IISER 2026 Official Question Paper (OUT): Download IAT Previous Year Question Paper PDF Free

IISER 2026 exam pattern is out. No changes have been made in the IISER entrance exam pattern.  The exam was conducted as a computer-based test for three hours. There were 4 sections in the IISER question paper. Each section carries 15 questions. 

The question paper was in English and Hindi. The candidates must read all the given instructions provided in the question paper at the time of the examination.

IISER entrance examination provides admission to candidates in the five-year-long BSMS dual degree programme offered by them. On the basis of a candidates score in the IISER Entrance Exam (also known as IISER aptitude test), he/she can secure admission at IISER located in Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, or Tirupati. Since it is an undergraduate degree, the syllabus for the examination is confined to class 11 and 12 subjects which are Physics Chemistry Biology and mathematics. Candidates can find the complete syllabus in the information brochure of the IISER on the official website. For detailed syllabus, candidates can view the below Shiksha link- https://www.shiksha.com/science/iiser-entrance-exam-syllabus.

IISER Marks vs Rank is generally the data interpretation of the candidates who had appeared in the IAT examination. Here, candidates will be able to know the expected AIR rank/ category rank that they will achieve based on the marks scored by them in the IISER examination. 

IAT candidates' ranks are based on their combined scores from the four sections (Physics, Chemistry, Mathematics and Biology). The exam comprises 60 questions with a total score of 240 marks. 

Indian Institutes of Science Education and Research conduct an entrance exam in order to provide admission to candidates in the five year long BSMS dual degree programme offered by them. On the basis of a candidates score in the IISER Entrance Exam also known as IISER aptitude test, he/she can secure admission at IISER located in Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, or Tirupati. Candidates who cleared their Class 12 in the Science stream are eligible to apply for the IISER Entrance Exam 2023. As per the IISER Entrance Exam pattern, there are a total of 60 objective questions that candidates need to complete in three hours duration.

IISERs offer admission into courses leading to BSMS Dual Degree and BS Degree (only at IISER Bhopal) Programs. Below are the programmes offered by IISERs:

1. Biological Sciences
2. Chemical Sciences
3. Earth & Climate Sciences/Earth & Environmental Sciences
4. Economic Sciences
5. Engineering Sciences (Chemical Engineering, Data Science & Engineering, Electrical Engineering & Computer Science)
6. Geological Sciences
7. Integrated & Interdisciplinary Sciences (Biological Sciences, Chemical Sciences, Mathematical Sciences, Physical Sciences)
8. Mathematical Sciences
9. Physical Sciences.

Earlier, there were three channels through which candidates could get admissions to the courses offered at IISER institutions, IISc Bangalore and IIT Madras. From the academic session 2025, admissions are done through the IAT exam channel only, and the other two channels, including JEE Main and KVPY scores, have been discontinued.