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 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 11 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the name of the complex [Fe(C2O4)3]3-? A) Tris(acetato)iron(III). B) Bis(oxalato)iron(II). C) Tris(oxalato)iron(III). D) Tris(citrate)iron(III). Show Answer Correct Answer: C) Tris(oxalato)iron(III). 2. Which scientist is credited with formulating ideas about the structures of coordination compounds? A) Linus Pauling. B) Alfred Werner. C) Dmitri Mendeleev. D) Marie Curie. Show Answer Correct Answer: B) Alfred Werner. 3. Which of the following is a characteristic of chelate ligands? A) They bind through a single donor atom. B) They can form rings with the metal ion. C) They are always unidentate. D) They cannot form coordinate bonds. Show Answer Correct Answer: B) They can form rings with the metal ion. 4. Which ligand forms the most stable complex with a metal ion? A) CO. B) Cl-. C) NH3. D) H2O. Show Answer Correct Answer: A) CO. 5. What is the significance of the chelate effect in coordination chemistry? A) It decreases the coordination number. B) It has no impact on complex formation. C) It enhances the stability of metal-ligand complexes. D) It increases the solubility of complexes. Show Answer Correct Answer: C) It enhances the stability of metal-ligand complexes. 6. What is the coordination number in coordination compounds? A) The number of ligands attached to the central metal ion. B) The total number of electrons in the compound. C) The charge of the complex ion. D) The number of isomers present. Show Answer Correct Answer: A) The number of ligands attached to the central metal ion. 7. Which of the following pairs represents linkage isomers? A) [Pd(P Ph3)2 (NCS)2] and [Pd(P Ph3)2(SCN)2]. B) [Co (NH3)5 NO3]SO4 and [Co(NH3)5SO4] NO3. C) [Pt Cl2(NH3)4]Br2 and [PtBr2(NH3)4]Cl2. D) [Cu(NH3)4] [PtCl4] and [Pt(NH3)4] [CuCl4]. Show Answer Correct Answer: A) [Pd(P Ph3)2 (NCS)2] and [Pd(P Ph3)2(SCN)2]. 8. When 4.7 moles of [Co(NH$_{3}$)$_{5}$Cl]Cl$_{2}$ is dissolved in water, how many moles of ions are in solution? A) 42. B) 14. C) 1.7. D) 2.7. E) 9.4. Show Answer Correct Answer: B) 14. 9. Which term describes molecules or ions that cannot be superimposed on their mirror images? A) Achiral. B) Chiral. C) Isotopic. D) Facial. Show Answer Correct Answer: B) Chiral. 10. Pick out the odd one out. A) Cl$^{-}$. B) SO$_{4}$$^{2-}$. C) C$_{2}$O$_{4}$$^{2-}$. D) CN$^{-}$. Show Answer Correct Answer: C) C$_{2}$O$_{4}$$^{2-}$. 11. Which of the following ligands is considered an ionisable ligand? A) Ethylene diamine. B) Water. C) Ammonia. D) Chloride ion. Show Answer Correct Answer: D) Chloride ion. 12. What type of hybridization occurs in the complex [Ni(CN)4]2-? A) Sp2. B) Dsp2. C) Sp3. D) D2sp3. Show Answer Correct Answer: B) Dsp2. 13. Which ligand binds to a metal atom through two donor atoms? A) CN-. B) H2O. C) NH3. D) CO. Show Answer Correct Answer: B) H2O. 14. Which of the following has square planar structure? A) [NiCl$_{4}$]$^{2-}$. B) [Ni(CO)$_{4}$]. C) [Ni(CN)$_{4}$]$^{2-}$. D) None of these. Show Answer Correct Answer: C) [Ni(CN)$_{4}$]$^{2-}$. 15. What does the molar ionic conductance measure? A) Elemental composition. B) Conductance of 1 mole of ions. C) Purity of a compound. D) Melting point of a compound. Show Answer Correct Answer: B) Conductance of 1 mole of ions. 16. What is the main product of the reaction between2-methyl propene with HBr A) 2-bromo-2 methyl propane. B) 1-bromo-2 methyl propane. C) 2-bromo butane. D) 1-bromo butane. Show Answer Correct Answer: A) 2-bromo-2 methyl propane. 17. Which theory explains the bonding in coordination compounds? A) Molecular Orbital Theory. B) VSEPR Theory. C) Lewis Acid-Base Theory. D) VBT (Valence Bond Theory). Show Answer Correct Answer: D) VBT (Valence Bond Theory). 18. Consider the coordination compound, K$_{2}$[Cu(CN)$_{4}$]. A coordinate covalent bond exists between A) K$^{+}$ and CN$^{-}$. B) Cu$^{2+}$ and CN$^{-}$. C) K$^{+}$ and [Cu(CN)$_{4}$]$^{2-}$. D) C and N in CN$^{-}$. Show Answer Correct Answer: B) Cu$^{2+}$ and CN$^{-}$. 19. Which is the simplest model we can use to explain the optical properties 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: A) Crystal-Field model. 20. When the ligands move along the x, y and z axes of d orbital in metal ion (octahedral geometry), they approach directly toward or between the lobes. Name the d orbitals that feel less repulsion? A) Dz$^{2}$ and dx$^{2}$-y$^{2 }$. B) Dxy$_{, }$ dxz and dyz. C) Dz$^{2}$. D) Dxy$_{ }$and dxz. Show Answer Correct Answer: B) Dxy$_{, }$ dxz and dyz. 21. What are coordination compounds primarily characterized by? A) The presence of only anionic ligands. B) The absence of any metal ions. C) The formation of complex ions with a central metal atom. D) The presence of only cationic ligands. Show Answer Correct Answer: C) The formation of complex ions with a central metal atom. 22. What is the IUPAC name for the complex [Cr(H2O)4Cl2]+? A) Tetraaquachlorochromium(III). B) Dihydroxydichlorochromium(III). C) Tetrachlorochromium(III). D) Pentaaquachromium(II). Show Answer Correct Answer: A) Tetraaquachlorochromium(III). 23. What is the difference between monodentate and bidentate ligands? A) Monodentate ligands bind through one atom; bidentate ligands bind through two atoms. B) Monodentate ligands can bind through multiple atoms; bidentate ligands can only bind through one. C) Both monodentate and bidentate ligands bind through one atom. D) Monodentate ligands bind through two atoms; bidentate ligands bind through one atom. Show Answer Correct Answer: A) Monodentate ligands bind through one atom; bidentate ligands bind through two atoms. 24. What is the first step in naming coordination compounds according to IUP nomenclature? A) Calculate the oxidation state of the central metal atom. B) Name the counter ion. C) Name the ligand. D) Name the central metal atom. Show Answer Correct Answer: C) Name the ligand. 25. What is the relationship between atomic size and density? A) Density is inversely related to atomic size. B) Density is directly related to atomic size. C) There is no relationship. D) None of the above. Show Answer Correct Answer: A) Density is inversely related to atomic size. 26. Geometry of [PtCl4]2-? A) Octahedral. B) Tetrahedral. C) Linear. D) Square planar. Show Answer Correct Answer: D) Square planar. 27. [Cu(H$_{2}$O)$_{6}$]$^{2+}$ + edta$^{4-}$ <$\rightarrow$[Cu(edta)]$^{2-}$ + 6H$_{2}$O A) The entropy decreases from left to right. B) The entropy increases from right to left. C) The entropy increases from left to right. D) None of the above. Show Answer Correct Answer: C) The entropy increases from left to right. 28. Why is geometrical isomerism not possible in tetrahedral complexes having two different types of unidentate ligands coordinated with the central metal ion? A) The ligands are not attached to the central metal atom. B) The relative positions of the ligands are the same with respect to each other. C) The ligands are not geometrically arranged. D) The ligands are not isomers. Show Answer Correct Answer: B) The relative positions of the ligands are the same with respect to each other. 29. Define the term 'coordination number' in relation to ligands. A) The coordination number is the number of ligand atoms bonded to a central metal atom. B) The coordination number is the distance between the ligand and the metal atom. C) The coordination number refers to the size of the ligand molecule. D) The coordination number is the total number of electrons in a ligand. Show Answer Correct Answer: A) The coordination number is the number of ligand atoms bonded to a central metal atom. 30. Which one of the following coordination compounds isused to inhibit the growth of tumours? A) [(Ph3P)3RhCl]. B) EDTA complex of calcium. C) Cis-platin. D) Trans-platin. Show Answer Correct Answer: C) Cis-platin. 31. Arrange the following compounds in increasing order of their boiling points. (a) iso-butylbromide(b)n-butylbromide (c) tert-butyl bromide A) <(b)<(c). B) <(b)<(a). C) <(a)<(c). D) <(a)<(b). Show Answer Correct Answer: D) <(a)<(b). 32. Which of the following complexes is expected to be diamagnetic? A) [CoCl4]2-. B) [Cu(H2O)6]2+. C) [Fe(CN)6]3-. D) [Ni(CO)4]. Show Answer Correct Answer: D) [Ni(CO)4]. 33. A coordination compound of Cu$^{2+}$ can be described as Cu(NH$_{3}$)$_{x}$SO$_{4}$ and is known to contain 29.92% NH$_{3}$ by mass. The value of x is: A) 2. B) 5. C) 6. D) 4. E) 3. Show Answer Correct Answer: D) 4. 34. The species having tetrahedral shape is A) [Ni(Cl)$_{4}$]$^{2-}$. B) [Ni(CN)$_{4}$]$^{2-}$. C) [Pd(Cl)$_{4}$]$^{2-}$. D) [Pd(CN)$_{4}$]$^{2-}$. Show Answer Correct Answer: A) [Ni(Cl)$_{4}$]$^{2-}$. 35. What is the correct formula for Diamminesilver(I) chloride? A) [Ag(NH$_{3}$)$_{2}$]Cl. B) [Ag(NH$_{3}$)$_{2}$]Cl$_{2}$. C) [Ag(NH$_{3}$)$_{2}$Cl]. D) [Ag(NH$_{3}$)Cl$_{2}$]. Show Answer Correct Answer: A) [Ag(NH$_{3}$)$_{2}$]Cl. 36. Identify the formula for Wilkinson's catalyst used in homogeneous hydrogenation. A) [Rh(PPh3)3Cl]. B) K[Co(NH3)2(NO2)4]. C) [Ir(CO)(PPh3)2Cl]. D) NH4[Cr(NH3)2(NCS)4]. Show Answer Correct Answer: A) [Rh(PPh3)3Cl]. 37. IUAPC name of [CoCl2(NH3)4]+ A) Dichloridotetraammine cobalt(III)ion. B) Tetraammine dichloridocobalt(III). C) Dichloridotetraammine cobalt(III). D) Tetraammine dichloridocobalt(III) ion. Show Answer Correct Answer: D) Tetraammine dichloridocobalt(III) ion. 38. Which name-formula combination is NOT correct? A) FORMULA NAME. B) K[Cr(NH$_{3}$)$_{2}$Cl$_{4}$] potassium diamminetetrachlorochromate(III). C) [Mn(CN)$_{5}$]$^{2-}$pentacyanomanganate(II) ion. D) [Ni(CO)$_{4}$] tetracarbonylnickel(0). E) [Co(NH$_{3}$)$_{4}$(OH$_{2}$)I]SO$_{4 }$tetraammineaquaiodocobalt(III) sulfate. Show Answer Correct Answer: C) [Mn(CN)$_{5}$]$^{2-}$pentacyanomanganate(II) ion. 39. The IUPAC name of NH$_{4}$[AuCl$_{4}$] is A) Ammonium tetrachloroaurium(III). B) Ammonium tetrachloroaurate(III). C) Ammonium tetrachlorogold(III). D) Ammonia tetrachloroaurate(III). Show Answer Correct Answer: B) Ammonium tetrachloroaurate(III). 40. What is the oxidation state of silver in the coordination compound 'Diammine Silver(I) Chloride'? A) 2. B) 1. C) 4. D) 3. Show Answer Correct Answer: B) 1. 41. What is the IUPAC name for [Ag(NH3)2]NO3? A) Diammine silver(I) nitrate. B) Silver(II) nitrate. C) Monoammine silver(I) nitrate. D) Diammine silver(II) sulfate. Show Answer Correct Answer: A) Diammine silver(I) nitrate. 42. Give an example of a chelating ligand and explain its significance. A) Acetic acid (CH3COOH). B) Ethylenediamine (en) is an example of a chelating ligand. C) Sodium chloride (NaCl). D) Ammonia (NH3). Show Answer Correct Answer: B) Ethylenediamine (en) is an example of a chelating ligand. 43. What are the compounds called that retain their identity in both solid and solution states? A) Coordinationcompounds. B) Complexes. C) Doublesalts. D) Additioncompounds. Show Answer Correct Answer: A) Coordinationcompounds. 44. What is the first step in naming an ionic coordination compound? A) Name the central metal atom. B) Name the cation. C) Name the ligands. D) Determine the oxidation state. Show Answer Correct Answer: B) Name the cation. 45. Can you find a coordination compound in your home? A) Copper(II) sulfate. B) Sodium chloride. C) Iron(III) oxide. D) Calcium carbonate. Show Answer Correct Answer: A) Copper(II) sulfate. 46. Which of the following is NOT a common coordination polyhedron? A) Hexagonal. B) Octahedral. C) Square planar. D) Tetrahedral. Show Answer Correct Answer: A) Hexagonal. 47. What is the primary focus of qualitative analysis in coordination compounds? A) Measuring color intensity. B) Determining structure. C) Identifying metal ions. D) Calculating molecular weight. Show Answer Correct Answer: C) Identifying metal ions. 48. What is the hybridization of [NiCl4]2-and [Ni(CN)4]2-respectively, given their spin magnetic moments are 2.8 BM and 0 BM? A) D2sp3 and sp3d2. B) Sp3 and dsp2. C) Dsp2 and sp3. D) Sp3d2 and d2sp3. Show Answer Correct Answer: B) Sp3 and dsp2. 49. CFT views the interaction between metal ions and ligands in complexes in terms of electrostatic ..... and ..... A) Attraction, repulsion. B) Positive, negative. C) Cation, anion. D) None of the above. Show Answer Correct Answer: A) Attraction, repulsion. 50. What is the spin multiplicity of a coordination compound with no unpaired electrons? A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: B) 1. 51. When writing the formula for a coordination entity, what should be done if the ligands are polyatomic? A) Ignore them. B) List them after the metal. C) Enclose their formulas in parentheses. D) Write them in bold. Show Answer Correct Answer: C) Enclose their formulas in parentheses. 52. [Cu(NH3)4]2+ has the following geometry A) Square planar. B) Tetrahedral. C) Octahedral. D) None of these. Show Answer Correct Answer: A) Square planar. 53. What is the coordination number of a metal ion in a complex? A) Number of oxidation states. B) Number of electrons in the outer shell. C) Number of ligands attached. D) Number of protons in the nucleus. Show Answer Correct Answer: C) Number of ligands attached. 54. What is the geometric isomerism observed in octahedral complexes? A) Cyclic and acyclic isomerism. B) Optical isomerism only. C) Geometric and structural isomerism. D) Cis and trans isomerism. Show Answer Correct Answer: D) Cis and trans isomerism. 55. What is the IUPAC name for the complex [Mn(H2O)6]2+? A) Hexachloromanganese(II). B) Manganese(II) sulfate. C) Tetraaquamanganese(II). D) Hexaaquamanganese(II). Show Answer Correct Answer: D) Hexaaquamanganese(II). 56. What is the oxidation state of manganese in [MnO4]-? A) +7. B) +2. C) +4. D) +5. Show Answer Correct Answer: A) +7. 57. -SCN$^{-is an }$ A) Unidentate ligand. B) Bidentate ligand. C) Tridentate ligand. D) Ambidentate ligand. Show Answer Correct Answer: D) Ambidentate ligand. 58. The dehydrobromination of 2-bromobutane givesCH$_{3}$CH = CHCH$_{3}$. The product is A) Hoffmann-Saytzeff product. B) Hofmann product. C) Saytzeff product. D) Markownikoff product. Show Answer Correct Answer: C) Saytzeff product. 59. How is the central metal atom named in IUP nomenclature if the coordination sphere is negatively charged? A) With 'ate' at the beginning. B) With 'ide' at the end. C) With 'ium' at the end. D) With 'ate' at the end. Show Answer Correct Answer: D) With 'ate' at the end. 60. In Werner's theory, what is the secondary valency of a coordination compound? A) The number of ionisable ligands. B) The number of non-ionisable ligands. C) The total number of bonds formed by the central metal atom. D) The coordination number of the metal ion. Show Answer Correct Answer: C) The total number of bonds formed by the central metal atom. ← 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