What is the IISER Aptitude Test (IAT)?
The IISER Aptitude Test (IAT) is a national-level entrance examination conducted for admission into the prestigious Indian Institutes of Science Education and Research (IISERs). If you dream of pursuing a career in scientific research, this exam is your gateway to some of India's finest research institutions.
How to Get a Job in ISRO – Eligibility, Exam & Selection ProcessThe IAT grants admission to the following programs:
- BS-MS (Dual Degree) — 5-year integrated program
- BS (Bachelor of Science) — 4-year program
- BTech — offered at select IISERs
IISER Exam 2026: Important Dates
- Application Start Date: 5 March 2026
- Last Date to Apply: 13 April 2026
- Exam Date: 7 June 2026
Eligibility Criteria for IAT 2026
Basic Requirements
- Must be an Indian citizen, OCI, or PIO
- Passed Class 12 in 2024, 2025, or 2026 with Science stream
- Minimum three subjects from: Physics, Chemistry, Mathematics, Biology
Minimum Marks
- General/OBC/EWS: 60% aggregate
- SC/ST/PwD: 55% aggregate
IAT Exam Pattern & Marking Scheme
The IISER entrance exam follows a straightforward Computer-Based Test (CBT) format:
- Duration: 3 hours (180 minutes)
- Total Questions: 60 MCQs
- Subject Distribution: Physics (15), Chemistry (15), Mathematics (15), Biology (15)
- Marking: +4 for correct, -1 for incorrect, 0 for unattempted
Syllabus Overview
The syllabus is based on NCERT Class 11 and Class 12 covering Physics, Chemistry, Mathematics, and Biology. The focus is on conceptual clarity, analytical thinking, and application-based problem solving.
NEST Exam 2026: NISER Entrance Test Complete GuideIISER Campuses Across India
India has seven IISERs located in: Pune, Bhopal, Kolkata, Mohali, Thiruvananthapuram, Tirupati, and Berhampur. Each campus offers world-class research facilities and academic environments.
Why Choose IISER?
- Ranked among India's top research institutions
- Strong emphasis on scientific research and innovation
- Excellent opportunities for research internships
- Pathway to higher studies in India and abroad
Expert Preparation Tips for IAT
- Master NCERT thoroughly — this is non-negotiable for IAT preparation
- Practice MCQs and solve previous year papers regularly
- Focus on Physics numericals and problem-solving techniques
- Strengthen Organic Chemistry fundamentals
- Take full-length mock tests to improve time management
Frequently Asked Questions (FAQs) – IISER Aptitude Test (IAT) 2026
1. What is the IISER Aptitude Test (IAT) 2026?
The IISER Aptitude Test (IAT) 2026 is a national-level entrance exam conducted for admission into BS-MS dual degree and other science programs offered by various IISERs across India.
EAMCET 2026: AP EAPCET & TS EAMCET Complete Guide2. Who can apply for IISER IAT 2026?
Students who have completed or are appearing in Class 12 with Science subjects (Physics, Chemistry, Mathematics/Biology) from a recognized board are eligible to apply.3. What is the minimum percentage required for IISER admission?
Candidates generally need at least 60% marks in Class 12 (55% for reserved categories). Exact eligibility criteria will be announced in the official notification.4. Which courses are offered through IISER IAT 2026?
IISERs offer BS-MS Dual Degree, BS programs, and select B.Tech or Economic Sciences programs in research-oriented fields. IISc Bangalore Admission 2026: Programs, Eligibility & How to Get In5. What subjects are included in the IAT 2026 exam?
The exam includes questions from:6. What is the exam pattern of IISER IAT 2026?
The exam is computer-based (CBT) and contains multiple-choice questions from four science subjects with negative marking.7. Is Mathematics compulsory for IISER IAT?
No. Students from Biology backgrounds can also apply. However, some programs may require Mathematics in Class 12.8. How many IISER institutes participate in IAT 2026?
Major participating institutes include:- IISER Pune
- IISER Bhopal
- IISER Kolkata
- IISER Mohali
- IISER Thiruvananthapuram
- IISER Tirupati
- IISER Berhampur
9. What is the application fee for IISER IAT 2026?
The application fee varies category-wise and is expected to be announced during the registration process.10. When will IISER IAT 2026 registration start?
The official notification and registration dates are expected in early 2026 on the official IISER admission portal.11. How should I prepare for IISER IAT 2026?
Focus on NCERT concepts, practice mock tests regularly, revise formulas, and solve previous-year questions from Physics, Chemistry, Biology, and Mathematics.12. Is NCERT enough for IISER IAT preparation?
NCERT forms the foundation, but advanced conceptual practice and mock tests are recommended for a higher score.13. Does IISER IAT have negative marking?
Yes, negative marking is usually applicable for incorrect answers.14. What is the difficulty level of IISER IAT?
The exam is considered moderate to difficult and focuses heavily on conceptual understanding.15. Can droppers apply for IISER IAT 2026?
Yes, eligible gap-year students can apply if they satisfy the age and academic criteria mentioned in the notification.
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What is IISER IAT 2026?
IISER IAT 2026 is a national-level entrance examination conducted for admission to BS-MS, BS, and select BTech programs offered by IISERs and other participating institutes. The exam tests students in Physics, Chemistry, Mathematics, and Biology.
Who is eligible for IISER IAT 2026?
Students who passed or are appearing in Class 12 with Science subjects from a recognized board in 2024, 2025, or 2026 are eligible. General category candidates need at least 60% marks, while SC/ST/PwD candidates need 55%.
Is NCERT enough for IISER IAT?
NCERT is the foundation for IISER IAT preparation. However, students should also solve previous-year papers, mock tests, and advanced conceptual questions to achieve a high rank.
What is the syllabus of IISER IAT 2026?
The syllabus covers NCERT Class 11 and Class 12 Physics, Chemistry, Mathematics, and Biology. Questions focus on conceptual understanding and analytical thinking.
CMI Admission Guide for Mathematics StudentsWhat is the exam pattern of IISER IAT 2026?
The exam is conducted in CBT mode for 3 hours and contains 60 multiple-choice questions from Physics, Chemistry, Mathematics, and Biology. Each correct answer earns 4 marks and each incorrect answer carries a penalty of 1 mark.
Can Biology students apply for IISER IAT?
Yes. Students with a Biology background can apply for IISER IAT. Mathematics is not mandatory for all programs.
Which IISER is best in India?
IISER Pune, IISER Kolkata, and IISER Bhopal are among the top-ranked IISERs known for excellent research opportunities and academic excellence.
What career opportunities are available after IISER?
Graduates can pursue research careers in organizations like ISRO, DRDO, BARC, CSIR, IITs, IISc, foreign universities, biotechnology companies, and scientific research institutions worldwide.
What is a good score in IISER IAT?
A score above 140–160 is generally considered competitive for admission to top IISER campuses, although cutoffs vary each year.
How many IISER institutes participate in IAT?
Seven IISER campuses participate in the admission process: Pune, Bhopal, Kolkata, Mohali, Thiruvananthapuram, Tirupati, and Berhampur.
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