This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds – Quiz 14 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 14 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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. 2. Which of the following is a bidentate ligand? A) Chloride ion (Cl-). B) Ethylenediamine (C2H8N2). C) Ammonia (NH3). D) Water (H2O). Show Answer Correct Answer: B) Ethylenediamine (C2H8N2). 3. 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. 4. Strong field ligand? A) H2O. B) NH3. C) CN-. D) F-. Show Answer Correct Answer: C) CN-. 5. What is the oxidation state of cobalt in [Co(NH3)5Cl]Cl2? A) 0. B) +2. C) +3. D) +1. Show Answer Correct Answer: C) +3. 6. Identify the double salt A) [Cu(NH$_{3}$)$_{4}$]SO$_{4}$. B) Na$_{2}$ZnO$_{2}$. C) Na$_{2}$SO$_{4}$. D) K$_{2}$SO$_{4}$.Al$_{2}$(SO$_{4}$)$_{3}$.24H$_{2}$O. Show Answer Correct Answer: D) K$_{2}$SO$_{4}$.Al$_{2}$(SO$_{4}$)$_{3}$.24H$_{2}$O. 7. 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. 8. Which type of complex has a central metal atom surrounded by six ligands? A) Cationic complex. B) Anionic complex. C) Neutral complex. D) Chelating complex. Show Answer Correct Answer: C) Neutral complex. 9. In the complex [Fe(H$_{2}$O)$_{6}$]$^{2+}$$_{, the coordination number of the complex is ..... }$ A) 1. B) 2. C) 4. D) 0. Show Answer Correct Answer: B) 2. 10. The IUPAC naming of NH$_{3}$ is ..... A) Amine. B) Ammine. C) Aquo. D) Imine. Show Answer Correct Answer: B) Ammine. 11. What is the IUPAC name for the complex [Ag(NH3)2]NO3? A) Monoammine silver(I) nitrate. B) Diammine silver(II) nitrate. C) Diammine silver(I) nitrate. D) Silver(II) nitrate. Show Answer Correct Answer: C) Diammine silver(I) nitrate. 12. Which of the following acts as a bidentate ligand in complex formation A) Acetate. B) Oxalate. C) Thiocyanate. D) EDTA. Show Answer Correct Answer: B) Oxalate. 13. Which Hydroxide Precipitate is "Amphoteric" A) [Cu(H$_{2}$O)$_{4}$(OH)$_{2}$]. B) [Fe(H$_{2}$O)$_{4}$(OH)$_{2}$]. C) [Cr(H$_{2}$O)$_{3}$(OH)$_{3}$]. D) [Fe(H$_{2}$O)$_{3}$(OH)$_{3}$]. Show Answer Correct Answer: C) [Cr(H$_{2}$O)$_{3}$(OH)$_{3}$]. 14. In which of the following compounds an atom contributes both the electrons to form a bond? A) Covalent compound. B) Ionic compounds. C) Co-ordination compounds. D) Organic compounds. Show Answer Correct Answer: C) Co-ordination compounds. 15. K$_{4}$[Ni(CN)$_{4}$] is A) Potassium tetracyanonickelate(I). B) Potassium tetracyanonickelate(II). C) Potassium tetracyanonickelate(IV). D) Potassium tetracyanonickelate(0). Show Answer Correct Answer: D) Potassium tetracyanonickelate(0). 16. 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. 17. What role do ligands play in coordination compounds? A) Ligands do not influence the properties of coordination compounds. B) Ligands are always negatively charged ions. C) Ligands are molecules or ions that bond to the central metal atom or ion. D) Ligands are the central metal ions in coordination compounds. Show Answer Correct Answer: C) Ligands are molecules or ions that bond to the central metal atom or ion. 18. 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. 19. What is the role of chelating agents in coordination compounds? A) Chelating agents stabilize the metal ion by forming multiple bonds. B) Chelating agents only act as solvents in coordination compounds. C) Chelating agents do not affect the properties of coordination compounds. D) Chelating agents are always negatively charged ions. Show Answer Correct Answer: A) Chelating agents stabilize the metal ion by forming multiple bonds. 20. 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) 0.1102. B) 0.0396. C) 0.0132. D) 0.437. E) 0.0548. Show Answer Correct Answer: C) 0.0132. 21. What factors influence the stability of coordination complexes? A) Temperature and pressure conditions. B) Color of the complex. C) Factors influencing stability include metal ion nature, ligand type, complex geometry, oxidation state, and overall charge. D) Presence of water molecules. Show Answer Correct Answer: C) Factors influencing stability include metal ion nature, ligand type, complex geometry, oxidation state, and overall charge. 22. The central metal ion of K$_{4}$[Fe(CN)$_{6}$] A) Fe$^{+}$. B) Fe$^{2+}$. C) Fe3$^{+}$. D) Fe4$^{+}$. Show Answer Correct Answer: B) Fe$^{2+}$. 23. Which rule helps predict the stability of coordination compounds? A) EAN rule. B) VSEPR rule. C) Hund's rule. D) Pauli exclusion principle. Show Answer Correct Answer: A) EAN rule. 24. 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, 3, 5. B) 3, 3, 2, 7. C) -3, 3, 2, 5. D) -3, 1, 2, 5. E) 3, 3, 2, 5. Show Answer Correct Answer: E) 3, 3, 2, 5. 25. 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. ← 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