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 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Provide an example of a bidentate ligand and its complex. A) Oxalate (ox) and its complex [Ni(ox)2]2-. B) Acetylacetonate (acac) and its complex [Fe(acac)3]. C) Water (H2O) and its complex [Ag(H2O)2]+. D) Ethylenediamine (en) and its complex [Cu(en)2]2+. Show Answer Correct Answer: D) Ethylenediamine (en) and its complex [Cu(en)2]2+. 2. Which of the following will not act as oxidizing agents?(a) CrO$_{3}$ (b) MoO$_{3}$(c) WO$_{3 }$ (d) CrO$_{4}$$^{2-}$ A) A, b. B) A, d. C) C, d. D) B, c. Show Answer Correct Answer: D) B, c. 3. Titanium shows magnetic moment of 1.73BM in its compound . What is the oxidation state of Ti in the compound A) 2. B) 4. C) 1. D) 3. Show Answer Correct Answer: D) 3. 4. Which of the following is a property of f-block elements? A) They are all radioactive. B) They have low densities. C) They are all non-metals. D) They have completely filled d-orbitals. Show Answer Correct Answer: A) They are all radioactive. 5. Highest oxidation state of manganese flouride is +4 but highest oxidation state in oxides is +7 because A) F is more electronegative than O. B) F doesnot have d orbitals. C) F stabilises lower oxidation state. D) F can form single bond only and O can form multiple bonds. Show Answer Correct Answer: D) F can form single bond only and O can form multiple bonds. 6. Most of the transition metals and theircompounds possess catalytic properties. A) Variable oxidation states. B) Large surface area. C) All the above. D) None of the above. Show Answer Correct Answer: C) All the above. 7. D-block elements loses first elecrton(s) from ..... A) 3p. B) 3s. C) 3d. D) 4s. Show Answer Correct Answer: D) 4s. 8. For M$^{3+}$/M$^{2+}$ the E$^{0}$ values of some metals are given, which of the metal is most stable in +3 oxidation stateCr$^{3+}$/Cr$^{2+}$=-0.41V, Mn$^{3+}$/Mn$^{2+}$ = +1.5 V, Fe$^{3+}$/Fe$^{2+}$ = +0.80 V A) Cr$^{3+}$. B) Fe$^{3+}$. C) Mn$^{3+}$. D) All are equally stable. Show Answer Correct Answer: A) Cr$^{3+}$. 9. What happens to the atomic radii of 3d-series elements as atomic number increases? A) Fluctuates. B) Decreases. C) Remains constant. D) Increases. Show Answer Correct Answer: B) Decreases. 10. What is the significance of the d-block in the periodic table? A) The d-block is irrelevant to chemical reactions and bonding. B) The d-block contains transition metals that are important for their unique chemical properties and applications. C) The d-block contains only nonmetals with similar properties. D) The d-block is primarily composed of noble gases. Show Answer Correct Answer: B) The d-block contains transition metals that are important for their unique chemical properties and applications. 11. The highest magnetic moment shown by the transition metal ion with outer most configuration is A) 3d9. B) 3d7. C) 3d5. D) 3d2. Show Answer Correct Answer: C) 3d5. 12. What is the oxidation state of the central metal in [Cu(NH3)4]2+? A) +3. B) 0. C) +2. D) +1. Show Answer Correct Answer: C) +2. 13. Which series of transition metals includes elements from Scandium to Zinc? A) 3d series. B) 6d series. C) 4d series. D) 5d series. Show Answer Correct Answer: A) 3d series. 14. Which of the following is most stable in aqueous solution? A) V$^{3+}$. B) Cr$^{2+}$. C) Mn$^{2+}$. D) Ti$^{3+}$. Show Answer Correct Answer: C) Mn$^{2+}$. 15. Each rows of d-block elements has ..... elements. A) 5. B) 10. C) 9. D) 8. Show Answer Correct Answer: B) 10. 16. Although Zr is 4d series and Hf is 5d series yet they have similarity in properties due to A) Both belong to d block. B) Both have same number of d electrons. C) Both have similar atomic radii. D) Both belong to the same group. Show Answer Correct Answer: C) Both have similar atomic radii. 17. How does the size of lanthanide ions change across the series? A) The size of lanthanide ions fluctuates randomly across the series. B) The size of lanthanide ions decreases across the series. C) The size of lanthanide ions remains constant across the series. D) The size of lanthanide ions increases across the series. Show Answer Correct Answer: B) The size of lanthanide ions decreases across the series. 18. What is the effect of adding a base to potassium dichromate? A) No effect. B) Color changes to yellow. C) Color changes to green. D) Color changes to orange. Show Answer Correct Answer: B) Color changes to yellow. 19. For decomposition of H2O2 ..... is used as a catalyst A) Fe. B) ZnO2. C) MnO2. D) Cr. Show Answer Correct Answer: C) MnO2. 20. What are the typical uses of lanthanides in modern technology? A) Lanthanides are mainly found in construction materials. B) Lanthanides are typically used in magnets, phosphors, catalysts, batteries, and electronic devices. C) Lanthanides are primarily used in food preservation. D) Lanthanides are exclusively used for water purification. Show Answer Correct Answer: B) Lanthanides are typically used in magnets, phosphors, catalysts, batteries, and electronic devices. 21. Which one of the following is diamagnetic ion? A) Ni$^{2+}$. B) Cu$^{2+}$. C) Zn$^{2+}$. D) Co$^{2+}$. Show Answer Correct Answer: C) Zn$^{2+}$. 22. Which of the following lanthanides are used in MRI technology? A) La. B) Ge. C) Gd. D) Ce. Show Answer Correct Answer: C) Gd. 23. D block elements are known as transition elements because A) They work as good catalyst. B) They form colored compound. C) They can show variable oxidation state. D) They have vacancy in d orbital in one of the oxidation state or in ground state. Show Answer Correct Answer: D) They have vacancy in d orbital in one of the oxidation state or in ground state. 24. Which of the following lanthanoids show +2 oxidation state beside the characteristic oxidation state +3 of lanthanoids A) Yb. B) Ce. C) Cu. D) Ho. Show Answer Correct Answer: A) Yb. 25. What are some applications of d-block elements in everyday life? A) Fertilizers (nitrogen, phosphorus). B) Construction materials (steel, alloys), Electronics (copper wiring, connectors), Catalysts in chemical processes (platinum, nickel), Pigments in paints and dyes (chromium, cobalt). C) Medicinal compounds (aspirin, ibuprofen). D) Food preservatives (sodium, potassium). Show Answer Correct Answer: B) Construction materials (steel, alloys), Electronics (copper wiring, connectors), Catalysts in chemical processes (platinum, nickel), Pigments in paints and dyes (chromium, cobalt). 26. The magnetic moment of Mn$^{2+}$ is A) 2.3. B) 5.9. C) 5.0. D) 4.5. Show Answer Correct Answer: B) 5.9. 27. Identify the incorrect statement among the from the following A) As a result of lanthanide contraction, the properties of 4d-series of the transition elements have no similarities with 5d series of elements. B) There is a decrease in the radii of the atoms or ions as one proceeds from La to Lu. C) Lanthanoid contraction is the accumulation of successive shrinkages. D) Lanthanoid contraction is due effective shielding power of 4f electrons. Show Answer Correct Answer: D) Lanthanoid contraction is due effective shielding power of 4f electrons. 28. Inner transition elements are A) D block elements. B) F block elements. C) S block elements. D) P block elements. Show Answer Correct Answer: B) F block elements. 29. Which element among the lanthanoids has the smallest atomic radius? A) Ce. B) Lu. C) Eu. D) Gd. Show Answer Correct Answer: B) Lu. 30. What is the name of alloy formed by inner transition elements A) Alnico. B) Mischmetal. C) Brass. D) Bronze. Show Answer Correct Answer: B) Mischmetal. 31. What colour is a compound that contains Fe$^{3+}$? A) Red solid. B) Brown solid. C) Blue solid. D) Green solid. Show Answer Correct Answer: B) Brown solid. 32. The lanthanoid contraction is responsible for the fact that A) Zr and Y have about the same radii. B) Zr and Nb have similar oxidation state. C) Zr and Hf have about the same radii. D) Zr and Zn have the same oxidation state. Show Answer Correct Answer: C) Zr and Hf have about the same radii. 33. Most of the transition metal ions in solution as well as in solid states are coloured. A) Due to the presence of unpaired electrons. B) Due to the presence of paired electrons. C) All the above. D) None of the above. Show Answer Correct Answer: A) Due to the presence of unpaired electrons. 34. Transition elements show variableoxidation state due to A) Small size. B) Unpaired electron. C) Incomplete d orbital. D) None of these. Show Answer Correct Answer: C) Incomplete d orbital. 35. The general electronic configuration [Rn]5f$^{1-14}$ 6d$^{0-1}$ 7s$^{2}$ is of-: A) Lanthanoids. B) D-block elements. C) S-block elements. D) Actinoids. Show Answer Correct Answer: D) Actinoids. 36. What is the common oxidation state of lanthanoids? A) +2. B) +4. C) +5. D) +3. Show Answer Correct Answer: D) +3. 37. The transition elements are those elements which have ..... in their ground state or in any one oftheir oxidation states. A) Completely filled (partly filled) d-subshell. B) Incompletely filled (partly filled) d-subshell. C) Empty d subshell. D) None of these. Show Answer Correct Answer: B) Incompletely filled (partly filled) d-subshell. 38. What is the coordination number of the complex [Ni(CO)4]? A) 8. B) 6. C) 2. D) 4. Show Answer Correct Answer: D) 4. 39. Explain the significance of the d-orbitals in transition metals. A) D-orbitals are only involved in ionic bonding. B) D-orbitals have no effect on the color of transition metals. C) D-orbitals are irrelevant in determining oxidation states. D) The d-orbitals are significant in transition metals for variable oxidation states, magnetic properties, color, and bonding in coordination complexes. Show Answer Correct Answer: D) The d-orbitals are significant in transition metals for variable oxidation states, magnetic properties, color, and bonding in coordination complexes. 40. Transition elements forminterstitial compounds because size of C, N, O, and B is ..... to size of interstitial voids of transitionmetal A) Similar. B) Bigger. C) Smaller. D) None of the above. Show Answer Correct Answer: A) Similar. 41. Which of the following is a property of interstitial compounds? A) Low melting points. B) Low density. C) High hardness. D) High volatility. Show Answer Correct Answer: C) High hardness. 42. List three common properties of transition metals. A) Always form colorless compounds. B) Poor conductors of heat and electricity. C) Only one oxidation state. D) 1) Multiple oxidation states, 2) Good conductors of heat and electricity, 3) Formation of colored compounds. Show Answer Correct Answer: D) 1) Multiple oxidation states, 2) Good conductors of heat and electricity, 3) Formation of colored compounds. 43. Which of the following elements is not a transition metal? A) Iron. B) Barium. C) Copper. D) Zinc. Show Answer Correct Answer: B) Barium. 44. What is the primary reason for the high melting points of transition metals? A) Weak metallic bonds. B) Strong covalent bonds. C) Strong metallic bonds. D) Ionic bonds. Show Answer Correct Answer: C) Strong metallic bonds. 45. First transition series is also known as A) 3 d series. B) 4 d series. C) 5 d series. D) None of these. Show Answer Correct Answer: A) 3 d series. 46. WHICH OF THE FOLLOWING OXIDation state is most common for all the lanthanoids A) 3. B) 5. C) 4. D) 2. Show Answer Correct Answer: A) 3. 47. What is the oxidation state of iron in [Fe(CN)6]4-? A) +3. B) +1. C) 0. D) +2. Show Answer Correct Answer: D) +2. 48. Among the following transition element pick out the element with the highest second ionization energy V, Cr, Mn, Cu A) I and iii. B) Iv. C) Ii and iv. D) Iii. Show Answer Correct Answer: B) Iv. 49. What is the IUPAC name for the complex [Cr(H2O)6]3+? A) Hexaaquachromium(III). B) Dihydroxochromium(II). C) Hexachlorochromium(III). D) Pentaaquachromium(II). Show Answer Correct Answer: A) Hexaaquachromium(III). 50. How do you determine the overall charge of a complex ion? A) The charge is determined by the number of ligands only. B) The charge is calculated by subtracting the number of ligands from the metal ion charge. C) The overall charge of a complex ion is the sum of the charges of the central metal ion and its ligands. D) The overall charge is always zero regardless of the metal ion. Show Answer Correct Answer: C) The overall charge of a complex ion is the sum of the charges of the central metal ion and its ligands. 51. ELECTRINIC CONFIGURATION OF ELEMENT X IN +3 OXIDATION STATE IS [Ar] 3d5 . WHAT IS THE ATOMIC NUMBER? A) 27. B) 25. C) 26. D) 24. Show Answer Correct Answer: C) 26. 52. Which transition metal exhibits the maximum oxidation state? A) Iron. B) Copper. C) Chromium. D) Manganese. Show Answer Correct Answer: D) Manganese. 53. Which of the following metals show +3 oxidation state A) Gd. B) Ni. C) Ce. D) Pt. Show Answer Correct Answer: A) Gd. 54. How do you name the complex ion [CoCl2(NH3)4]+? A) Pentaammine dichlorocobalt(I). B) Tetraammine dichlorocobalt(II). C) Dichloro tetraammine cobalt(III). D) Tetraammine dichlorocobalt(I). Show Answer Correct Answer: D) Tetraammine dichlorocobalt(I). 55. Out of Mn$_{2}$O$_{7}$ V$_{2}$O$_{3}$, V$_{2}$O$_{5}$, CrO, Cr$_{2}$O$_{3}$, the basic oxides are A) Mn$_{2}$O$_{7}$ V$_{2}$O$_{3}$. B) V$_{2}$O$_{3}$, V$_{2}$O$_{5}$. C) V$_{2}$O$_{5}$, CrO. D) V$_{2}$O$_{3}$ and CrO. Show Answer Correct Answer: D) V$_{2}$O$_{3}$ and CrO. 56. What are the common properties of transition metals? A) Formation of ionic bonds. B) Common properties of transition metals include variable oxidation states, formation of colored compounds, ability to form complex ions, and catalytic activity. C) High melting points. D) Exist only in solid state. Show Answer Correct Answer: B) Common properties of transition metals include variable oxidation states, formation of colored compounds, ability to form complex ions, and catalytic activity. 57. Which of the following elements belong to actinoid-: A) Lanthanum. B) Lutetium. C) Thorium. D) Cerium. Show Answer Correct Answer: C) Thorium. 58. What is the electronic configuration of d-block elements? A) (n-1)d0-10ns1-2. B) (n-1)d1-10ns2-2. C) (n-1)d1-10ns1-2. D) (n-1)d1-10ns0-2. Show Answer Correct Answer: C) (n-1)d1-10ns1-2. 59. Which of the following characterisitic of transition metals is associated with their catalytic property A) Colour. B) Paramagnetic nature. C) High enthalpy of atomisation. D) Variable oxidation state. Show Answer Correct Answer: D) Variable oxidation state. 60. What is the coordination number?[Fe(H2O)6 ]Cl2 A) 2. B) 6. C) 4. D) 1. Show Answer Correct Answer: B) 6. Next →Related QuizzesScience QuizzesClass 12 QuizzesClass 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 2Class 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 3Class 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