Chemistry - d and f Block Elements
Practise 4 IAT (IISER) previous year questions on d and f Block Elements, compiled from papers spanning 2018 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 IAT (IISER) tests.
d and f Block Elements has been asked in 1 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 4 questions in all. 75% of them were easy, 25% moderate and 0% tough. Most of its questions came from 2018, with 3 questions that year. In the last three years (2023–2026) it had 0 questions across 3 papers, about 0 per paper.
The chapter's 2 topics are not weighted equally: Properties of D-block elements (3 questions, 75%) and F-Block elements (1 question, 25%) have been asked the most. Properties of D-block elements has also led over the last five years, with 1 question.
- 1What are the correct orders of stability for the following compounds?2025Properties of D-block elements
- 2The melting point of \( {Mn}_4 {~N}\) is2018Properties of D-block elements
- 3Which of the following statements is correct about tetrahedral manganate and permanganate ions?2018Properties of D-block elements
- 4Among the lanthanides \( {Eu}, {Tb}, {Er}\) and Dy , which one readily forms stable divalent ions?2018F-Block elements
Frequently Asked Questions
1.How many questions are available for d and f Block Elements?
This chapter includes 4 questions compiled from IAT (IISER) papers spanning 2018 to 2025.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) 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 IAT (IISER) Chemistry?
d and f Block Elements has appeared in 2 of the 10 years of IAT (IISER) papers covered here, with 4 questions across 2 papers - about 2 per paper it appears in.
4.What is the difficulty level of d and f Block Elements questions in IAT (IISER)?
Of the 4 questions analysed for this chapter, 75% are easy, 25% moderate and 0% tough. 2018 had the most, with 3 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:
- Properties of D-block elements - 3 questions (75%)
- F-Block elements - 1 question (25%)
6.Is d and f Block Elements's weightage in IAT (IISER) going up or down?
Across all 2 papers analysed, d and f Block Elements has averaged about 2.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.