This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 7 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The energy diagram of the d orbital energy splitting complexes in octahedral geometry, shows the d orbitals with higher in energy (e$_{g}$) which refer to ..... d orbitals A) Dz$^{2}$. B) Dxy$_{, }$ dxz and dyz. C) Dz$^{2}$ and dx$^{2}$-y$^{2}$. D) Dxy$_{ }$and dxz. Show Answer Correct Answer: C) Dz$^{2}$ and dx$^{2}$-y$^{2}$. 2. The geometry and magnetic behaviour of the complex Ni(CO)$_{4}$ is A) Square planar and Paramagnetic. B) Tetrahedral and diamagnetic. C) Square planar and diamagnetic. D) Tetrahedral and paramagnetic. Show Answer Correct Answer: B) Tetrahedral and diamagnetic. 3. What is a characteristic property of transition metals? A) Occurrence of multiple oxidation states. B) Single oxidation state. C) No oxidation states. D) None of the above. Show Answer Correct Answer: A) Occurrence of multiple oxidation states. 4. Which of the following is a homoleptic complex? A) [Co(NH3)6]3+. B) [Co(NH3)4Cl2]+. C) [Co(NH3)4(NO2)2]. D) [CoCl2(NH3)4]. Show Answer Correct Answer: A) [Co(NH3)6]3+. 5. In tetrahedral complexes, which orbitals are hybridised to form four equivalent orbitals? A) One s and three p orbitals. B) Two s and two p orbitals. C) Three d and one s orbital. D) Four d orbitals. Show Answer Correct Answer: A) One s and three p orbitals. 6. What is the coordination number of a metal atom in a square planar complex? A) 6. B) 5. C) 7. D) 4. Show Answer Correct Answer: D) 4. 7. Which type of isomerism arises when didentate ligands are present in complexes of formula [MX2 (L-L)2]? A) Optical isomerism. B) Structural isomerism. C) Geometrical isomerism. D) Linkage isomerism. Show Answer Correct Answer: C) Geometrical isomerism. 8. Which ligand causes pairing? A) Weak field. B) Strong field. C) Neutral. D) Anionic. Show Answer Correct Answer: B) Strong field. 9. Which of the following species is not expected to be a ligand A) NO. B) NH$_{4}$$^{+}$. C) NH$_{2}$CH$_{2}$CH$_{2}$NH$_{2}$. D) CO. Show Answer Correct Answer: B) NH$_{4}$$^{+}$. 10. Werner theory explains? A) Bond length. B) Isomerism. C) Conductivity. D) Magnetism. Show Answer Correct Answer: B) Isomerism. 11. What is the IUPAC name for the ligand NH2? A) Amino. B) Nitrogen. C) Amide. D) Amine. Show Answer Correct Answer: A) Amino. 12. The donor sites of (EDTA)$^{4-}$ are? A) O atoms only. B) N atoms only. C) Two N and four O atoms. D) Three N and three O atoms. Show Answer Correct Answer: C) Two N and four O atoms. 13. Coodination number of [Cr(en)3]Cl3 is A) 3. B) 4. C) 6. D) A3 and 6. Show Answer Correct Answer: C) 6. 14. What is the hybridization of the central metal ion in [FeCl6]4-? A) D2sp3. B) Sp3d2. C) Sp3. D) Dsp2. Show Answer Correct Answer: B) Sp3d2. 15. Name a common monodentate ligand. A) Carbon monoxide (CO). B) Water (H2O). C) Chloride (Cl-). D) Ammonia (NH3). Show Answer Correct Answer: B) Water (H2O). 16. Total number of possible isomers in [CoCl$_{2}$ (en)$_{2}$ ]Cl is A) 2. B) 3. C) 4. D) 6. Show Answer Correct Answer: A) 2. 17. What is the purpose of microanalysis in characterization techniques? A) Determine the melting point. B) Determine the percentages of elements. C) Measure conductivity. D) Analyze infrared spectrum. Show Answer Correct Answer: B) Determine the percentages of elements. 18. What is the primary reason for the color of coordination compounds? A) Presence of unpaired electrons. B) Ligand field splitting. C) Metal ion concentration. D) Temperature of the solution. Show Answer Correct Answer: B) Ligand field splitting. 19. Prefixes such as mono, di, tri, etc., are used in naming coordination compounds to indicate what? A) The charge of the compound. B) The number of individual ligands. C) The type of central atom. D) The oxidation state of the metal. Show Answer Correct Answer: B) The number of individual ligands. 20. What is the correct name for [Cr(NH3)6]3+? A) Hexaamine chromium trication. B) Chromium hexaammine three plus. C) Chromium(III) ammine complex cation. D) Hexaamminechromium(III) ion. Show Answer Correct Answer: D) Hexaamminechromium(III) ion. 21. How do coordination compounds play a role in catalysis? A) Coordination compounds enhance reaction rates and selectivity in catalysis. B) Coordination compounds slow down reaction rates in catalysis. C) Coordination compounds only stabilize reactants without enhancing catalysis. D) Coordination compounds have no effect on catalysis processes. Show Answer Correct Answer: A) Coordination compounds enhance reaction rates and selectivity in catalysis. 22. Identify simple salt A) FeCl3. B) NaKSO4. C) Ca(HCO3)2. D) Na2ZnO2. Show Answer Correct Answer: A) FeCl3. 23. What do we call the center of a coordination compound? A) Complex ion. B) Central metal ion. C) Solvent. D) Ligand. Show Answer Correct Answer: B) Central metal ion. 24. What is the shape of Fe(CO)$_{5}$ A) Linear. B) Tetrahedral. C) Square planar. D) Trigonal bipyramidal. Show Answer Correct Answer: D) Trigonal bipyramidal. 25. The oxidation state of Fe in [Fe(CN)6]3-is: A) +2. B) +3. C) +4. D) 0. Show Answer Correct Answer: B) +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 8Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 9Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 10Class 12 Chemistry (Part Ii) Chapter 9 Coordination Compounds Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books