The Indian Institutes of Science Education and Research (IISER) conduct the IISER Aptitude Test (IAT) annually to select candidates for their esteemed five-year BS-MS dual degree programs. For the academic year 2025-2026, the IAT is scheduled for May 25, 2025.
This comprehensive guide provides detailed information on registration, eligibility, exam pattern, syllabus, and preparation strategies to help aspirants navigate the IAT 2025 effectively.
Application Dates:
- Start Date: March 10, 2025
- End Date: April 15, 2025
Application Process:
- Registration: Visit the official IISER admissions portal and register using a valid email ID and mobile number.
- Form Filling: Provide personal, academic, and contact details as required.
- Document Upload: Upload scanned copies of your recent passport-sized photograph and signature in the specified format.
- Fee Payment: Pay the application fee online using debit/credit card or net banking.
- Submission: Review the application form thoroughly before final submission.
Application Fee:
- General, EWS, OBC, and OBC-NCL: ₹2,000
- SC/ST, PwD, and Kashmiri Migrants: ₹1,000
Note: The application fee is non-refundable.
To be eligible for IAT 2025, candidates must:
- Educational Qualification: Have passed the Class XII (or equivalent) examination in 2024 or appearing in 2025 with at least three subjects among Biology, Chemistry, Mathematics, and Physics.
- Minimum Marks: Secure a minimum of 60% marks (55% for SC/ST/PwD) in aggregate.
Candidates who have taken at least three subjects among Biology, Chemistry, Mathematics, and Physics during their Class XII (or equivalent) examination are eligible to apply.
Understanding the exam pattern is crucial for effective preparation. The IAT 2025 will be conducted as a computer-based test (CBT) with the following structure:
- Duration: 3 hours (180 minutes)
- Mode: Online (CBT)
- Language: English and Hindi
- Question Type: Multiple-choice questions (MCQs)
- Total Questions: 60 (15 questions each from Biology, Chemistry, Mathematics, and Physics)
- Marking Scheme:
- Correct Answer: +4 marks
- Incorrect Answer: -1 mark
- Unanswered: 0 marks
The maximum score achievable is 240 marks.
The IAT 2025 syllabus aligns with the NCERT curriculum for Classes XI and XII. Key topics include:
Biology:
- Diversity in the Living World
- Structural Organization in Animals and Plants
- Cell Structure and Function
- Plant and Human Physiology
- Reproduction, Genetics, and Evolution
- Biotechnology and Its Applications
- Ecology and Environment
Chemistry:
- Basic Concepts of Chemistry
- Structure of Atom
- Chemical Bonding and Molecular Structure
- Thermodynamics
- Equilibrium
- Organic Chemistry Principles
- Hydrocarbons
- Electrochemistry
- Chemical Kinetics
- Coordination Compounds
- Biomolecules
Mathematics:
- Sets, Relations, and Functions
- Trigonometric Functions
- Calculus (Limits, Derivatives, Integrals)
- Vectors and Three-Dimensional Geometry
- Matrices and Determinants
- Probability and Statistics
- Sequences and Series
- Complex Numbers and Quadratic Equations
Physics:
- Physical World and Measurement
- Kinematics
- Laws of Motion
- Work, Energy, and Power
- Gravitation
- Thermodynamics
- Electrostatics
- Current Electricity
- Magnetic Effects of Current and Magnetism
- Electromagnetic Induction and Alternating Currents
- Optics
- Dual Nature of Matter and Radiation
- Atoms and Nuclei
- Electronic Devices
For a detailed syllabus, refer to the official IISER admissions website.
