This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds – Quiz 12 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 12 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. 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) Linkage isomerism. B) Coordination isomerism. C) Ionization isomerism. D) Geometrical isomerism. Show Answer Correct Answer: B) Coordination isomerism. 2. What is the coordination number of the complex [Co(NH3)6]3+? A) 8. B) 2. C) 6. D) 4. Show Answer Correct Answer: C) 6. 3. Which type of isomerism is exhibited by a coordination complex with optical isomers? A) Geometrical isomerism. B) Structural isomerism. C) Optical isomerism. D) Coordination isomerism. Show Answer Correct Answer: C) Optical isomerism. 4. What is the expected melting point of a pure compound? A) Sharp. B) Broad. C) Variable. D) Unpredictable. Show Answer Correct Answer: A) Sharp. 5. [MnCl4]2-Complex Having ..... Geometry A) Tetrahedral. B) Octahedral. C) Square planar. D) Trigonal planer. Show Answer Correct Answer: A) Tetrahedral. 6. Which of the following is a characteristic of bidentate ligands? A) They cannot form chelate rings. B) They are always neutral. C) They can bind through two atoms. D) They can only bind through one atom. Show Answer Correct Answer: C) They can bind through two atoms. 7. 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) Secondary valence. C) Coordination polyhedra. D) Counter ions. Show Answer Correct Answer: B) Secondary valence. 8. Which of the following ligands is considered a strong field ligand? A) Iodide (I-). B) Bromide (Br-). C) Chloride (Cl-). D) Cyanide (CN-). Show Answer Correct Answer: D) Cyanide (CN-). 9. Which is paramagnetic? A) [Fe(CN)6]4-. B) [Zn(NH3)4]2+. C) [CoF6]3-. D) [Ni(CO)4]. Show Answer Correct Answer: C) [CoF6]3-. 10. Which metal shows maximum complexes? A) Zn. B) Fe. C) Na. D) Mg. Show Answer Correct Answer: B) Fe. 11. 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]$^{+}$. 12. 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. 13. 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. 14. 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. 15. What is the oxidation state of Fe in [Fe(CN)$_{6}$]$^{4-}$? A) +2. B) +3. C) +4. D) 0. Show Answer Correct Answer: A) +2. 16. 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. 17. Which of the following complexes is an example of a heteroleptic complex? A) [Cu(H2O)4]2+. B) [NiCl2(NH3)2]. C) [Ag(CN)2]-. D) [Co(NH3)6]3+. Show Answer Correct Answer: B) [NiCl2(NH3)2]. 18. 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. 19. The complex [Fe(CN)$_{6}$]$^{4-}$ has how many unpaired electrons? A) 0. B) 1. C) 2. D) 4. Show Answer Correct Answer: A) 0. 20. What is the coordination number of an electron acceptor in an addition reaction? A) Increases. B) Unchanged. C) Decreases. D) Changes in oxidation state. Show Answer Correct Answer: A) Increases. 21. The IUPAC name of Hg[Co(SCN)$_{4}$] is A) Mercury (II) tetrathiocyanato-S-cobaltate. B) Mercury (I) tetrathiocyanato-S-cobaltate. C) Mercury (I) tetrathiocyanato-N-cobaltate. D) Mercury (I) tetraisothiocyanato-N-cobaltate. Show Answer Correct Answer: B) Mercury (I) tetrathiocyanato-S-cobaltate. 22. Tetraammine zinc sulphate an example of A) Acid salt. B) Complex salt. C) Double salt. D) Mixed salt. Show Answer Correct Answer: B) Complex salt. 23. What is the spatial arrangement called in modern formulations of coordination compounds? A) Coordination polyhedra. B) Coordination sphere. C) Coordination shell. D) Coordination lattice. Show Answer Correct Answer: A) Coordination polyhedra. 24. 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. 25. In the coordination compound K4[Ni(CN)4], the oxidation state of nickel is A) +2. B) -1. C) 0. D) +1. Show Answer Correct Answer: C) 0. ← 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