4
Subjects
Biology, Chemistry, Mathematics, Physics
IISER Aptitude Test
IAT - IISER Aptitude Test
Timed PYQ mocks, year-wise practice, subject-wise review, and detailed post-submit solutions for the IISER Aptitude Test.
Subjects
4
Questions
Usually 60
Duration
180 min
Marking
+4 / -1
Usually 60
Questions
Question count follows verified paper data
180 min
Duration
Full-length timed attempt mode
+4 / -1
Marking
0 for unattempted questions
9
PYQ mocks
2026, 2025, 2024, 2023, 2022, 2021, 2019, 2018, 2017
What's free vs premium?
Free
Open to everyone.
- IAT overview and subject-lane breakdown
Free with login
Create a free account to access this.
- All IAT PYQ mocks (every year)
- Score, subject review, and detailed solutions after submission
Year-wise papers
IAT PYQ mocks
Showing 3 of 9.
Subject lanes
The IAT paper stays organized by four science lanes
The standard lane labels are shown for orientation; exact available question count still follows each year file.
Q1-Q15
Biology
Life-science reasoning, genetics, cell biology, ecology, and physiology.
Q16-Q30
Chemistry
Physical, organic, and inorganic chemistry across the full paper.
Q31-Q45
Mathematics
Algebra, calculus, coordinate geometry, vectors, and probability.
Q46-Q60
Physics
Mechanics, waves, optics, electricity, modern physics, and experiments.
Workflow
From paper choice to solution review
Choose a PYQ paper
Open a verified IISER Aptitude Test paper, year by year.
Attempt in timed mode
Solve one question at a time with the timer visible.
Submit and see your score
Marks, attempted/unattempted count, and accuracy after you submit.
Review answers and solutions
Compare with official answers and study detailed solutions.