following diamagnetic complex anion:M(CN)$_{6}$$^{4-}$. What is the oxidation state and d-electron count for your metal? A) Ni$^{2+}$, d$^{8}$. B) Ni$^{2+}$, d$^{10}$. C) Fe$^{2+}$, d$^{6}$. D) Fe$^{3+}$, d$^{5}$. Show Answer Correct Answer: D) Fe$^{3+}$, d$^{5}$. 53. According to Werner's theory, which valacy is Non-Ionisable? A) Secondary. B) Tertiary. C) Quarternary. D) Primary. Show Answer Correct Answer: A) Secondary. 54. What are optical isomers that cannot be superimposed on one another called? A) Enantiomers. B) Facial isomers. C) Isotopes. D) Meridional isomers. Show Answer Correct Answer: A) Enantiomers. 55. What is the IUPAC nomenclature used for in coordination compounds? A) Determining the color. B) Naming the compounds systematically. C) Calculating the coordination number. D) Predicting isomerism. Show Answer Correct Answer: B) Naming the compounds systematically. 56. [NiCl$_{4}$]$^{2-}$ is paramagnetic and therefore its geometry is A) Square planar. B) Tetrahedral. C) Bi-pyramidal. D) Pyramidal. Show Answer Correct Answer: B) Tetrahedral. 57. Who is the Father of coordination Chemistry? A) Max Planck. B) Linus Pauling. C) Alfred Werner. D) Albert Einstein. Show Answer Correct Answer: C) Alfred Werner. 58. Which coordination entity is chiral (optically active) out of the following two:(a) cis-[CrCl2 (ox)2]3-(b) trans-[CrCl2 (ox)2]3-? A) Both are non-chiral. B) (b) trans-[CrCl2 (ox)2]3-. C) Both are chiral. D) (a) cis-[CrCl2 (ox)2]3-. Show Answer Correct Answer: D) (a) cis-[CrCl2 (ox)2]3-. 59. Which of the following ions has the highest magnetic moment value? A) [Cr(H2O)6]3+. B) [Fe(H2O)6]2+. C) [Zn(H2O)6]2+. D) None of the above. Show Answer Correct Answer: B) [Fe(H2O)6]2+. 60. Dsp$^{2}$ hybridization represents A) Square-planar geometry. B) Square-pyramidal geometry. C) Octahedral geometry. D) Trigonal-bipyramidal geometry. Show Answer Correct Answer: A) Square-planar geometry. ← 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 7Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 8Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books