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 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Chemistry (Part Ii) Chapter 8 D And F Block Elements Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following transition elements is used as a catalyst in Haber's process? A) Ti. B) V. C) Fe. D) Ni. Show Answer Correct Answer: C) Fe. 2. An atom with atomic number 21 belongs to category of-: A) P-block elements. B) S-block elements. C) D-block elements. D) F-block elements. Show Answer Correct Answer: C) D-block elements. 3. Electronic configuration of d-block element is A) (n-1) d $^{1-10}$ ns $^{1-2}$. B) (n-1) d $^{1-6}$ ns $^{1-2}$. C) N d $^{1-10}$ ns $^{1}$. D) (n-2) d $^{1-10}$ ns $^{1-2}$. Show Answer Correct Answer: A) (n-1) d $^{1-10}$ ns $^{1-2}$. 4. Which of the following is a characteristic of transition metals? A) Low density. B) Good conductors of heat. C) High volatility. D) Low melting points. Show Answer Correct Answer: B) Good conductors of heat. 5. Explain the electron configuration of a typical transition metal. A) Transition metals only have s orbitals filled. B) Transition metals have completely filled d orbitals. C) Transition metals have partially filled d orbitals, with configurations like [Ar] 4s2 3d6 for iron. D) Transition metals have no d orbitals in their configuration. Show Answer Correct Answer: C) Transition metals have partially filled d orbitals, with configurations like [Ar] 4s2 3d6 for iron. 6. The acidic, basic and amphoteric nature of Mn$_{2}$O$_{7}$, V$_{2}$O$_{5}$ and CrO are respectively A) Acidic, acidic and basic. B) Basic, amphoteric and acidic. C) Acidic, amphoteric and basic. D) Acidci, basic and amphoteric. Show Answer Correct Answer: C) Acidic, amphoteric and basic. 7. Which transition metal is known for its high melting point? A) Nickel. B) Iron. C) Tungsten. D) Copper. Show Answer Correct Answer: C) Tungsten. 8. What is the general electronic configuration of actinoids? A) (n-2)f1-14(n-1)d0-1ns2. B) (n-2)f0-14(n-1)d1-2ns2. C) (n-2)f1-14(n-1)d1-2ns1. D) (n-2)f0-14(n-1)d0-1ns2. Show Answer Correct Answer: A) (n-2)f1-14(n-1)d0-1ns2. 9. The magnetic moment is determined by the number of unpaired electrons and is calculated byusing the 'spin-only' formula, A) $\sqrt{n\left(n+2\right)}$. B) $\sqrt{n\left(n+1\right)}$. C) All the above. D) None of the above. Show Answer Correct Answer: A) $\sqrt{n\left(n+2\right)}$. 10. Transition elements act as catalyst due to A) Variable oxidation state. B) Single oxidation state. C) Both 1 and 2. D) None of the above. Show Answer Correct Answer: A) Variable oxidation state. 11. Which of the following statements explains why platinum, palladium, and rhodium are used in converters in car exhausts? A) Transition metals make good catalysts. B) Transition metals react slowly or not at all with acid. C) Transition metals have high melting points. D) Transition metals form colored compounds. Show Answer Correct Answer: A) Transition metals make good catalysts. 12. Transistion elements form alloys easily because they have A) Same atomic number. B) Same electronic configuration. C) Nearly same atomic size. D) None of the above. Show Answer Correct Answer: C) Nearly same atomic size. 13. In transition series with the increase in atomic no. paramagnetism A) Increases gradually. B) Decreases gradually. C) Increases to amaximum and then decreases. D) Decreases to a minimum then increases. Show Answer Correct Answer: C) Increases to amaximum and then decreases. 14. The number of unpaired d electrons retained in Fe$^{+2}$ (Z= 26) ion is-: A) 6. B) 3. C) 4. D) 5. Show Answer Correct Answer: C) 4. 15. How do actinides differ in reactivity compared to lanthanides? A) Actinides have similar reactivity to lanthanides. B) Actinides are more reactive than lanthanides. C) Actinides are less reactive than lanthanides. D) Actinides are non-reactive compared to lanthanides. Show Answer Correct Answer: B) Actinides are more reactive than lanthanides. 16. Which of the following compounds is expected to be coloured? A) ZnCl$_{2}$. B) CuCl. C) CuSO$_{4}$. D) AgNO$_{3}$. Show Answer Correct Answer: C) CuSO$_{4}$. 17. What is the role of ligands in coordination chemistry? A) Ligands act as electron pair acceptors from central metal atoms. B) Ligands serve as electron pair donors to central metal atoms in coordination chemistry. C) Ligands are responsible for the oxidation of central metal atoms. D) Ligands increase the temperature of coordination complexes. Show Answer Correct Answer: B) Ligands serve as electron pair donors to central metal atoms in coordination chemistry. 18. What is the primary reason for the high ionization enthalpies of lanthanoids? A) High atomic mass. B) Stable electronic configuration. C) Low shielding effect. D) High electronegativity. Show Answer Correct Answer: C) Low shielding effect. 19. Reason for lanthanoid contraction is A) Decrease in nuclear charge. B) Very poor shielding effect of f orbital. C) Increase in shielding effect. D) Increase in nuclear charge. Show Answer Correct Answer: B) Very poor shielding effect of f orbital. 20. The radius of La3= is 1.06 A . Which of the following is closest to Lu3+ A) 1.06. B) 0.85. C) 1.60. D) 1.4. Show Answer Correct Answer: B) 0.85. 21. Which of the following period 4 oxides is used as either a physical or a chemical sunscreens in many types of commercial sunblock? A) MnO2. B) VO25. C) TiO2. D) CuO. Show Answer Correct Answer: C) TiO2. 22. Which of the following are d-block elements but not regarded as transition elements? A) Ru, Rh, Pd. B) Cu, Ag, Au. C) Zn, Cd, Hg. D) Fe, Co, Ni. Show Answer Correct Answer: C) Zn, Cd, Hg. 23. What is the common oxidation state of transition metals? A) +6 and +7. B) +1 and +4. C) -1 and +5. D) +2 and +3. Show Answer Correct Answer: D) +2 and +3. 24. Which of the following statements about actinoids is true? A) They are all non-radioactive. B) They exhibit a wide range of oxidation states. C) They are all gases at room temperature. D) They have a common oxidation state of +2. Show Answer Correct Answer: B) They exhibit a wide range of oxidation states. 25. The highest occupied s sublevel and a nearby f sublevel contain electrons. A) Noble gases. B) Group A. C) Transition metals. D) Inner transition metals. Show Answer Correct Answer: D) Inner transition metals. 26. Which of the following elements is known for its ability to form colored ions? A) Cadmium. B) Zinc. C) Copper. D) Mercury. Show Answer Correct Answer: C) Copper. 27. What is the primary reason for the formation of alloys by transition metals? A) High volatility. B) Different oxidation states. C) Similar atomic sizes. D) Low melting points. Show Answer Correct Answer: C) Similar atomic sizes. 28. How do lanthanides differ from actinides in terms of electronic configuration? A) Lanthanides have no f subshell; actinides fill the 6f subshell. B) Lanthanides fill the 5f subshell; actinides fill the 4f subshell. C) Both lanthanides and actinides fill the 4f subshell. D) Lanthanides fill the 4f subshell; actinides fill the 5f subshell. Show Answer Correct Answer: D) Lanthanides fill the 4f subshell; actinides fill the 5f subshell. 29. From Element to element Actinoid contraction is more than Lanthanoid contraction. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 30. What are transition metals and where are they located in the periodic table? A) Transition metals are found in groups 1 and 2. B) Transition metals are located in groups 3 to 12 of the periodic table. C) Transition metals are located in the lanthanide series. D) Transition metals are only found in the f-block of the periodic table. Show Answer Correct Answer: B) Transition metals are located in groups 3 to 12 of the periodic table. 31. Which of the following ions is colored due to d-d transitions? A) Zn2+. B) Hg2+. C) Cu2+. D) Cd2+. Show Answer Correct Answer: C) Cu2+. 32. Which is a chemical property of metals A) Corrosion. B) Magnetism. C) Thermal conductivity. D) Electrical Conductivity. Show Answer Correct Answer: A) Corrosion. 33. What type of bonding do transition metals exhibit? A) Ionic bonding. B) Covalent bonding. C) Metallic bonding. D) Hydrogen bonding. Show Answer Correct Answer: C) Metallic bonding. 34. What is the IUPAC name for the complex [Ag(NH3)2]+? A) Ammonia silver(II). B) Silver diammine. C) Diammine silver(I). D) Diamine silver(III). Show Answer Correct Answer: C) Diammine silver(I). 35. What is the primary use of potassium permanganate? A) As an oxidizing agent. B) As a reducing agent. C) As a bleaching agent. D) As a catalyst. Show Answer Correct Answer: A) As an oxidizing agent. 36. How do lanthanides contribute to the production of strong magnets? A) Lanthanides do not play a role in magnet production. B) Lanthanides are used in aluminum magnets. C) Lanthanides are primarily used in superconductors. D) Lanthanides contribute to strong magnets by being key components in neodymium-iron-boron (NdFeB) magnets. Show Answer Correct Answer: D) Lanthanides contribute to strong magnets by being key components in neodymium-iron-boron (NdFeB) magnets. 37. Which of the following is a characteristic of lanthanoids? A) They are non-conductors. B) They are all gases. C) They have low melting points. D) They are silvery white metals. Show Answer Correct Answer: D) They are silvery white metals. 38. Both silver and cadmium have d$^{10}$ electronic configuration in ground state, although silver is transition element but cadmium is not considered as transition element because A) Silver is transition element but cadmium is not. B) Cadmium is transition element but Silver is not. C) Both silver and cadmium are considered as transition elements. D) Both silver and cadmium are not considered as transition elements. Show Answer Correct Answer: A) Silver is transition element but cadmium is not. 39. Transition elements show variable oxidation state due to A) Small energy gap between (n-1)d and ns orbitals. B) Large energy gap between (n-1)d and ns orbitals. C) Both 1and 2. D) None of the above. Show Answer Correct Answer: A) Small energy gap between (n-1)d and ns orbitals. 40. Name a transition metal that is commonly used as a catalyst. A) Zinc. B) Iron. C) Copper. D) Platinum. Show Answer Correct Answer: D) Platinum. 41. In a chemistry class, Alisha is learning about transition metals and their importance in various industries. She is tasked with listing two industrial applications of transition metals. A) Used in electrical wiring. B) Components in solar panels. C) Ingredients in pharmaceuticals. D) Catalysts in chemical reactions and manufacturing of alloys. Show Answer Correct Answer: D) Catalysts in chemical reactions and manufacturing of alloys. 42. Which of the following is not a common property of the transition metals? A) They are good catalysts. B) They form multiple stable ions. C) They form colorful ions. D) They are easily vaporized. Show Answer Correct Answer: D) They are easily vaporized. 43. Ion size of lanthanide is ..... A) Decrease from Lu-La. B) Decrease from La-Lu. C) Increase from Ac-Th. D) Increase from La-Lu. Show Answer Correct Answer: B) Decrease from La-Lu. 44. What factors influence the oxidation states of transition metals? A) Electron configuration, ligand nature, oxidation state, stability of complexes. B) Color, size, shape. C) Molecular weight, pH, solubility. D) Atomic radius, temperature, pressure. Show Answer Correct Answer: A) Electron configuration, ligand nature, oxidation state, stability of complexes. 45. Aanya is conducting an experiment in her chemistry lab to explore the effectiveness of different transition metals as catalysts. She needs to identify which of the following metals are commonly used in catalytic processes. A) Zinc. B) Copper. C) Iron, Nickel, Palladium. D) Aluminum. Show Answer Correct Answer: C) Iron, Nickel, Palladium. 46. Which of the following is a correct term lanthanide elements can also be referred to as? A) Halogen. B) Rare-earth metals. C) Alkaline earth metal. D) Nonmetal. Show Answer Correct Answer: B) Rare-earth metals. 47. Although +3 is the characteristics oxidation state for lanthanoids yet cerium also shows +4 oxidation state A) It has variable ionisation enthalpy. B) It has a tendency to attain noble gas configuration. C) It has a tendency to reduce Ce$^{4+ }$to Ce$^{3+}$. D) It resembles Pb$^{ 4+}$. Show Answer Correct Answer: B) It has a tendency to attain noble gas configuration. 48. Which of the following is not an element of first transition series? A) Ni. B) Fe. C) Cr. D) Mg. Show Answer Correct Answer: D) Mg. 49. What is the effect of lanthanoid contraction? A) Decrease in atomic size. B) Increase in atomic size. C) Increase in ionization energy. D) No effect on atomic size. Show Answer Correct Answer: A) Decrease in atomic size. 50. Which of the following statement is incorrect regarding Zinc metal A) It have fully field d orbital. B) Zinc have high enthalpy of atomization. C) Most of its compound are white in colour. D) It is di-magnetic . Show Answer Correct Answer: B) Zinc have high enthalpy of atomization. 51. The property which is not characteristic of transistion metals is A) Variable oxidation states. B) Natural radioactivity. C) Tendency to form complexes. D) Formation of coloured compounds. Show Answer Correct Answer: B) Natural radioactivity. 52. A fe 2+ acts as a reducing agent R:Fe3+ has stable d5 configuration A) A true R true and correct reason. B) A true and r true incorrect reason. C) A false R true. D) A false r false. Show Answer Correct Answer: A) A true R true and correct reason. 53. What is the primary reason for the paramagnetic behavior of transition metals? A) Presence of paired electrons. B) Presence of unpaired electrons. C) Low ionization energy. D) High atomic mass. Show Answer Correct Answer: B) Presence of unpaired electrons. 54. Generally transition elements form coloured salts due to the presence of unpaired electrons. Which of the following compounds will be coloured in solid state? A) Ag$_{2}$SO$_{4}$. B) CuF$_{2}$. C) Cu$_{2}$Cl$_{2}$. D) ZnCl$_{2}$. Show Answer Correct Answer: B) CuF$_{2}$. 55. THE ELECTRONIC CONFIGURATION OF Cu(II) IS 3d9 AND Cu (I) IS 3d10 . wHICH OF THE FOLLOWING IS CORRECT? A) CU(II) IS MORE STABLE. B) CU (II) IS LESS STABLE. C) CU (II0 AND CU (I) HAVE EQUAL STABILITY. D) STABILITY OF CU SALT DEPENDS ON THE NATURE OF CU SALT. Show Answer Correct Answer: A) CU(II) IS MORE STABLE. 56. One metal that is liquid at room temperature is A) Sodium. B) Magnesium. C) Mercury. D) Manganese. Show Answer Correct Answer: C) Mercury. 57. Which of the following ion is is colourless A) Ni2+. B) Co2+. C) Cu+. D) Fe3+. Show Answer Correct Answer: C) Cu+. 58. A:each transition series consist of 10 elements r:maximum capacity of d subshell is 10 A) A true R true and correct reason. B) A true R true and incorrect reason. C) A false R true. D) A false R false. Show Answer Correct Answer: A) A true R true and correct reason. 59. Which of the following are d-block elements but not regarded as transistion elements? A) Cu, Ag, Au. B) Fe, Co, Ni. C) Zn, Cd, Hg. D) Ru, Rh, Pd. Show Answer Correct Answer: C) Zn, Cd, Hg. 60. Why does transition metal form alloys with other transition metals? A) Due to similar ionic size. B) Due to incomplete d orbital. C) Variable oxidation state. D) None. Show Answer Correct Answer: A) Due to similar ionic size. ← PreviousNext →Related 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 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