Table of Contents
Introduction
The IISER Aptitude Test (IAT) is an entrance examination conducted by the Indian Institutes of Science Education and Research (IISERs) for students aspiring to enroll in their BS-MS dual degree program. These institutes are renowned for their excellence in science education and research, providing students with a strong foundation in theoretical knowledge and practical applications.
This guide offers a detailed insight into IAT 2025, covering the exam pattern, eligibility criteria, syllabus, preparation strategies, and key dates to help candidates plan effectively.
What is IAT?
The IISER Aptitude Test (IAT) serves as admission pathways to IISERs. Among these, IAT is the most widely used admission route, making it the primary selection method for IISER admissions.
The test assesses candidates’ proficiency in Mathematics, Physics, Chemistry, and Biology, ensuring they have a solid academic background in the sciences.
IAT 2025: Key Details
| Feature | Details |
| Test Name | IISER Aptitude Test (IAT) |
| Mode of Examination | Computer-Based (CBT) |
| Organizing Institute | Indian Institutes of Science Education and Research (IISERs) |
| Course Available | BS-MS Dual Degree Program |
| Subjects Covered | Physics, Chemistry, Biology, Mathematics |
| Total Score | 240 |
| Question Type | Multiple-Choice Questions (MCQs) |
| Duration | 3 Hours |
| Negative Marking | Applicable |
| Official Website | iiseradmission.in |
IAT 2025 Eligibility Criteria
1. Educational Qualification:
- Candidates should have completed or be appearing for their Class 12 (or equivalent) examination in 2025.
- Applications are open to students from recognized State or Central Boards.
2. Minimum Score Requirement:
- General/OBC Category: At least 60% marks in Class 12.
- SC/ST/PwD Category: A minimum of 55% marks in Class 12.
3. Age Requirement:
- Applicants must be born on or after January 1, 2005. (SC/ST/PwD candidates receive a 5-year age relaxation.)
IAT 2025 Exam Pattern
Understanding the exam structure is essential for strategic preparation.
| Subject | Number of Questions | Marks Allotted |
| Mathematics | 15 | 60 |
| Physics | 15 | 60 |
| Chemistry | 15 | 60 |
| Biology | 15 | 60 |
| Total | 60 Questions | 240 Marks |
- Each correct response earns 4 marks.
- A penalty of 1 mark is deducted for every incorrect answer.
- The examination is 3 hours long and conducted in online mode.
IAT 2025 Syllabus
The syllabus aligns with Class 11 and 12 NCERT topics, making NCERT books essential study resources.
1. Mathematics
- Algebra (Quadratic Equations, Matrices, Determinants)
- Calculus (Limits, Differentiation, Integration)
- Co-ordinate Geometry (Straight Lines, Circles and Conic Sections)
- Probability & Statistics
- Trigonometry
2. Physics
- Laws of Motion and Mechanics
- Electricity & Magnetism
- Thermodynamics and Heat Transfer
- Optics (Ray and Wave Optics)
- Modern Physics (Atoms, Nuclei, and Semiconductor Electronics)
3. Chemistry
- Physical Chemistry (Thermodynamics, Equilibrium, Electrochemistry)
- Organic Chemistry (Hydrocarbons, Alcohols, Biomolecules)
- Inorganic Chemistry (Periodic Table, Coordination Compounds, Chemical Bonding)
4. Biology
- Cell Biology and Biomolecules
- Genetics and Evolution
- Human Physiology
- Ecology and Environment
- Biotechnology Applications
How to Prepare for IAT 2025?
1. Develop a Strategic Study Plan
- Assign specific time slots for each subject, focusing on strengths and improving weaknesses.
- Prioritize conceptual clarity instead of rote memorization.
- Refer to NCERT textbooks as the core study material.
2. Solve PYQs Papers & Mock Tests
- Review old exam papers to understand question patterns.
- Take mock tests to become better.
3. Effective Time Management
- Maintain a balanced study schedule.
- Identify weak areas and allocate extra time for improvement.
- Take regular breaks to sustain concentration levels.
4. Best Books for IAT Preparation
- Mathematics: NCERT, R.D. Sharma
- Physics: NCERT, H.C. Verma, D.C. Pandey
- Chemistry: NCERT, O.P. Tandon (Physical Chemistry), Morrison & Boyd (Organic Chemistry)
- Biology: NCERT, Trueman’s Biology
IAT 2025 Important Dates
| Event | Date |
| Application Opening Date | March 5, 2025 |
| Last Date for Application Submission | April 15, 2025 |
| Admit Card Availability | May 15, 2025 |
| IAT 2025 Exam Date | May 25, 2025 |
| Results Announcement | June 7, 2025 |
| Counseling & Seat Allocation | June – July 2025 |
IAT 2025 Result & Admission Process
1. Steps to Check IAT Results
- Go to the official IISER website.
- Log in with your application number and password.
- Download your scorecard and review your ranking.
2. Counseling & Seat Allocation
- Admission is based on IAT scores and seat availability.
- Candidates must participate in online counseling.
- Applicants must verify documents and submit the admission fee to confirm their seat.
Conclusion
The IISER Aptitude Test (IAT) 2025 presents an excellent opportunity for students passionate about science and research. A strategic preparation plan, diligent practice, and efficient time management can help candidates secure a place in IISERs and embark on a fulfilling academic journey.
Start preparing for IAT 2025 today and take the first step toward a promising future in science! 🚀
