IISER question paper for the academic session 2026-2027 will be released on the same day after the successful conduct of the examination.
IISER previous year question paper helps the candidate to get insight into the types of questions asked in the examination, the difficulty level of the exam, IISER exam pattern and other details. Candidates preparing for IISER must refer to the previous year’s question papers to gain a deeper understanding of the topics covered in Physics, Mathematics, Chemistry, and Biology subjects.
IISER 2026 is anticipated to be held in the third week of May 2026, tentatively.
Candidates can download the IISER previous year question paper from this page. Check out this SciAstra IISER exam page for all the information related to the IAT question paper PDF, exam dates, pattern and other details here.
Latest Update:
IAT 2026 to be held on June 7; Application Starts on March 5; Check New Updates & Eligibility Here
IAT 2026 Exam Dates
Since IAT 2026 admission dates are yet to be announced by the exam officials, candidates can check out the previous year’s dates from here for reference:
IISER Entrance Exam Dates 2026 | Event Date |
|---|---|
IISER 2026 Exam Notification | February 7, 2026 |
IISER Exam 2026 Registration Date | March 5, 2026 to April 13, 2026 |
IISER Aptitude Test 2026 Application Correct | April 16, 2026 to April 18, 2026 |
IISER Admit Card 2026 | May 24, 2026 |
IISER Exam 2026 | June 7, 2026 |
IISER Provisional Answer Key 2026 | June 7, 2026 |
ICandidate Response form upload & Portal opens for filing Objections | June 9, 2026 |
Portal closes for filing Objections | June 13, 2026 |
Windows for Selective Information/Document Upload in Application Form | June 13, 2026 - June 21, 2026 |
Last date for Selective Information / Document upload in Application Form | June 21, 2026 |
Where can I find IAT PYQs?
IAT PYQs are available on the official IISER admission website (iiseradmission.in) and in various preparation books and online educational platforms.
SciAstra also provides the free IAT PYQs. Click on one of the following links to access the IAT PYQs for free:
Where can I find free PYQs for IAT?
To get free PYQs, candidates must visit the official website of the IISER Aptitude Test – iiseradmission.in.
You can also find the FAQs on the following pages of SciAstra:
Why should I practice IAT PYQs?
Practising IAT PYQs helps in identifying frequently asked topics, improving problem-solving speed, and gaining familiarity with the exam format. It also enables candidates to assess their preparation level and build confidence before the actual exam.
IAT 2026 Question Paper
The exam officials have scheduled to conduct the exam on June 7, 2026, in online/CBT mode at multiple exam centres across the nation. Based on the previous year's trends, it is anticipated that the IISER 2026 question paper will be released on the same day after the sucessful conduct of the exam. Candidates will be notified here upon the release of the question paper:
IISER 2026 Question Paper | Available Soon |
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Note: Students who prefer learning concepts fully in English & Hinglish can join the English Crash Course & Hinglish Crash Course.
IAT Previous Year Question Papers
Candidates can check out the previous year question papers in Hindi and English medium from here:
Year | Question Paper English Medium | Question Paper Hindi Medium |
2025 | Download Now | |
2024 | Download Now | |
2023 | Download Now | Download Now |
2022 | Download Now | Download Now |
2021 | Download Now | Download Now |
2019 | Download Now | Download Now |
Are all four subjects (PCMB) compulsory in the IAT?
The question paper of IAT contains all four sections: Physics, Chemistry, Mathematics and Biology. But, it is not compulsory for candidates to attempt all four sections to get admission to IISERs. It is recommended to attempt all four sections to increase your overall score and chances of selection.
For admission to IIT Madras, IIT Guwahati, and IISc Bengaluru, it is compulsory to attempt Physics, Chemistry and Mathematics.
How many questions are there in the IAT question paper?
There are a total of 60 questions in the IAT question paper from Physics, Chemistry, Mathematics and Biology sections.
A total of 15 questions are asked from each section/subject. Each question carries 4 marks.
How many sections are there in the IAT question paper?
There are four sections in the IAT question paper:
1. Physics (15 questions, 60 marks)
2. Chemistry (15 questions, 60 marks)
3. Mathematics (15 questions, 60 marks)
4. Biology (15 questions, 60 marks)
All the questions in these sections are multiple-choice based questions (MCQs). These questions are asked from NCERT Class 11 and Class 12 PCB syllabi.
What is the duration of the IISER Aptitude Test (IAT)?
The duration of IISER Aptitude Test (IAT) is 3 hours (80 minutes). PwD candidates having disabilities with at least 40% impairment as applicable are eligible for one hour compensatory time in the IISER Aptitude Test. Therefore, the total duration of the exam for candidates belonging to PwD Category is 4 hours.
All the candidates will have to visit the IAT exam centre allotted to them to take the exam. It will be conducted online in computer-based test (CBT) mode.
Topic-Wise Analysis from IISER Previous Year Papers
Based on the past few years’ trends:
Subject | High-Weightage Topics |
|---|---|
Physics | Mechanics, Optics, Thermodynamics, Electrostatics |
Chemistry | Organic Reactions, Chemical Bonding, Equilibrium |
Mathematics | Calculus, Coordinate Geometry, Probability |
Biology | Cell Biology, Genetics, Ecology, Human Physiology |
Benefits of Solving IISER Previous Year Question Papers
Check out the reasons why a candidate must go through the IISER previous year question papers from here:
Understand Exam Structure – Get familiar with section-wise weightage and time allocation.
Identify Important Topics – Spot frequently repeated concepts and high-scoring areas.
Improve Speed & Accuracy – Practice under timed conditions to enhance problem-solving skills.
Boost Confidence – Familiarity with question types reduces exam-day anxiety.
Evaluate Preparation Level– Self-assess strengths and weaknesses for better revision planning
IISER Exam 2026 Test Series Launched
The SciaAstra team has recently launched a FOCUS test series, which will emphasise Full Online Controlled Understanding and Simulation, helping candidates experience the real-time environment of the IISER aptitude test 2026.
The IAT 2026 FOCUS mock test is designed based on the official exam pattern, and the difficulty level is determined through an in-depth analysis of previous years’ question papers. Candidates will get Unit-wise, Half-length, and Full-length test series, covering all chapters to assess their domain understanding, cognitive skills, and analytical abilities as per the IISER 2026 syllabus.
Attempt the IISER Exam 2026 Test Series to check your exam preparation level to get admissions to the IISERs, IISc and other reputed research institutes:
Are questions repeated in the IAT exam?
While exact questions are rarely repeated, similar concepts and question patterns often reappear in the IAT exam. Therefore, practising PYQs helps in understanding important concepts and types of questions that are likely to be asked.
How should I use IAT PYQs effectively for preparation?
Candidates should solve PYQs topic-wise during the initial phase of preparation and attempt full-length papers under timed conditions later. Analysing mistakes, understanding solutions, and revising weak areas are essential for effective preparation using PYQs.
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