This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Science > Chemistry Part Ii > Class 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements – Quiz 3 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 3 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. ..... is used as a catalyst for plastics production A) TiCl4. B) V205. C) Fe. D) Cr. Show Answer Correct Answer: A) TiCl4. 2. Transition elements have very high melting and boiling point due to A) Metallic bond. B) Covalent bond. C) All the above. D) None of the above. Show Answer Correct Answer: A) Metallic bond. 3. The reason for greater range of oxidation states inactinoids is attributed to A) The radioactive nature of actinoids. B) Actinoid contraction. C) 5 f, 6d and 7s levels having comparable energies. D) 4 f and 5d levels being close in energies. Show Answer Correct Answer: C) 5 f, 6d and 7s levels having comparable energies. 4. Which of the following has the maximum number of unpaired electrons? A) Fe$^{2+}$. B) Ti$^{3+}$. C) V$^{3+}$. D) Cu$^{2+}$. Show Answer Correct Answer: A) Fe$^{2+}$. 5. How do the properties of lanthanides differ from those of transition metals? A) Lanthanides differ from transition metals in their electron configuration, oxidation states, atomic sizes, and chemical properties. B) Lanthanides are typically found in nature as pure elements, unlike transition metals. C) Transition metals have higher oxidation states than lanthanides. D) Lanthanides have more complex electron configurations than transition metals. Show Answer Correct Answer: A) Lanthanides differ from transition metals in their electron configuration, oxidation states, atomic sizes, and chemical properties. 6. What is the oxidation state of copper in CuO? A) +1. B) -1. C) 0. D) +2. Show Answer Correct Answer: D) +2. 7. Which of the transition element exhibit only one oxidation state? A) Sc. B) Ti. C) Mn. D) Cu. Show Answer Correct Answer: A) Sc. 8. What is a coordination compound and how is it formed? A) A coordination compound is a simple molecule with no central atom. B) Coordination compounds are formed only in gaseous states. C) A coordination compound consists solely of organic ligands without metals. D) A coordination compound is a complex formed by a central metal atom bonded to ligands. Show Answer Correct Answer: D) A coordination compound is a complex formed by a central metal atom bonded to ligands. 9. What does the coordination number indicate in a complex? A) The spatial arrangement of ligands around the metal ion. B) The number of ligand atoms bonded to the central metal ion. C) The charge of the central metal ion. D) The total number of metal ions in the complex. Show Answer Correct Answer: B) The number of ligand atoms bonded to the central metal ion. 10. Amonst the following outer most configuration of transition metal which shows highest oxidation state? A) 3d54s1. B) 3d34s2. C) 3d54s2. D) 3d64s2. Show Answer Correct Answer: C) 3d54s2. 11. What are the nomenclature rules for naming anionic ligands? A) Anionic ligands are named by modifying the neutral molecule name, using '-o' endings, and applying prefixes for quantity. B) Anionic ligands are named by adding '-ate' to the neutral molecule name. C) Anionic ligands retain the neutral name without modification. D) Anionic ligands are named using '-ic' endings and no prefixes. Show Answer Correct Answer: A) Anionic ligands are named by modifying the neutral molecule name, using '-o' endings, and applying prefixes for quantity. 12. The general electronic configuration [Xn]4f$^{1-14}$ 5d$^{0-1}$ 6s$^{2}$ is of-: A) Actinoids. B) S-block elements. C) D-block elements. D) Lanthanoids. Show Answer Correct Answer: D) Lanthanoids. 13. Aarush is conducting an experiment in his chemistry lab to determine the common oxidation states of transition metals. He has four different sets of data to analyze. Which set of data should he focus on to find the most common oxidation states? A) +1, +2, +3, +4, +5, +6. B) +2, +3, +7, +8. C) +0, +1, +2, +3. D) +1, +2, +3, +10. Show Answer Correct Answer: A) +1, +2, +3, +4, +5, +6. 14. What role do transition metals play in biological systems? A) Transition metals serve as energy sources for cellular respiration. B) Transition metals are primarily used for structural support in cells. C) Transition metals act as essential cofactors in enzymes, facilitate electron transfer, and are involved in oxygen transport. D) Transition metals are only involved in photosynthesis processes. Show Answer Correct Answer: C) Transition metals act as essential cofactors in enzymes, facilitate electron transfer, and are involved in oxygen transport. 15. In which of the following metallic bond is strongest A) Cr. B) Sc. C) V. D) Fe. Show Answer Correct Answer: A) Cr. 16. Calculate the magnetic moment of a divalent ion in aqueous solution if its at.no is 25 A) 5.92 BM. B) 4.9 BM. C) 1.73 BM. D) None of the above. Show Answer Correct Answer: A) 5.92 BM. 17. Anomalous electronic configuration in the 3d series are of A) Cr and Fe. B) Cu and Zn. C) Fe and Cu. D) Cr and Cu. Show Answer Correct Answer: D) Cr and Cu. 18. Which compound contains Cu$^{2}$$^{+}$? A) Compound C-green solid. B) Compound D-white solid. C) Compound B-brown solid. D) Compound A-blue solid. Show Answer Correct Answer: D) Compound A-blue solid. 19. The d-block Elements consists of how many rows? A) 2. B) 3. C) 5. D) 4. Show Answer Correct Answer: D) 4. 20. Which of the following is NOT a transition metal? A) Titanium. B) Gold. C) Radium. D) Iron. Show Answer Correct Answer: C) Radium. ← PreviousRelated QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 1Class 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 2Class 12 Chemistry (Part Ii) Chapter 10 Haloalkanes And Haloarenes QuizClass 12 Chemistry (Part Ii) Chapter 11 Alcohols QuizClass 12 Chemistry (Part Ii) Chapter 12 Aldehydes QuizClass 12 Chemistry (Part Ii) Chapter 13 Amines QuizClass 12 Chemistry (Part Ii) Chapter 14 Biomolecules QuizClass 12 Chemistry (Part Ii) Chapter 15 Polymers Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books