Jump to a section

Chemistry - d and f Block Elements

Practise 32 WBJEE previous year questions on d and f Block Elements, compiled from papers spanning 2009 to 2025. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty WBJEE tests.

d and f Block Elements has been asked in 15 of the 18 years of WBJEE papers analysed (2009–2026), with 32 questions in all. 56% of them were easy, 28% moderate and 16% tough. Most of its questions came from 2024, with 4 questions that year. In the last three years (2024–2026) it had 6 questions across 3 papers, about 2 per paper.

The chapter's 3 topics are not weighted equally: Compounds of Transition Metals (13 questions, 41%), Properties of D-block elements (12 questions, 38%), and F-Block elements (7 questions, 22%) have been asked the most. Compounds of Transition Metals has also led over the last five years, with 4 questions. Compounds of Transition Metals has produced the most tough questions (3).

  1. 1The common stable oxidation states of Eu and Gd are respectively2025F-Block elements
  2. 2Which pair of ions among the following can be separated by precipitation method?2025F-Block elements
  3. 3What will be the change in acidity if (i) is added in saturated solution (ii) is added in anhydrous HF2024Properties of D-block elements
  4. 4Number of moles of ions produced by complete dissociation of one mole of Mohr's salt in water is2024Compounds of Transition Metals
  5. 5Which of the following species exhibits both LMCT and paramagnetism?2024Compounds of Transition Metals
  6. 6Which of the following statement/statements is/are correct?2024Compounds of Transition Metals
  7. 7\(4 f^2\) electronic configuration is found in2023F-Block elements
  8. 8The number of unpaired electron in ion is2022Properties of D-block elements
  9. 9Sodium nitroprusside is2022Properties of D-block elements
  10. 10The metal-pair that can produce nascent hydrogen in alkaline medium is2022Properties of D-block elements
  11. 11Oxidation states of in and are, respectively2022Compounds of Transition Metals
  12. 12A given amount of is oxidized by mol of in acidic medium. The number of moles of required to oxidize the same amount of in acidic medium is2021Compounds of Transition Metals
  13. 13The reaction for obtaining the metal (M) from its oxide ore is given by solid, liquid in that case, is2020Properties of D-block elements
  14. 14The second ionisation energy of the following elements follows the order2019F-Block elements
  15. 15The melting points of (i) BeCl (ii) and (iii) follows the order2019Properties of D-block elements
  16. 16Which atomic species cannot be used as a nuclear fuel?2019F-Block elements
  17. 17A copper coin was electroplated with and then heated at high temperature until there is a change in colour. What will be the resulting colou2019Properties of D-block elements
  18. 18The correct basicity order of the following lanthanide ions is2017F-Block elements
  19. 19Which of the following statements regarding Lanthanides is false?2016F-Block elements
  20. 20The metal which can be used to obtain metallic Cu from aqueous CuSO solution is2016Properties of D-block elements
  21. 21Which of the following statement(s) is (are) correct when a mixture of and is gently warmed with conc.2016Compounds of Transition Metals
  22. 22The electronic configuration of is2014Properties of D-block elements
  23. 23Cupric compounds are more stable than their cuprous counterparts in solid state. This is because2014Properties of D-block elements
  24. 24Baeyer's reagent is2013Compounds of Transition Metals
  25. 25The orange solid on heating gives a colourless gas and a green solid which can be reduced to metal by aluminium powder. The orange and the g2013Compounds of Transition Metals
  26. 26The equivalent weight of in acidic medium is expressed in terms of its molecular weight (M) as2012Compounds of Transition Metals
  27. 27When is shaken with an acidified solution of in the presence of ether, the cthereal layer turns blue due to the formation of2012Compounds of Transition Metals
  28. 28Platinum, Palladium and Iridium are called noble metals because2011Properties of D-block elements
  29. 29Anhydrous ferric chloride is prepared by2011Compounds of Transition Metals
  30. 30When a manganous salt is fused with a mixture of and solid the oxidation number of Mn changes from +2 to2010Compounds of Transition Metals
  31. 31The oxidant which is used as an antiseptic is :2009Compounds of Transition Metals
  32. 32"Electron" is an alloy of2009Properties of D-block elements

Frequently Asked Questions

1.How many questions are available for d and f Block Elements?

This chapter includes 32 questions compiled from WBJEE papers spanning 2009 to 2025.

2.Are these questions only from WBJEE, or from other exams too?

These are WBJEE questions specifically for the d and f Block Elements chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is d and f Block Elements an important chapter for WBJEE Chemistry?

d and f Block Elements has appeared in 15 of the 18 years of WBJEE papers covered here, with 32 questions across 15 papers - about 2 per paper it appears in.

4.What is the difficulty level of d and f Block Elements questions in WBJEE?

Of the 32 questions analysed for this chapter, 56% are easy, 28% moderate and 16% tough. 2024 had the most, with 4 questions.

5.Which topics in d and f Block Elements should I focus on?

These topics have carried the most weightage in d and f Block Elements:

  • Compounds of Transition Metals - 13 questions (41%)
  • Properties of D-block elements - 12 questions (38%)
  • F-Block elements - 7 questions (22%)
  • Compounds of Transition Metals has produced the most tough questions (3).
6.Is d and f Block Elements's weightage in WBJEE going up or down?

Across all 15 papers analysed, d and f Block Elements has averaged about 2.1 questions per paper. In the last three years (2024–2026), that average has stayed about the same, at about 2.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.