If you’re preparing for the IISER Aptitude Test (IAT), solving IISER previous year question papers is one of the smartest (and most underrated) ways to boost your score. PYQs don’t just “give practice”—they teach you the real level of the exam: question style, difficulty, common traps, and how balanced the paper is across Physics, Chemistry, Maths, and Biology.
In this post, you’ll get:
- A quick overview of IISER + IAT
- Exam conducting authority and key details
- Exam overview table
- IISER exam pattern table
- Direct place to download papers (PYQP page)
What is IISER?
IISER stands for Indian Institutes of Science Education and Research. These are premier institutes in India focused on high-quality science education and research.
As listed on PYQP, the seven IISERs are: Pune, Kolkata, Mohali, Bhopal, Thiruvananthapuram, Tirupati, and Berhampur.
What is the IISER Aptitude Test (IAT)?
IISER Aptitude Test (IAT) is a national-level entrance exam used for admission into undergraduate science programs offered by IISERs (and also considered by some other institutes/programs depending on the year).
A key update mentioned in IISER Pune’s official placement brochure is that from 2024 onwards, admission is through the State & Central Boards channel via IAT, and IAT is the exclusive channel for admission in IISERs.
Exam Conducting Authority
The IAT is administered under the IISER Joint Admission Committee (IISER-JAC) framework.
Also, the official application portal for IISER Admissions shows helpdesk details using a JAC + IISER email identity (jac.iisertirupati.ac.in), which aligns with the “JAC” admission structure.
In simple words: Admissions are coordinated centrally (JAC), and the process runs through the official IISER admissions system.
IISER IAT Exam Overview
| Particular | Details |
|---|---|
| Exam Name | IISER Aptitude Test (IAT) |
| Purpose | Admission to UG science programs in IISERs (and other linked programs depending on year) |
| Conducting / Admin | IISER Joint Admission Committee (IISER-JAC) |
| Mode | Computer Based Test (CBT) |
| Duration | 3 Hours |
| Subjects | Physics, Chemistry, Mathematics, Biology |
| Total Questions | 60 (15 per subject) |
| Total Marks | 240 |
| Marking | +4 correct, −1 incorrect, 0 unattempted |
| Medium | English / Hindi |
IISER IAT Exam Pattern
| Subject | Questions | Marks |
|---|---|---|
| Physics | 15 | 60 |
| Chemistry | 15 | 60 |
| Biology | 15 | 60 |
| Mathematics | 15 | 60 |
| Total | 60 | 240 |
Why IISER Previous Year Question Papers Matter So Much
Most students read theory for months, but their score doesn’t move much—because the gap is not “knowledge”, it’s exam application.
Here’s what IISER previous year question papers help you master:
- Real exam difficulty (not guesswork)
- Time management (3 hours feels short in IAT)
- High-frequency topics (what repeats often)
- Accuracy under negative marking
- Section balancing (don’t over-invest in only 1–2 subjects)
Even PYQP highlights that previous papers help understand pattern/syllabus and track preparation progress.
Download IISER Previous Year Question Papers
| Paper Year | Download Links Hindi | Download Links English |
|---|---|---|
| 2024 | Click here | Click here |
| 2023 | Click here | Click here |
| 2022 | Click here | Click here |
| 2021 | Click here | Click here |
| 2019 | Click here | Click here |
| 2018 | – | Click here |
| 2017 | Click here | Click here |
How to Use IISER Previous Year Question Papers
Use this 3-step method (it works even if your syllabus isn’t 100% complete):
Step 1: Start with “Learning Mode”
- Don’t use a timer for the first paper.
- Solve calmly, and write down:
- topics you couldn’t recall
- formulas you missed
- questions you guessed
Goal: build familiarity.
Step 2: Shift to “Exam Mode”
- Set a timer for 180 minutes
- Attempt like real exam:
- Don’t pause
- Don’t check answers mid-way
- After the test, do deep analysis:
- wrong due to concept?
- wrong due to silly mistake?
- wrong due to time pressure?
Goal: build exam temperament.
Step 3: Create a “Mistake Notebook”
Make 4 pages:
- Physics mistakes
- Chemistry mistakes
- Maths mistakes
- Biology mistakes
For each wrong question, write only:
- topic name
- why you got it wrong
- correct approach in 3–5 lines
Revise this notebook every week. Your accuracy improves fast.
Strategy Tip: How Many PYQs Should You Solve?
A strong target is:
- 5–7 full papers in exam mode (timed)
- plus topic-wise PYQ practice after each mock
If you have limited time:
- Do last 3 years timed
- Then revise mistakes and redo them after 7 days
Common Mistakes Students Make With IISER PYQs
- Solving without analysis (biggest mistake)
- Not tracking accuracy (negative marking hurts)
- Ignoring one subject (paper is balanced—15 questions each)
- Doing PYQs too late (start early—even with partial syllabus)
FAQs: IISER Previous Year Question Papers
1) Where can I download IISER previous year question papers?
You can download year-wise IISER/IAT previous papers from PREVIOUS PAPERS PRO.
2) What is the exam pattern of IISER IAT?
IAT is a CBT exam with 60 MCQs: 15 each from Physics, Chemistry, Maths, Biology. Total 240 marks, +4/−1 marking.
3) Who conducts the IISER Aptitude Test (IAT)?
Admissions are administered under the IISER Joint Admission Committee (IISER-JAC) framework, and official admissions run via the IISER admissions system.
STAY TUNED TO PREVIOUS PAPERS PRO FOR PREVIOUS YEAR PAPERS 🙂