This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds – Quiz 21 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 21 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which ligand can bind through nitrogen or sulphur to give linkage isomerism? A) Cyanide (CN-). B) Thiocyanate (NCS-). C) Ammonia (NH3). D) Oxalate (ox2-). Show Answer Correct Answer: B) Thiocyanate (NCS-). 2. 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. 3. Which type of ligand can donate two pairs of electrons? A) Bidentate. B) Impedentate. C) Polidentate. D) Unidentate. Show Answer Correct Answer: A) Bidentate. 4. 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. 5. 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. 6. The magnetic moment of [NiCl$_{4}$]$^{2-}$ is A) 1.82 B.M. B) 2.82 B.M. C) 4.42 B.M. D) 5.46 B.M. Show Answer Correct Answer: B) 2.82 B.M. 7. The compound having same molecular formula but different structure and hence different physical and chemical properties are called A) Isotopes. B) Isomers. C) Isotones. D) Isobars. Show Answer Correct Answer: B) Isomers. 8. What is the oxidation state of cobalt in the coordination compound 'Bis(ethane-1, 2-diamine) Cobalt(III) Chloride'? A) 2. B) 1. C) 4. D) 3. Show Answer Correct Answer: D) 3. 9. Which ligand gives maximum splitting? A) I-. B) Br-. C) Cl-. D) CN-. Show Answer Correct Answer: D) CN-. 10. The type of isomerism shown by the complex [CoCl2(en)2] is A) Geometrical isomerism. B) Coordination isomerism. C) Linkage isomerism. D) Ionization isomerism. Show Answer Correct Answer: A) Geometrical isomerism. 11. Which of the following statements is true regarding non-ionisable ligands? A) They can dissociate in solution to form ions. B) They do not contribute to the primary valency. C) They are always neutral molecules. D) They can only form bidentate complexes. Show Answer Correct Answer: B) They do not contribute to the primary valency. 12. Consider the coordination compound, Na$_{2}$[Pt(CN)$_{4}$]. The Lewis acid is A) Na$^{+}$. B) Pt. C) Pt$^{2+}$. D) CN$^{-}$. Show Answer Correct Answer: C) Pt$^{2+}$. 13. 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. 14. Which theory can explain the colour of coordination compounds? A) Valence Bond Theory (VBT). B) Crystal Field Theory (CFT). C) Ligand Field Theory (LFT). D) Both b and c. Show Answer Correct Answer: D) Both b and c. 15. Which of the following compounds shows opticalisomerism? A) [Co(CN)6 ]3-. B) [Cr(C2O4 )3 ]3-. C) [ZnCl4 ]2-. D) [Cu(NH3 )4 ]2+. Show Answer Correct Answer: B) [Cr(C2O4 )3 ]3-. 16. 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) One tridentate neutral, three neutral, two anionic. C) Two bidentate neutral, two neutral, two anionic. D) One bidentate neutral, four neutral, two anionic. Show Answer Correct Answer: D) One bidentate neutral, four neutral, two anionic. 17. State the electronic configuration for the Fe2+ cation. A) [Ar]3d4. B) [Ar]3d2. C) [Ar]3d6. D) [Ar]3d7. Show Answer Correct Answer: C) [Ar]3d6. 18. The charge of the cyanide ion is ..... A) 2-. B) 1-. C) 1+. D) 3-. Show Answer Correct Answer: B) 1-. 19. Which of the following statements is true regarding double salts? A) They do not dissociate in solution. B) They contain only one type of ion. C) They are always coordination compounds. D) They dissociate into simple ions in solution. Show Answer Correct Answer: D) They dissociate into simple ions in solution. 20. Can you think of a use for coordination compounds? A) Building materials for construction. B) Medical imaging contrast agents. C) Fertilizers for plants. D) Food preservatives. Show Answer Correct Answer: B) Medical imaging contrast agents. 21. The number of geometrical isomers shown by the octahedral complex [Ma4b2] is A) 0. B) 2. C) 3. D) 4. Show Answer Correct Answer: B) 2. 22. 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. 23. Father of Coordination chemistry A) Werner. B) Arrhenius. C) Einstein. D) Newton. Show Answer Correct Answer: A) Werner. 24. 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. 25. Which of the following compounds can exhibit fac-mer isomerism? A) [Cu(CO)5Cl]+. B) [Co(H2O)3(CO)3] 3+. C) [Fe(CO)5NO2] 2+. D) [Fe(NH3)2(H2O)4] 2+. Show Answer Correct Answer: B) [Co(H2O)3(CO)3] 3+. ← PreviousNext →Related 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 8Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 9Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books