Chemistry - Classification of Elements and Periodicity in Properties
Practise 3 IAT (IISER) previous year questions on Classification of Elements and Periodicity in Properties, compiled from papers spanning 2020 to 2024. 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.
Classification of Elements and Periodicity in Properties has been asked in 3 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 3 questions in all. 33% of them were easy, 67% moderate and 0% tough. Most of its questions came from 2024, with 1 question that year. In the last three years (2023–2026) it had 1 question across 3 papers, about 0.3 per paper.
The chapter's 2 topics are not weighted equally: Periodic properties (2 questions, 67%) and Modern periodic table (1 question, 33%) have been asked the most. Periodic properties has also led over the last five years, with 1 question.
- 1If an element with is discovered, then which group of elements will it belong to?2024Modern periodic table
- 2The first to fifth ionization energies (IE) of two p-block elements and are given below. The number of valence electrons in and respectively2022Periodic properties
- 3Which among the following is NOT correct regarding the first ionization potential of period III elements and S ?2020Periodic properties
Frequently Asked Questions
1.How many questions are available for Classification of Elements and Periodicity in Properties?
This chapter includes 3 questions compiled from IAT (IISER) papers spanning 2020 to 2024.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Classification of Elements and Periodicity in Properties chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Classification of Elements and Periodicity in Properties an important chapter for IAT (IISER) Chemistry?
Classification of Elements and Periodicity in Properties has appeared in 3 of the 10 years of IAT (IISER) papers covered here, with 3 questions across 3 papers - about one per paper it appears in.
4.What is the difficulty level of Classification of Elements and Periodicity in Properties questions in IAT (IISER)?
Of the 3 questions analysed for this chapter, 33% are easy, 67% moderate and 0% tough. 2024 had the most, with 1 question.
5.Which topics in Classification of Elements and Periodicity in Properties should I focus on?
These topics have carried the most weightage in Classification of Elements and Periodicity in Properties:
- Periodic properties - 2 questions (67%)
- Modern periodic table - 1 question (33%)
6.Is Classification of Elements and Periodicity in Properties's weightage in IAT (IISER) going up or down?
Across all 3 papers analysed, Classification of Elements and Periodicity in Properties has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has fallen, at about 0.3 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.