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Friday, 9 October

JEE Main Chemistry · The d- and f-Block Elements

d-Block Elements in JEE Main

d-Block Elements (Chemistry, The d- and f-Block Elements) came 51 times in 33 of the 42 JEE Main shifts Lumi analysed, across 25 distinct ideas. 37 of them came in 2024–26; it was last asked in 2026.

Questions
51
in 33 shifts
Ideas asked
25
13 asked more than once
Numerical answer
13
25% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
08161’171’205’216’221’2316’2411’2510’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 14Medium 35Hard 2

Format

  • Single correct21 Q
  • Numerical value13 Q
  • Other9 Q
  • Two statements6 Q
  • Match the list2 Q
Ideas inside the topic
25 ideas
Where it sits

Part of The d- and f-Block Elements, which had 61 questions in all. d-Block Elements accounts for 84% of them. In Lumi's JEE taxonomy it belongs to Inorganic Chemistry.

Some questions sit in other chapters too: Chemical Kinetics, Coordination Compounds, Surface Chemistry.

Every question

All 51 d-Block Elements questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 2 · Q60Given below are two statements: Statement I: Among Zn, Mn, Sc and Cu, the energy required to remove the third valence electron is highest…MediumSingle correct
  2. 2 Apr 2026, Shift 2 · Q74Number of paramagnetic ions among the following d- and f-block metal ions is __________.…MediumNumerical value
  3. 4 Apr 2026, Shift 1 · Q61Correct statements from the following are A. Potassium dichromate is an oxidising agent and it oxidises FeSO4\mathrm{FeSO_4} to…MediumOther
  4. 4 Apr 2026, Shift 2 · Q62Consider ∣x∣|x| is the difference in oxidation states of Mn in highest manganese fluoride and highest manganese oxide. The ions with ∣x∣|x|…MediumOther
  5. 5 Apr 2026, Shift 1 · Q60Which of the following is NOT a physical or chemical characteristics of interstitial compounds?EasySingle correct
  6. 5 Apr 2026, Shift 2 · Q60Given below are two statements : Statement I : Presence of large number of unpaired electrons in transition metal atoms results in higher…MediumTwo statements
  7. 6 Apr 2026, Shift 1 · Q60The correct statements among the following are. A. Basic vanadium oxide is used in the manufacture of H2SO4\mathrm{H_2SO_4}. B. The spin-only…HardOther
  8. 6 Apr 2026, Shift 2 · Q60The correct order of first (ΔiH1\Delta_iH_1) and second (ΔiH2\Delta_iH_2) ionisation enthalpy values of Cr and Mn are : A. ΔiH1\Delta_iH_1 : Cr…MediumOther
  9. 8 Apr 2026, Shift 2 · Q60Given below are two statements : Statement I : The number of pairs among [Ti4+,V2+][\mathrm{Ti^{4+}, V^{2+}}], [V2+,Mn2+][\mathrm{V^{2+}, Mn^{2+}}],…MediumTwo statements
  10. 8 Apr 2026, Shift 2 · Q61Given below are two statements for catalytic properties of transition metals. Statement I : First row transition metals which act as…EasyTwo statements
  11. 2 Apr 2025, Shift 2 · Q74The spin-only magnetic moment value of Mn+\mathrm{M^{n+}} ion formed among Ni, Zn, Mn and Cu that has the least enthalpy of atomisation is…MediumNumerical value
  12. 3 Apr 2025, Shift 1 · Q62The metal ions that have the calculated spin-only magnetic moment value of 4.9 B.M. are : A. Cr2+\mathrm{Cr^{2+}} B. Fe2+\mathrm{Fe^{2+}} C.…EasyOther
  13. 3 Apr 2025, Shift 1 · Q73Consider the following reactions A+NaCl+H2SO4→CrO2Cl2+Side Products\mathrm{A + NaCl + H_2SO_4 \rightarrow CrO_2Cl_2 + Side\ Products} (A: little amount)…MediumNumerical value
  14. 3 Apr 2025, Shift 2 · Q61Given below are two statements: Statement I : CrO3\mathrm{CrO_3} is a stronger oxidizing agent than MoO3\mathrm{MoO_3} Statement II : Cr(VI)…MediumTwo statements
  15. 3 Apr 2025, Shift 2 · Q73Among, Sc, Mn, Co and Cu, identify the element with highest enthalpy of atomisation. The spin only magnetic moment value of that element…MediumNumerical value
  16. 4 Apr 2025, Shift 2 · Q59'X' is the number of electrons in t2g\mathrm{t_{2g}} orbitals of the most stable complex ion among [Fe(NH3)6]3+\mathrm{[Fe(NH_3)_6]^{3+}},…MediumSingle correct
  17. 4 Apr 2025, Shift 2 · Q61The incorrect relationship in the following pairs in relation to ionisation enthalpies is :MediumSingle correct
  18. 7 Apr 2025, Shift 1 · Q59The number of valence electrons present in the metal among Cr, Co, Fe and Ni which has the lowest enthalpy of atomisation isMediumSingle correct
  19. 7 Apr 2025, Shift 1 · Q61The first transition series metal 'M' has the highest enthalpy of atomisation in its series. One of its aquated ion (Mn+\mathrm{M^{n+}})…MediumSingle correct
  20. 7 Apr 2025, Shift 2 · Q61'X' is the number of acidic oxides among VO2\mathrm{VO_2}, V2O3\mathrm{V_2O_3}, CrO3\mathrm{CrO_3}, V2O5\mathrm{V_2O_5} and Mn2O7\mathrm{Mn_2O_7}.…MediumSingle correct
  21. 8 Apr 2025, Shift 2 · Q58The correct decreasing order of spin only magnetic moment values (BM) of Cu+\mathrm{Cu^+}, Cu2+\mathrm{Cu^{2+}}, Cr2+\mathrm{Cr^{2+}} and…EasySingle correct
  22. 6 Apr 2024, Shift 2 · Q86Among VO2+\mathrm{VO_2^+}, MnO4−\mathrm{MnO_4^-} and Cr2O72−\mathrm{Cr_2O_7^{2-}}, the spin-only magnetic moment value of the species with least…MediumNumerical value
  23. 8 Apr 2024, Shift 1 · Q69Iron (III) catalyses the reaction between iodide and persulphate ions, in which A. Fe3+\mathrm{Fe^{3+}} oxidises the iodide ion B.…MediumOther
  24. 8 Apr 2024, Shift 1 · Q86The 'spin only' magnetic moment value of MO42−\mathrm{MO_4^{2-}} is ____________ BM. (Where M is a metal having least metallic radii. among…MediumNumerical value
  25. 9 Apr 2024, Shift 1 · Q68The electronic configuration of Cu(II) is 3d93d^9 whereas that of Cu(I) is 3d103d^{10}. Which of the following is correct ?EasySingle correct
  26. 9 Apr 2024, Shift 2 · Q66The electronic configuration of Einsteinium is : (Given atomic number of Einsteinium = 99)MediumSingle correct
  27. 9 Apr 2024, Shift 2 · Q69Give below are two statements : Statement I : The higher oxidation states are more stable down the group among transition elements unlike…MediumTwo statements
  28. 9 Apr 2024, Shift 2 · Q86A transition metal 'M' among Sc, Ti, V, Cr, Mn and Fe has the highest second ionisation enthalpy. The spin-only magnetic moment value of…MediumNumerical value
  29. 29 Jan 2024, Shift 1 · Q67KMnO4\mathrm{KMnO_4} decomposes on heating at 513K to form O2\mathrm{O_2} along withEasySingle correct
  30. 29 Jan 2024, Shift 1 · Q68In alkaline medium, MnO4−\mathrm{MnO_4^-} oxidises I−\mathrm{I^-} toMediumSingle correct
  31. 29 Jan 2024, Shift 1 · Q70Match List I with List II LIST I (Substances) A. Ziegler catalyst B. Blood Pigment C. Wilkinson catalyst D. Vitamin B12\mathrm{B_{12}} LIST…EasyMatch the list
  32. 30 Jan 2024, Shift 2 · Q69Alkaline oxidative fusion of MnO2\mathrm{MnO_2} gives "A" which on electrolytic oxidation in alkaline solution produces B. A and B…EasySingle correct
  33. 30 Jan 2024, Shift 2 · Q70The orange colour of K2Cr2O7\mathrm{K_2Cr_2O_7} and purple colour of KMnO4\mathrm{KMnO_4} is due toEasySingle correct
  34. 30 Jan 2024, Shift 2 · Q80A and B formed in the following reactions are: CrO2Cl2+4NaOH→A+2NaCl+2H2O\mathrm{CrO_2Cl_2} + 4\mathrm{NaOH} \to A + 2\mathrm{NaCl} + 2\mathrm{H_2O}…MediumSingle correct
  35. 31 Jan 2024, Shift 1 · Q68Identify correct statements from below: A. The chromate ion is square planar. B. Dichromates are generally prepared from chromates. C. The…MediumOther
  36. 31 Jan 2024, Shift 2 · Q69Choose the correct statements from the following A. Mn2O7\mathrm{Mn_2O_7} is an oil at room temperature B. V2O4\mathrm{V_2O_4} reacts with acid…MediumOther
  37. 31 Jan 2024, Shift 2 · Q90In the reaction of potassium dichromate, potassium chloride and sulfuric acid (conc.), the oxidation state of the chromium in the product…EasyNumerical value
  38. 8 Apr 2023, Shift 2 · Q89The sum of oxidation state of the metals in Fe(CO)5\mathrm{Fe(CO)_5}, VO2+\mathrm{VO^{2+}} and WO3\mathrm{WO_3} is ____________.EasyNumerical value
  39. 25 Jul 2022, Shift 1 · Q68The reaction of H2O2\mathrm{H_2O_2} with potassium permanganate in acidic medium leads to the formation of mainly :EasySingle correct
  40. 25 Jul 2022, Shift 1 · Q87Among Co3+, Ti2+, V2+\mathrm{Co^{3+},\ Ti^{2+},\ V^{2+}} and Cr2+\mathrm{Cr^{2+}} ions, one if used as a reagent cannot liberate H2\mathrm{H_2} from…HardNumerical value
  41. 28 Jul 2022, Shift 1 · Q88The disproportionation of MnO42−\mathrm{MnO_4^{2-}} in acidic medium resulted in the formation of two manganese compounds A and B. If the…MediumNumerical value
  42. 29 Jun 2022, Shift 1 · Q66The electronic configuration of Pt (atomic number 78) is :MediumSingle correct
  43. 29 Jun 2022, Shift 1 · Q86The number of terminal oxygen atoms present in the product B obtained from the following reaction is ____________.…MediumNumerical value
  44. 29 Jun 2022, Shift 1 · Q87An acidified manganate solution undergoes disproportionation reaction. The spin-only magnetic moment value of the product having manganese…MediumNumerical value
  45. 3 Aug 2021, Shift 2 · Q31Given below are two statements : Statement I : In dichromate ion, all the Cr—O bonds are of equal length. Statement II : In dichromate…MediumTwo statements
  46. 3 Aug 2021, Shift 2 · Q38Which one of the following set will give coloured aqueous solution?EasySingle correct
  47. 25 Jul 2021, Shift 1 · Q38The correct order of following 3d metal oxides, according to their oxidation numbers is : (a) CrO3\mathrm{CrO_3} (b) Fe2O3\mathrm{Fe_2O_3} (c)…EasyOther
  48. 16 Mar 2021, Shift 2 · Q39FeX2\mathrm{FeX_2} and FeY3\mathrm{FeY_3} are known when xx and yy are :MediumSingle correct
  49. 18 Mar 2021, Shift 1 · Q33Match List - I with List - II : List - I (Process) (a) Deacon's process (b) Contact process (c) Cracking of hydrocarbons (d) Hydrogenation…MediumMatch the list
  50. 8 Jan 2020, Shift 1 · Q36The third ionization enthalpy is minimum for :MediumSingle correct
  51. 2 Apr 2017 (offline) · Q47In the following reactions, ZnO is respectively acting as a/an : (a) ZnO+Na2O→Na2ZnO2\mathrm{ZnO+Na_2O\rightarrow Na_2ZnO_2} (b)…MediumSingle correct