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 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A complex with a spin magnetic moment of 4.9 BM (Bohr Magnetons) indicates the presence of how many unpaired electrons? A) 0. B) 2. C) 4. D) 5. Show Answer Correct Answer: C) 4. 2. What type of isomerism can occur in octahedral complexes? A) Geometrical isomerism. B) Optical isomerism. C) Linkage isomerism. D) All of the above. Show Answer Correct Answer: D) All of the above. 3. IUPAC name of [Cr(H2O)6]Cl3? A) Chromium hexahydrate. B) Hexaaquachromium(III) chloride. C) Chromium aqua chloride. D) Chromium(III) chloride. Show Answer Correct Answer: B) Hexaaquachromium(III) chloride. 4. What is the significance of the ligand field theory? A) Ligand field theory is significant for explaining the electronic structure and properties of transition metal complexes. B) Ligand field theory helps in predicting the solubility of ionic salts. C) Ligand field theory is essential for understanding the reactivity of alkanes. D) Ligand field theory is crucial for determining the color of organic compounds. Show Answer Correct Answer: A) Ligand field theory is significant for explaining the electronic structure and properties of transition metal complexes. 5. What suffix is used for the name of a metal in a complex anion? A) -ite. B) -ate. C) -ium. D) -ide. Show Answer Correct Answer: B) -ate. 6. Which is the simplest model we can use to explain the magnetic properties of coordination compounds? A) Crystal-Field model. B) Valence Bond model. C) Ligand-Field model. D) Thailand's top model. Show Answer Correct Answer: B) Valence Bond model. 7. Which of the following neutral ligands has a special name when used in coordination compounds? A) Water (H2O). B) Oxygen (O2). C) Methane (CH4). D) Nitrogen (N2). Show Answer Correct Answer: A) Water (H2O). 8. What is the bond angle in an octahedral complex? A) 120 degrees. B) 60 degrees. C) 90 degrees. D) 45 degrees. Show Answer Correct Answer: C) 90 degrees. 9. Which of the following is the most stable complex species? A) [Fe(CN)6]3-. B) [Fe(CO)5]. C) [Fe(C2O4)3]3-. D) [Fe(H2O)6]3+. Show Answer Correct Answer: C) [Fe(C2O4)3]3-. 10. The number of geometrical isomers shown by square planar complex[Ma2b2] is A) 3. B) 1. C) 2. D) 0. Show Answer Correct Answer: C) 2. 11. What factors influence the color of coordination compounds? A) Only the temperature of the solution. B) The size of the metal ion alone. C) The presence of other compounds in the solution. D) The type of ligands and the oxidation state of the metal ion. Show Answer Correct Answer: D) The type of ligands and the oxidation state of the metal ion. 12. Which kind of isomerism is exhibited by octahedral Co(NH3)4Br2Cl? A) Geometrical and ionisation. B) Geometrical and optical. C) Optical and ionisation. D) Geometrical only. Show Answer Correct Answer: A) Geometrical and ionisation. 13. A ligand can also be regarded as A) Lewis acid. B) Bronsted base. C) Bronsted acid. D) Lewis base. Show Answer Correct Answer: D) Lewis base. 14. The name of metals ends with-ate under which of the following conditions A) All ligands in the complex are negative. B) All ligands in the complex are neutral. C) The coordination sphere is having negative charge on it. D) The coordination sphere is having positive charge on it. Show Answer Correct Answer: C) The coordination sphere is having negative charge on it. 15. Which of the following is a characteristic of coordination compounds? A) They are always colorless. B) They do not conduct electricity. C) They are only soluble in organic solvents. D) They can exhibit isomerism. Show Answer Correct Answer: D) They can exhibit isomerism. 16. The ..... sphere is enclosed in brackets in formulas for complex species, and it includes the central metal ion plus the coordinated groups. A) Ligand. B) Donor. C) Coordination. D) Chelating. Show Answer Correct Answer: D) Chelating. 17. Strong field ligand is which give small splitting energy A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 18. The energy diagram of the d orbital energy splitting complexes in tetrahedral geometry, shows the d orbitals with higher in energy (t$_{2g}$) which refer to ..... d orbitals A) Dz$^{2}$. B) Dxy$_{, }$ dxz and dyz. C) Dz$^{2}$ and dx$^{2}$-y$^{2}$. D) Dxy$_{ }$and dxz. Show Answer Correct Answer: B) Dxy$_{, }$ dxz and dyz. 19. How are coordination compounds used in medical applications? A) Coordination compounds are used in agricultural fertilizers. B) Coordination compounds are used in medical imaging and chemotherapy. C) Coordination compounds are used in construction materials. D) Coordination compounds are used in food preservation. Show Answer Correct Answer: B) Coordination compounds are used in medical imaging and chemotherapy. 20. An example of ambidentate ligand A) CN. B) En. C) ONO. D) BOTH A AND C. Show Answer Correct Answer: D) BOTH A AND C. 21. What are the applications of coordination compounds in industrial processes? A) Food preservation. B) Water purification. C) Applications of coordination compounds include catalysis, metal extraction, dye production, pharmaceuticals, and fertilizers. D) Plastic manufacturing. Show Answer Correct Answer: C) Applications of coordination compounds include catalysis, metal extraction, dye production, pharmaceuticals, and fertilizers. 22. Reaction of ethyl chloride with sodium leads to A) Ethane. B) N-pentane. C) Propane. D) N-butane. Show Answer Correct Answer: D) N-butane. 23. What is the number of ligand donor atoms to which the metal is directly bonded in a complex called? A) Ligandicity. B) Coordination number. C) Chelation. D) Ambidenticity. Show Answer Correct Answer: B) Coordination number. 24. What does EAN rule stand for in the context of coordination compounds? A) Energy Absorption Number. B) Effective Atomic Number. C) Equilibrium Atomic Number. D) Electron Affinity Number. Show Answer Correct Answer: B) Effective Atomic Number. 25. What is the correct name for [Cr(H2O)6]Cl3? A) Trihydroxochromium(III) sulfate. B) Dihydroxochromium(III) bromide. C) Pentaaquachromium(II) chloride. D) Hexaaquachromium(III) chloride. Show Answer Correct Answer: D) Hexaaquachromium(III) chloride. 26. Which compound is zero valent metal complex? A) K3[Fe(CN)6]. B) [Cu(NH3)4]SO4. C) [Ni(CO)4]. D) [Pt(NH3)2Cl2]. Show Answer Correct Answer: C) [Ni(CO)4]. 27. Octahedral complex of Cr (III) will be A) Sp$^{3}$d$^{2 }$in case of weak field ligand. B) D$^{2}$sp$^{3}$ in case of strong ligand. C) D$^{2}$sp$^{3}$ always. D) Always colourless complexes. Show Answer Correct Answer: C) D$^{2}$sp$^{3}$ always. 28. The magnetic moment of [NiX4] 2-ion is found to be zero. Then the metal of the complex ion is (X = monodentate anionic ligand) A) D2 sp hybridized. B) Sp3 hybridized. C) Spd2 hybridised. D) Dsp2 hybridized. Show Answer Correct Answer: D) Dsp2 hybridized. 29. The correct formula of pentaammineaquachromium (III) chloride is A) [Cr(H$_{2}$O)(NH$_{3}$)$_{5}$]Cl$_{2}$. B) [Cr(H$_{2}$O)(NH$_{3}$)$_{5}$]Cl$_{3}$. C) [Cr(H$_{2}$O)$_{2}$(NH$_{3}$)$_{4}$]Cl$_{3}$. D) [Cr(H$_{2}$O)$_{5}$(NH$_{3}$)]Cl$_{3}$. Show Answer Correct Answer: B) [Cr(H$_{2}$O)(NH$_{3}$)$_{5}$]Cl$_{3}$. 30. Which of the following complexes do not follow EAN rule? A) Ni(CO)$_{4}$. B) [Fe(CN)$_{6}$]$^{4-}$. C) [Fe(CN)$_{6}$]$^{3-}$. D) [PdCl$_{4}$]$^{2-}$. Show Answer Correct Answer: C) [Fe(CN)$_{6}$]$^{3-}$. 31. What is the main characteristic of a homoleptic complex? A) Contains only one type of ligand. B) Has a coordination number of 4. C) Contains multiple types of ligands. D) Is always neutral. Show Answer Correct Answer: A) Contains only one type of ligand. 32. K4[Fe(CN)6 ] is a: A) Complex compound. B) Double salt. C) Acid. D) Base. Show Answer Correct Answer: A) Complex compound. 33. Which is the simplest model we can use to explain the strength of ligands of coordination compounds? A) Crystal-Field model. B) Valence Bond model. C) Ligand-Field model. D) Thailand's next top model. Show Answer Correct Answer: C) Ligand-Field model. 34. Which complex can show cis-trans isomerism? A) [Zn(H2O)6]2+. B) [Ni(CN)4]2-. C) [Cr(en)3]3+. D) [Pt(NH3)2Cl2]. Show Answer Correct Answer: D) [Pt(NH3)2Cl2]. 35. A complex with a non-zero spin magnetic moment typically indicates which characteristic? A) It is diamagnetic. B) It has a square planar geometry. C) It contains unpaired electrons. D) It is an inner orbital complex. Show Answer Correct Answer: C) It contains unpaired electrons. 36. Select the correct IUPAC name for:[Co(NH$_{3}$)$_{6}$]$^{2+}$ A) Hexammoniacobalt(II) ion. B) Hexaamminecobaltate(II) ion. C) Hexammoniacobaltate(II) ion. D) Hexaamminecobalt(II) ion. Show Answer Correct Answer: D) Hexaamminecobalt(II) ion. 37. Complex with Sp3 hybridization has A) Square planar geometry. B) Tetrahedral geometry. C) Trigonal bipyramidal geometry. D) Octahedral geometry. Show Answer Correct Answer: B) Tetrahedral geometry. 38. What is the role of the central metal ion in a coordination compound? A) It has no significant role in the compound. B) It serves as the core to which ligands are attached. C) It provides the primary source of color in the compound. D) It acts as a solvent for the ligands. Show Answer Correct Answer: B) It serves as the core to which ligands are attached. 39. Which of the following is the correct IUPAC name for [Fe(CN)$_{6}$]$^{4-}$? A) Hexacyanoiron(IV). B) Hexacyanoiron(II). C) Hexacyanidoferrate(II). D) Hexacyanoferrate(II). Show Answer Correct Answer: C) Hexacyanidoferrate(II). 40. Which of these ions is violet in colour? A) VO$_{2}$$^{+}$. B) V$^{2+}$. C) VO$^{2+}$. D) V$^{3+}$. Show Answer Correct Answer: B) V$^{2+}$. 41. When 1 mol of CrCl3.6H2O is treated with excess of AgNO3, 3 mol of AgCl is obtained. The formula of the complex is A) [CrCl3(H2O)3].3H2O. B) [CrCl2(H2O)4]Cl.2H2O. C) [Cr(H2O)6]Cl3. D) CrCl(H2O)5]Cl2.H2O. Show Answer Correct Answer: C) [Cr(H2O)6]Cl3. 42. Which shows cis-trans isomerism? A) [Zn(NH3)4]2+. B) [Ni(CO)4]. C) [Fe(CN)6]4-. D) [Pt(NH3)2Cl2]. Show Answer Correct Answer: D) [Pt(NH3)2Cl2]. 43. The number of en ligands dative covalently bonded to Cu in [Cu(en)$_{3}$]$^{2+}$ is A) 3. B) 6. C) 2. D) None of the above. Show Answer Correct Answer: A) 3. 44. What is the role of coordination compounds in biological systems? A) Metal ion transport. B) Energy production. C) DNA replication. D) Protein synthesis. Show Answer Correct Answer: A) Metal ion transport. 45. In K$_{4}$[Fe(CN)$_{6}$], Fe is in the form of A) Neutral complex. B) An atom. C) Cationic complex. D) Anionic complex. Show Answer Correct Answer: D) Anionic complex. 46. Which shows optical isomerism? A) [Fe(CN)6]4-. B) [Ni(CO)4]. C) [Co(en)3]3+. D) [Pt(NH3)2Cl2]. Show Answer Correct Answer: C) [Co(en)3]3+. 47. The correct IUPAC name of [Pt(NH$_{3}$)$_{2}$Cl$_{2}$] is A) Diamminedichloridoplatinum (IV). B) Dichloridodiammineplatinum (IV). C) Diamminedichloridoplatinum (IV). D) Diamminedichloridoplatinum (II). Show Answer Correct Answer: D) Diamminedichloridoplatinum (II). 48. What type of compound is formed when K2SO4 and Al2(SO4)3 combine? A) Hydrate. B) Simple salt. C) Complex compound. D) Double salt. Show Answer Correct Answer: D) Double salt. 49. What is the coordination number of a metal ion? A) The coordination number refers to the size of the metal ion. B) The coordination number is the total charge of the metal ion. C) The coordination number indicates the oxidation state of the metal. D) The coordination number of a metal ion is the number of ligands bonded to it. Show Answer Correct Answer: D) The coordination number of a metal ion is the number of ligands bonded to it. 50. Which of the following do not shows the Geometrical isomerism A) Square planar complexes. B) Octahedral complexes. C) Tetrahedral complexes. D) None of the above. Show Answer Correct Answer: C) Tetrahedral complexes. 51. What is the primary valence in coordination compounds? A) The oxidation state of the metal. B) The number of ligands. C) The spatial arrangement of ligands. D) The coordination number. Show Answer Correct Answer: A) The oxidation state of the metal. 52. The coordination number and the oxidation state of the element 'E' in the complex [E(en)$_{2}$(C$_{2}$O$_{4}$)]NO$_{2}$ (where (en) is ethylene diamine) are, respectively A) 4 and 2. B) 4 and 3. C) 6 and 3. D) 6 and 2. Show Answer Correct Answer: C) 6 and 3. 53. Which ligand is weakest? A) I-. B) NH3. C) CN-. D) H2O. Show Answer Correct Answer: A) I-. 54. Name the common types of ligands based on their donor atoms. A) Hexadentate. B) Monodentate, Bidentate, Tridentate, Polydentate, Ambidentate. C) Tetradentate. D) Decadentate. Show Answer Correct Answer: B) Monodentate, Bidentate, Tridentate, Polydentate, Ambidentate. 55. What is the IUP name of the coordination compound 'Diamine Silver(I) Chloride'? A) Diamine Silver(I) Chloride. B) Silver Diamine Chloride(I). C) Diamine Silver(II) Chloride. D) Silver Diamine Chloride. Show Answer Correct Answer: A) Diamine Silver(I) Chloride. 56. How does ionization energy change down a transition group? A) It increases. B) It decreases. C) It remains constant. D) None of the above. Show Answer Correct Answer: A) It increases. 57. Hybridisation of [Ni(CN)4]2-? A) Sp3. B) Sp3d. C) D2sp3. D) Dsp2. Show Answer Correct Answer: D) Dsp2. 58. What is the primary valency of the compound [Co(NH3)6]Cl3 A) 1. B) 2. C) 4. D) 3. Show Answer Correct Answer: D) 3. 59. What is the effect of ligand denticity on the stability of coordination compounds? A) Only monodentate ligands can stabilize coordination compounds. B) Lower denticity always results in more stable compounds. C) Denticity has no effect on the stability of coordination compounds. D) Higher denticity generally increases stability due to more bonding interactions. Show Answer Correct Answer: D) Higher denticity generally increases stability due to more bonding interactions. 60. Choose the correct IUPAC name for [Cr(H2O)5Cl]Cl2. A) Pentaaquachloro chromium(III) chloride. B) Chloropentaaquachromate(III). C) Pentaaquachloro chromium(III). D) Pentaaquachlorochromium(III) chloride. Show Answer Correct Answer: D) Pentaaquachlorochromium(III) chloride. ← 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 8Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books