IISER Entrance Exam Preparation 2025: Tips, Strategy & Guide

Indian Institutes of Science Education and Research Entrance Exam 2025 ( IISER Entrance Exam )

Ishita Chauhan
Updated on Sep 17, 2025 13:11 IST

By Ishita Chauhan, Retainer

IISER Entrance Exam Preparation is one way to qualify for an exam, but some other ways can be included during the preparation period, like practising mock tests. The IAT Mock Test 2025 link was activated by the exam authority for the test takers to get an experimental practice of the IAT 2025 exam for candidates who appeared for the IISER 2025 exam. 

The Indian Institute of Science Education and Research conducts the IISER exam to offer admission in a five-year-long BS-MS dual degree course at the institutes in India. In order to ace the national-level entrance exam, students need to prepare well, get all the right study material, solve mock tests, solve previous years' question papers and much more in order to qualify.

Students who wish to appear for the IAT exam should go through the step-wise preparation tips on this Shiksha page that can help them get an effective preparation strategy and understanding of passing a tough competitive exam. 

Also Read: 

Table of content
  • IAT 2025: Subject Wise Preparation
  • Stepwise Preparation for IISER Entrance Exam
  • How to prepare for IISER Entrance Exam
IISER Entrance Exam Logo

IAT 2025: Subject Wise Preparation

IAT 2025 Examination will evaluate based on the performance of candidates in four subjects which are namely, 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 2025 Entrance Examination. Let's see how to study Physics, Chemistry, Math, Biology for the IISER aptitude test.

IISER 2025 Chemistry Preparation Tips

An aspirant need to study Chemistry into three different domains which are namely, Organic Chemistrty, Physical Chemistry, Inorganic Chemistry. There will be 15 questions asked form the chemistry in the IISER 2025 examination. For every correct answer, candidate will be awarded with +4 marks. Negative Marking is -1.

The best way to study Organic Chemistry for IISER Aptitude Test is through understaning 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 when you study a topic. Make a separate notebook for named reactions & their mechanism and revise it daily.

For Physical Chemistry, Read from 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 concet and memorizing. Study NCERT Books of class 11 and 12 properly.

IISER 2025 Physics Preparation Tips

There will be 15 questions asked form the chemistry in the IISER 2025 examination. For every correct answer, candidate will be awarded with +4 marks. Negative Marking is -1.

Next, aspirants need to be thorough with IISER 2025 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 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
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Stepwise Preparation for IISER Entrance Exam

Here is the stepwise preparation tips for preparing IISER 2025 Entrance Examination:

  1. Understand the Exam Pattern and Marking Scheme.
  2. Get the prescribed Exam syllabus for the applied course.
  3. Get all the study material you can to prepare better for IISER Entrance Exam
  4. Create a day to day and weekly time table on how much material you can study on a daily basis.
IISER Entrance Exam Logo

How to prepare for IISER Entrance Exam

Students can follow the below-mentioned steps on how to prepare well for the entrance exam and come out with flying colours. 

Know the IISER Entrance Pattern

First and foremost, the candidate needs to understand the IISER Entrance Exam pattern. One should know the duration of the exam, the mode and medium of the Entrance Exam, how many questions will be asked and the weightage of marks. Will the question pattern be in MCQ format or have long answer questions. All the minute questions which bother you, you should know and understand before the entrance exam so that there is no trouble later on.

Know the IISER Entrance Exam Marking Scheme

Along with the exam pattern, students should know the marking scheme as well. You have to know the minute details as it can help you prepare better and hence you will have better chances of scoring. You will not have much trouble once you have the pattern in mind and know what to expect in terms of the marking scheme. You should be familiar which sections carry the most marks, how many long questions will be asked or how many questions come in a section.

To know the IISER Entrance Exam Pattern and Marking Scheme, click here.

Know the IISER Entrance Exam Syllabus

To score well in IISER Entrance Exam, candidates have to thoroughly go through the prescribed syllabus. Even if its general topics which you have covered, go through them once again. Don’t leave out anything. Strategize your plans on an hourly, daily and weekly basis. Cover all the biology, physics, chemistry and mathematics-related notes on different days. Do not mix it up, You can do so by following the below-mentioned pointers:

  • Cover the subjects thoroughly and know the important topics which have to be covered.
  • Segregate the subjects and topics into easy and difficult categories. Cover topics which you find challenging.
  • Note down the topics which carry maximum weightage (based on previous years’ question papers).

To know the IISER Entrance Exam syllabus, click here.

Go through Prep Books

Along with the syllabus, aspirants should purchase the required books for IISER Entrance Exam 2025. Through prep books, one can study better and understand the subjects and topics. You can identify where you fall behind and which are your strong points. It is advised that you purchase at least two to three prep books to help better understand the test. The prep books will give you an idea of the syllabus, know what type of questions that can be asked in the Entrance Exam and much more.

Prepare a TimeTable

One of the most important elements while preparing for an exam is time management. Make a schedule, as to how much material you can cover on a daily, weekly and monthly basis. By creating a plan, the candidate can cover all the topics which are to come in the Entrance Exam.

Refer to Past Years’ Question Papers

Solve as many question papers as you can. The best way to get a grip of what you can expect is by going through the previous year’s question papers. You can understand the weightage of marks, how many long question answers are there, you can understand which section has what type of questions and how many sections carry the maximum amount of marks where you can score well.

Revision

Revise your work at the end of the day. Whatever you have studied, revise the work, especially the important parts which you have had a tough time learning or understanding. The more revision, the more will understand the topics better.

Q&A Icon
Commonly asked questions
Q:   Which subject carries maximum weightage at IISER Entrance Examination?
Q:   What are the types of questions asked in the IISER 2025 exam?
Q:   What will be the section wise marking scheme of IISER Entrance Exam 2024?
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IISER Entrance Exam Exam

Student Forum

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Answered 2 months ago

With a 7,000 rank in the SC category, admission to any IISER (including newer campuses) is not possible as per 2025 cutoffs. Cutoff ranks for SC category in IISERs generally close between 125 (most competitive) and 750 (least competitive).

P

PRINCE MISHRA

Contributor-Level 7

Answered 2 months ago

IISER Berhampur cutoff 2025 for the BS + MS course across multiple specialisations stood at 3299 during the Round 1 cutoff for the students belonging to the General AI quota. So, considering the first-round cutoff rank, candidates must target to secure a rank up to 3299 and lower to improve their ch

...Read more

R

Rashmi Sinha

Contributor-Level 10

Answered 2 months ago

IISER Mohali cutoff 2025 has been released for different categories of students under the AI quota. For the General category, the cutoff rank for BS + MS admission across multiple specialisations was 1778. To view the category-wise ranks, refer to the table below:

CategoryBS + MS
General1778
OBC1358
SC520
ST263
EWS480
PWD50112

R

Rashmi Sinha

Contributor-Level 10

10 Institutes accepting IISER Entrance Exam

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