By examining the important topics of the IAT 2026 for IISER Aptitude Test 2026, test-takers will be able to prepare and be better organized for the IAT 2026, and this can help them score better in the IAT 2026.
IAT (IISER Aptitude Test) is a very important test also called IISER Entrance Exam for students studying for admission at the reputable IISERs in India. It is a test designed to measure an undergraduate's aptitude in the general areas of science, namely Physics, Chemistry, Mathematics, and Biology, and is an important test to study for using the complete IISER Aptitude Test syllabus. However, it is a good way to study the important topics, to prepare for the whole syllabus. You will find when you are studying for the IAT that the IAT syllabus 2026 is very large.
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- IISER Aptitude Test 2026 Important Topics
- IISER Entrance Exam 2026: Chapter Wise Weightage
- Advantages of Studying IAT 2026 Important Topics
- IISER 2026 Entrance Exam Pattern
- IISER Marks vs Rank
IISER Aptitude Test 2026 Important Topics
Also Read: Important Topics of Biology for IISER Entrance Exam 2026; Check Topics and Subject Weightage
IISER Entrance Exam 2026: Chapter Wise Weightage
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Check out the IISER exam 2026 chapter wise weighatge of Mathematics, Physics, Chemistry and Biology subjects from here:
Physics Chapter-wise Weightage
| Chapter | Approx. No. of Questions |
|---|---|
| Kinematics | 1–2 |
| Laws of Motion | 1–2 |
| Work, Energy & Power | 1 |
| Rotational Motion | 1 |
| Thermodynamics | 1–2 |
| Oscillations & Waves | 1 |
| Electrostatics | 1 |
| Current Electricity | 1–2 |
| Magnetism & EMI | 2 |
| Optics | 1–2 |
| Modern Physics (Atoms/Nuclei) | 1–2 |
| Chapter | Approx. No. of Questions |
|---|---|
| Atomic Structure | 1 |
| Chemical Bonding | 1–2 |
| Thermodynamics | 1 |
| Equilibrium | 1–2 |
| Redox Reactions & Electrochem. | 1 |
| Chemical Kinetics | 1 |
| Organic Chemistry – Basics | 1–2 |
| Hydrocarbons & Functional Grps | 2–3 |
| Coordination Compounds | 1 |
| Biomolecules | 1 |
| Chapter | Approx. No. of Questions |
|---|---|
| Sets, Relations & Functions | 1 |
| Trigonometry | 1 |
| Algebra (Complex, Quadratics) | 2 |
| Calculus (Limits, Derivatives) | 2–3 |
| Integrals & Applications | 1–2 |
| Vectors & 3D Geometry | 2 |
| Probability | 1–2 |
| Matrices & Determinants | 1 |
| Chapter | Approx. No. of Questions |
|---|---|
| Cell Structure & Function | 1–2 |
| Genetics & Evolution | 2–3 |
| Human Physiology | 3–4 |
| Plant Physiology | 2 |
| Reproduction | 1 |
| Biotechnology | 1 |
| Ecology | 2 |
| Diversity of Life/Structural Org. | 1 |
Advantages of Studying IAT 2026 Important Topics
Benefits of Reviewing IAT 2026 Important Topics.There are many good reasons to organize your studying around the important topics for the IAT 2026:
Efficiency and Focus
Maximize Your Exam: When you focus your studying on high-yield topics, you are ensuring that you are spending your study time on aspects that will be most tested and as a result, add to your score.
Confident Test-Taker: Knowing these important areas will lead to a solid understanding of these topics as well, allowing you to feel confident with some of the harder questions on the test.
Strategically Manage Your Time
Identify the Important Topics First: When you prioritize the important topics you will make sure you have a solid understanding of what will be heavily tested and then proceed to the less frequently tested topics. By following this plan, you will avoid scrambling at the end and not having covered all important material.
Time for Advanced Topics: As you prioritize the important topics you will have extra time and a stronger mind to study advanced material for any extra points which can be tested.
IISER 2026 Entrance Exam Pattern
The IISER Entrance Exam Marking Scheme is as follows:
| Subject |
No. of Questions |
Marks |
|---|---|---|
| Physics |
15 |
60 |
| Chemistry |
15 |
60 |
| Biology |
15 |
60 |
| Mathematics |
15 |
60 |
| Total |
60 |
240 |
IISER Marks vs Rank
IAT candidates' ranks will be 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. Below is a table for the expected IISER 2024 ranks corresponding to different score ranges.
| IISER 2024 Score (Out of 240) | Expected IISER 2024 Rank |
|---|---|
| 200 and above | Rank 1 to 80 |
| 200-160 | Rank 81- 200 |
| 160- 110 | Rank 201 to 800 |
| 110-95 | Rank 800 to 1500 |
| 95-75 | Rank 1500- 2000 |
| < 60 | Above 2000 |
Read More: IAT Exam Cut Off (OUT): Check IISER, IISc Banglore & IIT Madras Cut Off/ Closing Rank Here
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