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 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 5 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following ligands is classified as a strong field ligand? A) Chloride. B) Water. C) Ammonia. D) Cyanide. Show Answer Correct Answer: D) Cyanide. 2. Do coordination compounds have special shapes? A) Coordination compounds do not have defined structures. B) No, coordination compounds are always linear. C) Yes, coordination compounds have special shapes. D) All coordination compounds are spherical in shape. Show Answer Correct Answer: C) Yes, coordination compounds have special shapes. 3. What is the hybridization of a coordination compound with the formula [Co(NH3)6]Cl3? A) D2sp3. B) Dsp2. C) Sp3d2. D) Sp3. Show Answer Correct Answer: A) D2sp3. 4. What is the trend in electronegativity from Period 4 to Period 5? A) Electronegativity increases. B) Electronegativity decreases. C) Electronegativity remains the same. D) None of the above. Show Answer Correct Answer: A) Electronegativity increases. 5. IUPAC name of Na3[Al(C2O4)3] A) Trisodium trioxalatoaluminate(III). B) Sodium trioxalatoaluminium (III). C) Sodium trioxalatoaluminate(III). D) Sodium trioxalatoaluminate(II). Show Answer Correct Answer: C) Sodium trioxalatoaluminate(III). 6. Linkage isomerism arises in a coordination compound containing which type of ligand? A) Monodentate ligand. B) Ambidentate ligand. C) Chelating ligand. D) Polydentate ligand. Show Answer Correct Answer: B) Ambidentate ligand. 7. Can you name a type of coordination compound? A) [Cu(NH3)4]SO4. B) NaCl. C) FeCl3. D) H2O. Show Answer Correct Answer: A) [Cu(NH3)4]SO4. 8. How do you denote the oxidation state of a metal in a coordination compound? A) The oxidation state is shown as a subscript next to the metal symbol. B) The oxidation state is represented by a color code on the compound. C) The oxidation state is denoted by a Roman numeral in parentheses after the metal's name. D) The oxidation state is indicated by a letter code before the metal's name. Show Answer Correct Answer: C) The oxidation state is denoted by a Roman numeral in parentheses after the metal's name. 9. What is the name of the complex [Ag(NH3)2][Ag(CN)2]? A) Diaminesilver(II)dicyanoargentate(II). B) Diaminesilver(I)dicyanoargentate(II). C) Diaminesilver(II)dicyanoargentate(I). D) Diaminesilver(I)dicyanoargentate(I). Show Answer Correct Answer: D) Diaminesilver(I)dicyanoargentate(I). 10. Which of the following is NOT a postulate of Werner's theory of coordination compounds? A) Primary valence is always equal to the secondary valence. B) Secondary valence is equal to the coordination number. C) Secondary valences are non-ionisable. D) Primary valences are ionisable. Show Answer Correct Answer: A) Primary valence is always equal to the secondary valence. 11. Define formation constant and its importance in coordination chemistry. A) The formation constant indicates the color of a metal-ligand complex. B) The formation constant is used to measure the temperature of a solution. C) The formation constant describes the size of a metal ion in coordination chemistry. D) The formation constant measures the stability of a metal-ligand complex in coordination chemistry. Show Answer Correct Answer: D) The formation constant measures the stability of a metal-ligand complex in coordination chemistry. 12. In the complex formation, the central metal atom / ion acts as A) Lewis base. B) Bronsted base. C) Lewis acid. D) Bronsted acid. Show Answer Correct Answer: C) Lewis acid. 13. In which one of the following species does the transition metal ion have d$^{3}$ electronic configuration? A) [Cr(NH$_{3}$)$_{6}$]$^{3+}$. B) [Fe(CN)$_{6}$]$^{3-}$. C) [Co(OH$_{2}$)$_{6}$]$^{2+}$. D) [CoF$_{6}$]$^{3-}$. Show Answer Correct Answer: A) [Cr(NH$_{3}$)$_{6}$]$^{3+}$. 14. Which term describes a complex that uses inner d orbitals in hybridisation? A) High spin complex. B) Spin free complex. C) Low spin or spin paired complex. D) Outer orbital complex. Show Answer Correct Answer: C) Low spin or spin paired complex. 15. The isomers that have differ in only arrangement of ligands coordinated to metal cation is called A) Geometrical isomers. B) Stereoisomers. C) Optical isomer. D) Structural isomers. Show Answer Correct Answer: B) Stereoisomers. 16. Ligands and central metal ions are respectively A) Lewis base and lewis acid. B) Lewis acid and lewis base. C) Both lewis acid. D) Bothlewis base. Show Answer Correct Answer: A) Lewis base and lewis acid. 17. What is the correct name for [CuCl2(NH3)2]? A) Ammonium dichlorocuprate(II). B) Diammine copper(I) dichloride. C) Tetraammonia copper(II) chloride. D) Bis(ammonia)dicopper(II) dichloride. Show Answer Correct Answer: D) Bis(ammonia)dicopper(II) dichloride. 18. Which geometry has 90$^\circ$ angles? A) Linear. B) Trigonal planar. C) Octahedral. D) Tetrahedral. Show Answer Correct Answer: C) Octahedral. 19. Which has zero CFSE? A) D0. B) D10. C) D5 high spin. D) All. Show Answer Correct Answer: D) All. 20. What is the hybridization of [FeCl6]4-and [Fe(CN)6]4-respectively, given their spin magnetic moments are 4.9 BM and 0 BM? A) Sp3d2 and d2sp3. B) D2sp3 and sp3d2. C) Sp3 and dsp2. D) Dsp2 and sp3. Show Answer Correct Answer: A) Sp3d2 and d2sp3. 21. NaKSO4 is an example of A) Acid salt. B) Complex salt. C) Double salt. D) Mixed salt. Show Answer Correct Answer: D) Mixed salt. 22. What is the IUPAC name for [Co(NH3)5Cl]Cl2? A) Hexamminecobalt(III) chloride. B) Tetraamminecobalt(II) chloride. C) Pentaamminechlorocobalt(III) chloride. D) Pentaamminecobalt(II) chloride. Show Answer Correct Answer: C) Pentaamminechlorocobalt(III) chloride. 23. What is the coordination number of the metal in [Fe(CN)$_{6}$]$^{4-}$? A) 8. B) 6. C) 4. D) 2. Show Answer Correct Answer: B) 6. 24. Which of the following factors tends to increase the stability of metal ion complexes A) Higher ionic radius of the metal ion. B) Higher charge/size ratio of the metal ion. C) Lower ionization potential of the metal ion. D) Lower basicity of the ligand. Show Answer Correct Answer: B) Higher charge/size ratio of the metal ion. 25. Zn complexes are white in colour. Zn is A) A transition metal. B) Is a transition metal will all electrons filled. C) Is a transition metal but transition of electrons does not occur. D) Not a transition metal. Show Answer Correct Answer: B) Is a transition metal will all electrons filled. 26. How do you determine the coordination number of a metal in a coordination compound? A) By the solubility of the compound in water. B) By analyzing the color of the compound. C) By measuring the size of the metal ion. D) By counting the number of ligands attached to the metal ion. Show Answer Correct Answer: D) By counting the number of ligands attached to the metal ion. 27. What happens when you mix colors in coordination compounds? A) Mixing colors in coordination compounds results in a brighter shade of the original color. B) Colors in coordination compounds do not change when mixed together. C) Mixing colors in coordination compounds creates a colorless solution. D) Mixing colors in coordination compounds results in a new color based on the absorption properties of the ligands and metal. Show Answer Correct Answer: D) Mixing colors in coordination compounds results in a new color based on the absorption properties of the ligands and metal. 28. What is the oxidation state of cobalt in [Co(NH3)6]Cl3? A) +4. B) +1. C) +2. D) +3. Show Answer Correct Answer: D) +3. 29. What is the magnetic nature of a coordination compound with all electrons paired? A) Diamagnetic. B) Paramagnetic. C) Antiferromagnetic. D) Ferromagnetic. Show Answer Correct Answer: A) Diamagnetic. 30. Which type of isomerism is not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion? A) Optical isomerism. B) Geometrical isomerism. C) Ionization isomerism. D) Linkage isomerism. Show Answer Correct Answer: B) Geometrical isomerism. 31. What is the role of a ligand in a coordination compound? A) Acting as a counter ion. B) Accepting a pair of electrons from the central metal atom. C) Providing stability to the compound. D) Donating a pair of electrons to the central metal atom. Show Answer Correct Answer: D) Donating a pair of electrons to the central metal atom. 32. Name a common example of a coordination compound used in medicine. A) Aspirin. B) Ibuprofen. C) Cisplatin. D) Penicillin. Show Answer Correct Answer: C) Cisplatin. 33. The oxidation state of Cr in [Cr(NH3)4Cl2]+ is A) +1. B) +3. C) 0. D) +2. Show Answer Correct Answer: B) +3. 34. According to Warner's Theory, what are the two types of valencies that a metal atom in a coordination compound has? A) Primary and secondary. B) Inner and outer. C) Positive and negative. D) Ionic and covalent. Show Answer Correct Answer: A) Primary and secondary. 35. The coordination compounds, [Co(NH$_{3}$)$_{6}$]$^{3+}$, [Cr(CN)$_{6}$]$^{3-}$ and [Cr(NH$_{3}$)$_{6}$]$^{3+}$, [Co(CN)$_{6}$]$^{3-}$ are examples of ..... A) Ionization isomerism. B) Coordination isomerism. C) Linkage isomerism. D) Geometrical isomerism. Show Answer Correct Answer: B) Coordination isomerism. 36. What is the coordination number of the complex [Co(NH3)6]3+? A) 4. B) 6. C) 2. D) 8. Show Answer Correct Answer: B) 6. 37. Which type of isomerism is exhibited by a coordination complex with optical isomers? A) Geometrical isomerism. B) Optical isomerism. C) Coordination isomerism. D) Structural isomerism. Show Answer Correct Answer: B) Optical isomerism. 38. What is the expected melting point of a pure compound? A) Unpredictable. B) Variable. C) Sharp. D) Broad. Show Answer Correct Answer: C) Sharp. 39. [MnCl4]2-Complex Having ..... Geometry A) Octahedral. B) Trigonal planer. C) Tetrahedral. D) Square planar. Show Answer Correct Answer: C) Tetrahedral. 40. Which of the following is a characteristic of bidentate ligands? A) They can bind through two atoms. B) They are always neutral. C) They can only bind through one atom. D) They cannot form chelate rings. Show Answer Correct Answer: A) They can bind through two atoms. 41. According to Werner's theory, what is the term used for the number of groups bound directly to the metal ion in coordination compounds? A) Primary valence. B) Coordination polyhedra. C) Secondary valence. D) Counter ions. Show Answer Correct Answer: C) Secondary valence. 42. Which is paramagnetic? A) [Zn(NH3)4]2+. B) [Fe(CN)6]4-. C) [Ni(CO)4]. D) [CoF6]3-. Show Answer Correct Answer: D) [CoF6]3-. 43. Which metal shows maximum complexes? A) Na. B) Fe. C) Zn. D) Mg. Show Answer Correct Answer: B) Fe. 44. Cis-trans isomerism is exhibited by which one of the following? A) [Pd(NH$_{3}$)$_{3}$CI]$^{+}$. B) [Co(NH$_{3}$)$_{5}$CI]$^{2+}$. C) [Fe(CN)$_{6}$]$^{3-}$. D) None of these. Show Answer Correct Answer: A) [Pd(NH$_{3}$)$_{3}$CI]$^{+}$. 45. Given the list of ligands and their corresponding names, choose the pair that disagree. A) LIGANDNAME. B) OH-hydroxo. C) CN$^{-}$cyanide. D) Cl$^{-}$chloro. E) H$_{2}$O aqua. Show Answer Correct Answer: C) CN$^{-}$cyanide. 46. What is the main difference between isomers in coordination compounds? A) Isomers have different chemical formulas. B) Isomers have different arrangements of atoms but the same chemical formula. C) Isomers have different numbers of atoms. D) Isomers have different types of elements. Show Answer Correct Answer: B) Isomers have different arrangements of atoms but the same chemical formula. 47. Which statement best explains; what is meant by the term 'complex ion'. A) A cation. B) An ion with 6 electrons. C) A anion. D) A central metal ion surrounded by ligands. Show Answer Correct Answer: D) A central metal ion surrounded by ligands. 48. What is the oxidation state of Fe in [Fe(CN)$_{6}$]$^{4-}$? A) +2. B) 0. C) +3. D) +4. Show Answer Correct Answer: A) +2. 49. What is the reason that tetrahedral complexes do not show geometrical isomerism? A) The relative positions of the unidentate ligands attached to the central metal atom are the same with respect to each other. B) Tetrahedral complexes are always chiral. C) Tetrahedral complexes have only one type of ligand. D) Tetrahedral complexes cannot form mirror images. Show Answer Correct Answer: A) The relative positions of the unidentate ligands attached to the central metal atom are the same with respect to each other. 50. Which of the following complexes is an example of a heteroleptic complex? A) [Ag(CN)2]-. B) [NiCl2(NH3)2]. C) [Co(NH3)6]3+. D) [Cu(H2O)4]2+. Show Answer Correct Answer: B) [NiCl2(NH3)2]. 51. How do you name coordination compounds according to IUPAC rules? A) List the metal first, then ligands, without oxidation state. B) Name ligands first, then the metal, indicating oxidation state; modify metal name if complex is anionic. C) Use Roman numerals for ligands and avoid metal names. D) Name the complex as a whole without specifying components. Show Answer Correct Answer: B) Name ligands first, then the metal, indicating oxidation state; modify metal name if complex is anionic. 52. The complex [Fe(CN)$_{6}$]$^{4-}$ has how many unpaired electrons? A) 2. B) 0. C) 1. D) 4. Show Answer Correct Answer: B) 0. 53. What is the coordination number of an electron acceptor in an addition reaction? A) Changes in oxidation state. B) Increases. C) Unchanged. D) Decreases. Show Answer Correct Answer: B) Increases. 54. The IUPAC name of Hg[Co(SCN)$_{4}$] is A) Mercury (I) tetrathiocyanato-S-cobaltate. B) Mercury (I) tetrathiocyanato-N-cobaltate. C) Mercury (I) tetraisothiocyanato-N-cobaltate. D) Mercury (II) tetrathiocyanato-S-cobaltate. Show Answer Correct Answer: A) Mercury (I) tetrathiocyanato-S-cobaltate. 55. Tetraammine zinc sulphate an example of A) Complex salt. B) Mixed salt. C) Acid salt. D) Double salt. Show Answer Correct Answer: A) Complex salt. 56. What is the spatial arrangement called in modern formulations of coordination compounds? A) Coordination lattice. B) Coordination polyhedra. C) Coordination sphere. D) Coordination shell. Show Answer Correct Answer: B) Coordination polyhedra. 57. What is the role of chelating agents in coordination chemistry? A) Chelating agents are primarily used as catalysts in chemical reactions. B) Chelating agents stabilize metal ions by forming multiple bonds, enhancing solubility and preventing precipitation. C) Chelating agents only bind to non-metal ions. D) Chelating agents are used to increase the temperature of reactions. Show Answer Correct Answer: B) Chelating agents stabilize metal ions by forming multiple bonds, enhancing solubility and preventing precipitation. 58. The crystal field stabilization energy (CFSE) in [Co(SCN)$_{6}$ ]$^{3-}$ is A) 0. B) 4. C) 24. D) 18. Show Answer Correct Answer: B) 4. 59. How do you name the ligand NH2CH2COOH? A) Alanine. B) Serine. C) Aspartic acid. D) Glycine. Show Answer Correct Answer: D) Glycine. 60. A group of atoms can function as a ligand if A) They are free radicals. B) They are cations. C) They are Lewis acids. D) They are capable of donating lone pair of electrons to form coordinate bond. Show Answer Correct Answer: D) They are capable of donating lone pair of electrons to form coordinate bond. ← 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 6Class 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