IISER IAT · Past papers
IISER IAT previous year question papers (2017-2026)
Every paper as set. Read free, sit as a timed mock, or download a PDF.
The IISER IAT paper at a glance
IISER Aptitude Test
60 questions · 240 marks · 180 min
Biology 15, Chemistry 15, Mathematics 15, Physics 15
Marking: +4 for a right answer, -1 for a wrong one (a quarter of its marks).
Earlier papers had 59 questions.
All 9 papers, newest first
IISER IAT 2026 question papers
1 paper
IISER IAT 2025 question papers
1 paper
IISER IAT 2024 question papers
1 paper
IISER IAT 2023 question papers
1 paper
IISER IAT 2022 question papers
1 paper
IISER IAT 2021 question papers
1 paper
IISER IAT 2019 question papers
1 paper
IISER IAT 2018 question papers
1 paper
IISER IAT 2017 question papers
1 paper
What 9 sittings of IISER IAT papers show
Average questions a paper, counted from every published IISER IAT past paper.
IISER Aptitude Test: questions by subject (of 60)
- Chemistry15
- Mathematics15
- Biology15
- Physics14.9
Questions students ask
How many questions are in each IISER IAT paper?
The IISER IAT paper has 60 questions for 240 marks in 180 minutes. Earlier papers had 59 questions.
Does IISER IAT have negative marking?
Yes. +4 for a right answer, -1 for a wrong one (a quarter of its marks). A question you leave blank loses nothing.
Which IISER IAT papers are here?
9 papers from 2017 to 2026. Not here: 2020.
Do the papers have solutions?
Yes. Read any paper online and tap a question to see its answer and worked solution.
Can I download these papers?
Every paper is free to read online and to sit as a timed mock, and each one downloads as a PDF with its answer key.