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Friday, 9 October

JEE Main Chemistry · Class 12

The d- and f-Block Elements: JEE Main previous year questions

The d- and f-Block Elements had 61 questions in the 42 JEE Main shifts Lumi analysed, about 1.2 a shift, asked in 36 of 42 shifts. It ranks 4 of 30 Chemistry chapters by questions; 5% of its questions were hard.

Questions
61
in 36 of 42 shifts
A shift, on average
1.2
of 25 Chemistry questions
Since 2024
+0.6
0.9 a shift in 2017–23, 1.6 in 2024–26
Numerical answer
15
25% of its questions

Year by year

How often it came

Questions in the analysed shifts of each year. Years differ in how many shifts Lumi analysed, so read the bars with the shift count.

Questions each year
09181’174’206’216’222’2318’2411’2513’26

2017: 1 shifts · 2020: 4 shifts · 2021: 4 shifts · 2022: 4 shifts · 2023: 4 shifts · 2024: 8 shifts · 2025: 8 shifts · 2026: 9 shifts

Difficulty by year
  • 20171
  • 20204
  • 20216
  • 20226
  • 20232
  • 202418
  • 202511
  • 202613
  • Easy
  • Medium
  • Hard

Inside the chapter

Topics and the ideas that repeat

6 topics and 34 distinct ideas; 14 ideas were asked more than once. Most questions are single correct and recall.

Topics, by questions

2 questions had no close topic in our taxonomy and are counted for the chapter only.

Ideas asked most
14 repeat

Study it on Lumi

The d- and f-Block Elements: the interactive lesson

Every question

All 61 The d- and f-Block Elements questions

Newest first. Each opens with its options and the official answer.

2026 13 questions

  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 · Q70Among Fe2+^{2+}, Fe3+^{3+}, Cr2+^{2+} and Zn2+^{2+}, the ion that shows positive borax bead test and with highest ionisation enthalpy is:MediumSingle correct
  3. 2 Apr 2026, Shift 2 · Q74Number of paramagnetic ions among the following d- and f-block metal ions is __________.…MediumNumerical value
  4. 4 Apr 2026, Shift 1 · Q60The correct statements among the following are, A. Mo(VI) and W(VI) are less stable than Cr(VI). B. Ce4+\mathrm{Ce^{4+}} and…HardOther
  5. 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
  6. 4 Apr 2026, Shift 2 · Q59Pairs of elements with the same number of electrons in their respective 4f orbital are [Atomic number: Eu-63, Gd-64, Dy-66, Ho-67, Tm-69,…MediumOther
  7. 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
  8. 5 Apr 2026, Shift 1 · Q60Which of the following is NOT a physical or chemical characteristics of interstitial compounds?EasySingle correct
  9. 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
  10. 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
  11. 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
  12. 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
  13. 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

2025 11 questions

  1. 2 Apr 2025, Shift 1 · Q62Choose the correct tests with respective observations. (A) CuSO4\mathrm{CuSO_4} (acidified with acetic acid) +…MediumOther
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 4 Apr 2025, Shift 2 · Q61The incorrect relationship in the following pairs in relation to ionisation enthalpies is :MediumSingle correct
  8. 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
  9. 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
  10. 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
  11. 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

2024 18 questions

  1. 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
  2. 8 Apr 2024, Shift 1 · Q72Match List I with List II LIST I (Name of the test): A. Borax bead test; B. Charcoal cavity test; C. Cobalt nitrate test; D. Flame test…MediumMatch the list
  3. 8 Apr 2024, Shift 1 · Q73Match List I with List II LIST I (Compound): A. Fe4[Fe(CN)6]3⋅xH2O\mathrm{Fe_4[Fe(CN)_6]_3\cdot xH_2O}; B. [Fe(CN)5NOS]4−[\mathrm{Fe(CN)_5NOS}]^{4-}; C.…MediumMatch the list
  4. 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
  5. 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
  6. 9 Apr 2024, Shift 1 · Q87Number of colourless lanthanoid ions among the following is ________. Eu3+,Lu3+,Nd3+,La3+,Sm3+\mathrm{Eu^{3+}, Lu^{3+}, Nd^{3+}, La^{3+}, Sm^{3+}}MediumNumerical value
  7. 9 Apr 2024, Shift 2 · Q66The electronic configuration of Einsteinium is : (Given atomic number of Einsteinium = 99)MediumSingle correct
  8. 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
  9. 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
  10. 29 Jan 2024, Shift 1 · Q67KMnO4\mathrm{KMnO_4} decomposes on heating at 513K to form O2\mathrm{O_2} along withEasySingle correct
  11. 29 Jan 2024, Shift 1 · Q68In alkaline medium, MnO4−\mathrm{MnO_4^-} oxidises I−\mathrm{I^-} toMediumSingle correct
  12. 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
  13. 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
  14. 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
  15. 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
  16. 31 Jan 2024, Shift 1 · Q69The metals that are employed in the battery industries are A. Fe B. Mn C. Ni D. Cr E. Cd Choose the correct answer from the options given…EasyOther
  17. 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
  18. 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

2023 2 questions

  1. 6 Apr 2023, Shift 1 · Q70Strong reducing and oxidizing agents among the following, respectively, areMediumSingle correct
  2. 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

2022 6 questions

  1. 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
  2. 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
  3. 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
  4. 29 Jun 2022, Shift 1 · Q66The electronic configuration of Pt (atomic number 78) is :MediumSingle correct
  5. 29 Jun 2022, Shift 1 · Q86The number of terminal oxygen atoms present in the product B obtained from the following reaction is ____________.…MediumNumerical value
  6. 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

2021 6 questions

  1. 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
  2. 3 Aug 2021, Shift 2 · Q38Which one of the following set will give coloured aqueous solution?EasySingle correct
  3. 3 Aug 2021, Shift 2 · Q39Which one of the following statements is correct?MediumSingle correct
  4. 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
  5. 16 Mar 2021, Shift 2 · Q38Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three, high spin…MediumSingle correct
  6. 16 Mar 2021, Shift 2 · Q39FeX2\mathrm{FeX_2} and FeY3\mathrm{FeY_3} are known when xx and yy are :MediumSingle correct

2020 4 questions

  1. 8 Jan 2020, Shift 1 · Q36The third ionization enthalpy is minimum for :MediumSingle correct
  2. 9 Jan 2020, Shift 2 · Q335 g of zinc is treated separately with an excess of (a) dilute hydrochloric acid and (b) aqueous sodium hydroxide. The ratio of the…MediumSingle correct
  3. 9 Jan 2020, Shift 2 · Q49The sum of the total number of bonds between chromium and oxygen atoms in chromate and dichromate ions is ______.MediumNumerical value
  4. 6 Sep 2020, Shift 2 · Q38Mischmetal is an alloy consisting mainly of :EasySingle correct

2017 1 questions

  1. 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

Pattern: Asked most years.