IISER Entrance Exam Preparation 2026: Tips, Strategy & Guide
Indian Institutes of Science Education and Research Entrance Exam 2026 ( IISER Entrance Exam )
IISER Aptitude Test 2026 Hall Ticket
24 May '26 - 7 Jun '26
Preparation is a major part of entrance exam. Students who are appearing for IISER entrance exam must have a proper preparation strategy. This will help to score good marks in IISER 2026. A good mark will lead to high rank. IISER is conducted for 240 marks. Students need to score 195+ marks for IAT rank between 1 to 100. To start IISER preparation focus on exam syllabus and pattern. IISER syllabus are based on Physics, Chemistry, Mathematics, and Biology.
Students must dedicate 8+ hours for preparations. Focus on the weaker topic, then move towards high weightage topics in IISER. Moreover, practice IAT mock test and previous year question papers. They will help in self assessment, getting familiar to exam difficulty level and improve time management. IISER Berhampur will conduct IISER Aptitude Test in June 7, 2026. Check the page for IISER preparation tips 2026.
- IISER Exam Preparation: Highlights
- Section Wise IISER 2026 Preparation
- Best Book for IISER Preparation 2026
- IISER 2026 Mock Test & PYQs
- FAQs Regarding IISER Entrance Exam Preparation
IISER Exam Preparation: Highlights
IISER is the most competitive exam for Science students. The questions in the IISER exam are conceptually based. Students need to focus more on concepts and formulas to perform well in the exam. Before you start the IISER 2026 preparation, focus on these point.
- Understand the Exam Pattern and Marking Scheme.
- Get the prescribed Exam syllabus for the applied course.
- Get all the study material you can to prepare better for the IISER Entrance Exam.
- Create a day-to-day and weekly timetable on how much material you can study daily.
Also Read: IAT 2026 Most Important Topics; Check Subject-wise Important Chapters List Here
Commonly asked questions
IISER is a compulsory entrance test to get into the IISER Pune. IISER 2026 entrance exam will be conducted in computer-based test mode. The duration of the entrance exam is three hours, from 9 AM to 12 noon.
Section Wise IISER 2026 Preparation
IAT 2026 will evaluate candidates' knowledge and aptitude in four subjects: Biology, Mathematics, Physics and Chemistry. Since there are four different subjects which the candidates need to study, therefore a strategy must be prepared by the candidates in order to ace the IISER 2026 Entrance Examination. Let's see how to study Physics, Chemistry, Math, Biology for the IISER aptitude test.
IISER 2026 Chemistry Preparation Tips
An aspirant needs to study Chemistry into three different domains, which are namely, Organic Chemistry, Physical Chemistry, and Inorganic Chemistry. There will be 15 questions asked from chemistry in the IISER 2026 examination. For every correct answer, the candidate will be awarded +4 marks. Negative Marking is -1.
The best way to study Organic Chemistry for the IISER Aptitude Test is through understanding the concept very thoroughly, which is given in the NCERT Books and then revising it again and again. Write a summary of important points. Start with the basics and then move ahead with complex concepts. Practice problems each time you study a topic. Make a separate notebook for named reactions & their mechanism and revise it daily.
For Physical Chemistry, study from the NCERT and have your concepts clarified at your coaching institute. To become good at Physical Chemistry, you need to develop problem-solving skills. Be thorough with all the formulae. Solve good quality problems in Physical Chemistry.
Inorganic Chemistry involves a lot of mugging up the concepts. Study the NCERT Books of classes 11 and 12 properly.
IISER 2026 Physics Preparation Tips
Aspirants need to be thorough with the IISER 2026 Syllabus. Here, candidates need to be well acquainted with the topics that they need to ace to score well in the science entrance exam. The topics that form a part of the Physics syllabus include:
- Mathematical Methods
- Mechanics and General Properties of Matter
- Oscillations, Waves and Optics
- Electricity and Magnetism
- Kinetic theory, Thermodynamics
- Modern Physics
- Solid State Physics
- Devices and Electronics
IISER 2026 Mathematics Preparation Tips
This section has 15 questions. IISER Mathematics questions are based on topics like trigonometry, algebra, probability, calculus, vector & 3D geometry, etc. To practice these topics, focus on formulas and shortcuts to solve the problems. It is important to practice more problems to achieve better results. Here we have mentioned the list of topics most asked in the IISER exam.
| Chapter | Approx. No. of Questions |
| Sets, Relations & Functions | 1 |
| Trigonometry | 1 |
| Algebra (Complex, Quadratics) | 2 |
| Calculus (Limits, Derivatives) | 2â3 |
| Integrals & Applications | 1â2 |
| Vectors & 3D Geometry | 2 |
| Probability | 1â2 |
| Matrices & Determinants | 1 |
IISER 2026 Biology Preparation Tips
In IISER, all sections have the same weightage. This is the most important section for the Biology sections. Good conceptual knowledge can help to score high marks. Focusing on topics like human physiology, plant physiology, genetic & evolution, cell structure & function will help to score high in Biology sections. The NCERT textbook will be the best for Biology preparation.Â
Commonly asked questions
The IISER Entrance Exam syllabus is in tune with the Class 11 and 12 Board exam syllabus. The questions in the examination are asked from four domains of the Science subject, which are Mathematics, Biology, Chemistry, and Physics.
As per the syllabus mentioned in the information brochure of IISER, it is observed that in the Biology subject maximum syllabus is covered from the Class 12 book. For the subjects of Physics, Mathematics and Chemistry, the syllabus is equally distributed in Class 11 and 12.
The IISER Entrance Exam 2026 pattern is expected to remains same as last year. IAT consists of 60 questions, 15 questions each from Biology, Chemistry Mathematics, and Physics. There will be four answer options. Total time for answering the test is 180 minutes. Questions are multiple choice type with only one correct answer. The mode of the exam is computer-based.
Best Book for IISER Preparation 2026
Books are best for building conceptual knowledge. But choosing the right book is important. Students can refer to the books suggested by IISER toppers or faculty members. The NCERT test is considered the best for Chemistry & Biology preparation. Here are a few IISER books for preparation.
| Subject | Books Name |
| Physics |
|
| Chemistry |
|
| Mathematics |
|
| Biology |
|
Also Read: IISER entrance exam 2026 books
Commonly asked questions
The IISER Entrance Exam Marking Scheme is given below.
| Section | Marks |
|---|---|
| Physics | 60 |
| Mathematics | 60 |
| Chemistry | 60 |
| Biology | 60 |
Each section carries 15 marks.
The question paper will be in English and Hindi languages. The candidates must read all the given instructions provided in the question papers at the time of examination.
IISER 2026 Mock Test & PYQs
Candidates must practice the IISER mock test regularly. This helps them to get familiar with the online exam platform and exam difficulty level. The duration of each mock test is three hours. Daily practice will help students to improve their time management skills. Similarly, solving IISER PYQs will help to identify high-weightage topics and self-assessment. The key benefits of practising the IISER mock test and previous year questions are mentioned below.
- IISER's previous year question paper helps you know what types of questions are asked and the most repeated topics. Students also get to know the paper's difficulty level.
- IISER mock tests are based on the exam syllabus and paper pattern. So, it is important to keep track of performance.
- Various types of questions are available in mock & previous year question papers, which make students ready to solve any tricky question easily.
- Keep track of mock tests and PYQs performance. This will help students to focus on the weaker section.Â
Commonly asked questions
The IISER Entrance Exam questions are objective type. These are multiple-choice questions with four options. The mode of the exam is computer-based. Test-takers have to select one option. Marks per question is four. One mark will be removed for wrong answers.
FAQs Regarding IISER Entrance Exam Preparation
Take a look at the frequently asked questions (FAQs) regarding IISER Entrance Exam 2026 Preparation.Â
IISER Aptitude Test difficulty level is comparatively easier than JEE Main exam difficulty level. There are four sections in the exam, and all have equal weightage. Mentioned below are the details for the same:
- Biology: This section might sound a tough nut to crack for the PCM students, but a reasonable understanding of class 11 and 12 NCERT concepts can help you sail through this section. If you are not familiar with Biology try to ace the Maths section. As the number of test-takers has grown over the years, this section has also seen a surged difficulty level.
- Maths: For the Biology students, it might be hard to crack. You need to focus on 11th and 12th class concepts. You can search for the doable questions and solve them. The level is usually at par or even above JEE Mains. The Biology students can cover the scores in their specialised section.
- Physics and Chemistry: This section is usually easier than the above two sections. The scores obtained here can make-or-break your chances for counselling. The questions in these two sections cover the fundamental and essential concepts. It is better to score well in these two sections. The sections are not really tough. They are far away from the difficulty level of JEE Advance.
Overall, the exam is far from easier than JEE Advanced exam. The Biology students have the advantage to finish their section quicker. Make sure your fundamentals are clear and your reasoning ability is good. This should be enough to secure a good score.
Stepwise Preparation for the IISER Entrance Exam
Step 1: Understand the Exam Pattern and Marking Scheme.
Step 2: Get the prescribed Exam syllabus for the applied course.
Step 3: Get all the study material you can to prepare better for the IISER Entrance Exam.
Step 4: Create a day-to-day and weekly timetable on how much material you can study on a daily basis.
The IISER entrance exam is of 240 marks. Each question carries four marks. There is a minus one mark for each wrong answer. No marks will be removed for questions not answered. There are 60 marks in each of the four sections. All questions are objective type and have four answer options. Students have to select one option only. Sections tested in the exam are PCMB.
IISER Exam pattern for the academic session 2026-27 is yet to be announced. However, last year pattern remains to be same as of the previous year of IISER Entrance Exam which was also conducted in online mode i.e., computer-based. The only change which is made by the exam conducting body is the marks awarded for each correct anwer.
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IISER Entrance Exam Exam
Student Forum
Anything you would want to ask experts?Answered a week ago
Students can create an IISER login id and password during registration. The details required to register for IISER are Name, Date of birth, gender, citizenship status, Â mobile number, and email address.
V
Contributor-Level 10
Answered a week ago
No, IISER registration was over on April 13, 2026. Students were able to register for IAT 2026 from March 5 to April 13.
V
Contributor-Level 10
Answered a week ago
IAT user id is (application number / registration number). It is created during the IISER registration process. After the registration is over, user id and password are sent to the registered email address and mobile number.Â
V
Contributor-Level 10
Answered 2 months ago
IISER answer key will be released on June 7, 2026. Candidates can download the answer key online. The answer key challenge window will open on June 9, 2026.
V
Contributor-Level 10
Answered 2 months ago
The IISER exam date is June 7, 2026. The exam will commence at 9 AM and continue till 12 PM. It is a computer-based test.
V
Contributor-Level 10
Answered 2 months ago
IISER score 200 or above is a good marks. It can help to get admission to IISER Pune and IISc Bangalore. Candidates must have a good conceptual knowledge, give priority to all four subjects. Prepare for the exam according to the exam syllabus and take mock test to score above 200.
V
Contributor-Level 10
Answered 2 months ago
Based on previous year analysis, IAT exam is moderately difficult. It requires strong conceptual knowledge. Students who have prepared properly for exam can easily score good marks.
V
Contributor-Level 10
Answered 2 months ago
It is quite difficult for the GEN / OBC category to get admission to IISER with 50 marks. Even the reserved category students have less chance in the later counelling round for admission. To secure admission, students must score above 150 marks.
V
Contributor-Level 10
Answered 2 months ago
IISER exam is considered of moderate difficulty level. Majority of students finds Physics, and Mathematics challenging. PCM students may find biology tough while PCB students might find Mathematics tough. However, the difficulty level of IISER compared to JEE Main and Advanced is moderate to easy.
V
Contributor-Level 10
Answered 2 months ago
The last date to apply for IISER 2026 was April 13, 2026. IAT application form was available on the website, iiseradmission.in.Â
V
Contributor-Level 10
11 Institutes accepting IISER Entrance Exam
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How to create IISER login ID and Password?