ACTIVE 2026National Level
IISER 2026
Complete exam preparation resource — syllabus, exam pattern, important dates, admit card & free mock tests all in one place.
Lakhs of Aspirants
Verified Information
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Participating Institutions
I
IISER (all 7 campuses: Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, Tirupati)
Courses: 5-Year BS-MS Dual Degree
I
IISER Bhopal
Courses: B.Tech Chemical Engineering, B.Tech Data Science & Engineering, B.Tech Electrical Engineering & Computer Science, BS Economic Sciences
I
IISER Tirupati
Courses: BS Economic and Statistical Sciences
Eligibility Criteria
Candidates must have passed Class 12 (or equivalent) in 2024, 2025, or 2026 from a board recognized by COBSE/AICTE/State Board of Technical Education in India. There is no fixed minimum percentage cutoff prescribed by IISER itself; eligibility is primarily based on qualifying the IAT and rank obtained. Foreign nationals, OCI, and PIO candidates are also eligible, subject to submission of an equivalence certificate from the Association of Indian Universities where applicable.
Category
Details
Category
Full Exam Name
DetailsIISER Aptitude Test (IAT)
Category
Conducting Body
DetailsRotational among 7 IISERs; IAT 2026 conducted by IISER Berhampur
Category
Programs Offered
Details5-Year BS-MS Dual Degree, 4-Year BS, and B.Tech
Category
Participating Institutes
Details7 IISERs + IISc Bangalore, IIT Madras, IIT Guwahati, IACS Kolkata, IIEST Shibpur
Category
Total Seats
DetailsApprox. 2,343 (2,043 BS-MS + 300 BS/BTech)
Category
Exam Mode
DetailsComputer Based Test (CBT)
Category
Exam Duration
Details180 minutes (3 hours)
Category
Number of Questions
Details60 (15 each from Physics, Chemistry, Mathematics, Biology)
Mock Tests & Structure
Test Pattern Details
Total Marks
240
Marking Scheme
+4 for correct answer, -1 for wrong answer, 0 for unattempted
Duration
180 minutes
Total Questions
60
Number of Sections
4 (Physics, Chemistry, Mathematics, Biology)
Exam Schedule
Activity
Timeline
Activity
Provisional Answer Key Release
Timeline
7-Jun-2026
Activity
Answer Key Objection Window
Timeline
9-Jun-2026 to 13-Jun-2026
Activity
Result / Final Answer Key Declaration
Timeline
29-Jun-2026
Activity
Counselling Registration & Choice Filling
Timeline
2-Jul-2026 to 9-Jul-2026
Syllabus
Physics
- Units and measurement
- Kinematics
- Laws of motion
- Work energy and power
- Rotational motion
- Gravitation
- Mechanical properties of solids and fluids
- Thermodynamics
- Kinetic theory
- Oscillations and waves
Chemistry
- Basic concepts of chemistry
- Structure of atom
- Chemical bonding
- States of matter
- Thermodynamics
- Equilibrium
- Redox reactions
- Periodic table
- p/d/f-block elements
- Coordination compounds
Mathematics
- Sets and functions
- Algebra
- Coordinate geometry
- Calculus (limits
- continuity
- differentiation
- integration)
- Trigonometry
- Matrices and determinants
- Probability
Biology
- Diversity of living organisms
- Structural organization in plants and animals
- Cell structure and function
- Plant physiology
- Human physiology
- Reproduction
- Genetics and evolution
- Biology and human welfare
- Biotechnology
- Ecology and environment
Notifications & Past Events
Date
Event
Date:
Jun 2025
IAT 2025 Exam Conducted
Date:
Jun 2024
IAT 2024 Exam Conducted
Date:
Jul 2023
IAT 2023 Exam Conducted
Date:
Jul 2022
IAT 2022 Exam Conducted
Date:
Jun 2021
IAT 2021 Exam Conducted
Date:
Jul 2020
IAT 2020 Exam Conducted
Date:
May 2019
IAT 2019 Exam Conducted
Exam Pattern
Section
Questions
Duration
Physics
Questions15
DurationIncluded in 180 minutes
Chemistry
Questions15
DurationIncluded in 180 minutes
Mathematics
Questions15
DurationIncluded in 180 minutes
Biology
Questions13
DurationIncluded in 180 minutes
Total
Questions60
Duration180 minutes
Frequently Asked Questions
IAT (IISER Aptitude Test) is the national-level entrance exam for admission to BS-MS, BS, and BTech science programmes at the seven IISERs and select partner institutes like IISc Bangalore.
Candidates must have passed Class 12 or equivalent in 2024, 2025, or 2026 from a recognized board. Indian citizens, OCI, PIO, and foreign nationals can apply.
60 MCQs (15 each from Physics, Chemistry, Mathematics, Biology), 240 total marks, +4/-1 marking, 3-hour duration, computer-based test.
Counselling registration opened on 2 July 2026 (5:00 PM) and closes on 9 July 2026, covering preference filling, seat allotment, document verification, and fee payment.