Engineering & Technology
IISER (IAT)
For the Scientists.
Specialized content for the IISER Aptitude Test (IAT), covering conceptual understanding across the core sciences.
Official Notification Expected: 1 Feb 2027
📚 Full notes library available — Physics, Chemistry, Mathematics & Biology, chapter by chapter.Explore →Subjects Covered
Key Resources
- ✓Conceptual notes
- ✓IAT previous year papers
Important Dates
Official Notification Expected
Next1 Feb 2027 · Expected first week of February 2027 — not released yet
Exam Date (expected)
6 Jun 2027 · Tentatively first week of June 2027, computer-based, 3 hours
No official notification has been released yet — dates above are estimated from previous exam cycles and will be updated once announced.
Study Materials
View all →Biology Conceptual Notes for IAT
Biology · Notes · 33 pages
Frequently Asked Questions
What makes IAT different from JEE?+
IAT emphasizes conceptual and scientific reasoning over speed-based problem solving, and includes Biology as a core subject option.
Do I have to attempt all four subjects in IAT?+
No. IAT typically lets you choose questions from three out of the four subjects (Physics, Chemistry, Mathematics, Biology), so you can skip the subject you're weakest in.
Which institutes accept the IISER Aptitude Test score?+
IAT scores are used for admission to the BS-MS dual degree program across all seven IISERs (Pune, Kolkata, Mohali, Bhopal, Thiruvananthapuram, Tirupati, and Berhampur).
Is there an alternative to IAT for IISER admission?+
Yes — IISERs have historically also admitted a portion of students through KVPY (where still applicable) or JEE Advanced-based channels alongside IAT, though policies can change each year, so check the current admission brochure.
How is IAT different in difficulty compared to board exams?+
IAT questions are conceptually deeper than typical board exam questions, testing scientific reasoning and application rather than direct recall, though they don't require the intense speed and volume of practice that JEE Advanced demands.