IISER 2025 counselling registration ended on July 3, 2025. Based on the registrations and seat availability, the IISER 2025 first seat allotment list was out on July 21, 2025. Check out the IAT 2025 counselling details, opening and closing ranks, SAF and other details here.
IISER 2025 Admission Test Process
IISER 2025 Results was out on the official website on June 24, 2025, and the allocation of AIR and category ranks was also allocated. The exam conducting authority conducted the counselling rounds for all the qualified candidates till July 3, 2025, by 5:00 pm. The registration process for the IISER Counselling process started on June 26, 2025.
Also Read: IISER 2025 Marks vs Rank
NOTE: Candidates must note that IISER 2025 counselling will only provide admissions to the IISER institutes. Those who are aiming for IISc Bangalore and IIT Madras need to fill out the separate counselling registration form by visiting each institute's website.
- IISER 2025 Counselling
- IISER 2025 Cut Off
- IISER Exam 2025 Result
- IISER Exam 2025 Final Answer Key
- IISER Exam 2025: Good Score
- IISER 2025 Answer Key Objection Window
- IAT 2025 Student Response Sheet
- IAT 2025 Exam Analysis
- IISER 2025 Exam Highlights
- IISER Entrance Exam 2025 Admission Process
- What is IISER Aptitude Test?
- Latest Changes Introduced in IAT 2025 Exam
- IISER Entrance Exam 2025 Dates
- Academic Programmes Offered by IISER
- IISER Entrance Exam 2024: Participating Institutes
IISER 2025 Counselling
There are a total of four rounds that are conducted for all the selected candidates during the IAT admission process. The IAT admission list is released on the official website, and the list is based on the previous rounds and the availability of remaining and vacant seats. Students need to visit the official website to check out the seat allotment list for all counselling rounds.
The counselling process is done in an online mode, and therefore, selected candidates do not have to report to the IISER campus in person. However, students need to check whether they have received any offer of a seat by IISERs (The IISER preferences that candidates had earlier frozen).
Also Read: IISER 2026
IISER 2025 Cut Off
Following the previous year's trends, IISER Exam Cut-off 2025 marks are not released by the exam officials directly on the official website or in the test takers' IISER 2024 rank card. The exam officials release the IAT category and participating institutes-wise closing ranks after the IISER 2025 counselling registration is done by the test takers.
Based on the details collected by the students, candidates can check out he expected IISER cut off from the previous year:
| IISER Expected Cut Off | |
|---|---|
| IISc Banglore |
190-210 |
| IIT Madras |
185-205 |
| IISER Pune |
175-200 |
| IISER Bhopal |
160-185 |
| IISER Kolkata |
155-160 |
| IISER Mohali |
132-140 |
| IISER Tirupati |
110-120 |
| IISER Berhampur |
110-95 |
IISER Exam 2025 Result
Candidates was able to download their IAT 2025 result by visiting the official website and logging in to their registered account with the help of login credentials ie, username and password. The IISER 2025 Rankcard will help the candidates to enrol in the counselling rounds conducted by various IISER participating institutions. Only the meritorious candidates will get the opportunity to sit in the IISER 2025 counselling process.
Also Read: Low Score in IISER 2025?
IISER Exam 2025 Final Answer Key
The IISER 2025 Final Answer Key was released on June 24, 2025, on the official website. Based on the objections received, the exam officials have reviewed the challenges with the help of an expert committee. If any objections are found valid, corrections are made, and the IISER Final Answer Key 2025 is updated accordingly. The IISER 2025 scorecard will be compiled based on the final answer key.
Earlier, the IISER 2025 provisional answer key was released on May 25, 2025, after the successful conduct of the examination.
Also Read: IAT 2025 Safe Score
IISER Exam 2025: Good Score
The following are the good scores to get into the top institutes (IISERs). Candidates must note that the scores below are for UR candidates, and they can check the category-wise good scores in the article below:
- IISc Bangalore- 200
- IIT Madras- 185
- IISER Pune- 170
- IISER Bhopal- 140
- IISER Kolkata- 160
- IISER Mohali- 140
- IISER Tirupati- 120
- IISER Berhampur- 110
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IISER 2025 Answer Key Objection Window
| Round-wise Withdrawal dates (Without Penalty) | Final Withdrawal Date | |
| Round - 1 | 09 July 2024; 4 PM | 26 July 2024: 4 PM |
| Round - 2 | 15 July 2024; 4 PM | 26 July 2024: 4 PM |
| Round - 3 | 20 July 2023; 4 PM | 26 July 2023: 4 PM |
| Round - 4 | 26 July 2023; 4 PM | 26 July 2023: 4 PM |
Please Note
- The candidate can withdraw his/her seat by selecting the option “WITHDRAW SEAT” in the application portal. No other form/method of withdrawal is accepted.
- Requests for extension of last date for withdrawal will NOT be entertained.
- For withdrawals before round-wise deadline, entire SAF will be refunded in full.
- For withdrawals after round-wise deadline but before final withdrawal date INR 10,000.00 (INR. 5,000.00 for SC/ST) will be deducted. Rest of the SAF will be refunded.
- For withdrawals after the final withdrawal date, withdrawal and refund rules of admitting IISER will apply.
Candidates who are applying for the IISER 2024 counselling process need to remember the following points before applying:
Note -1:
a) To be considered for counselling, filling up the IISER Preference Form is mandatory.
b) Please upload your Class XII marksheet or Class XII improvement marksheet and Caste certificate (in the Applicant Details section) if applicable and if you have not uploaded the same while filling up the Application Form.
Note-2:
a) All candidates with a score of 1 and above are awarded with an Overall Rank. Obtaining a rank does not ensure admission to IISERs. Only those candidates who submit the IISER Preference Form will be considered for admission to IISERs.
b) Category rank, if applicable and as reflected on the scorecard, is provisional subject to the verification of documents.
Exam officials started the IISER 2025 answer key objection portal from May 29, 2025, till June 01, 202,5 for the candidates who are not satisfied with the released provisional answer key. Only paid challenges made during the stipulated time through the key challenge link will be considered. Challenges without justification/evidence and those filed on any other medium other than the prescribed link will not be considered. The IISER decision on the challenges shall be final, and no further communication will be entertained. The subject experts will examine all the challenges received, and then a final answer key will be displayed and declared.
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IAT 2025 Student Response Sheet
IISER exam student response sheet has been released on the official website. Test takers will be able to download their IISER 2025 response sheet by visiting the official website and logging in to their registered account. The downloaded IISER student response sheet 2025 in PDF format will help the candidates match the answers with the IISER answer key 2025.
| Direct Link to Check IISER Response Sheet 2025: https://cdn.digialm.com/EForms/configuredHtml/2245/92721/Index.html |
IAT 2025 Exam Analysis
Based on the student reactions, the IISER 2025 overall exam difficulty level was moderate. Candidates who are from the PCB stream found Biology very easy and took more time for Mathematics questions. Equal distribution of subjects and topics was found in the exam. Both the practical and theory-based questions were asked by the exam officials. Many of the students found the physics section to be the most difficult section to attend. Questions in physics were mostly application-based, and the electricity topic had the highest weightage of questions.
Questions in biology were technical and practical-based; no repeated questions were asked in this section.
Also Read: IISER 2024 Exam Analysis
Candidates can check out the IISER entrance exam 2025 student reactions from here:
IISER 2025 Exam Highlights
The following table provides the tentative important information and highlights of the IISER Aptitude Test 2025.
| Particulars |
Details |
|---|---|
| Exam Name |
IISER Aptitude Test |
| Conducting Body |
Indian Institute of Science Education and Research |
| Exam Level |
Undergraduate |
| Exam Frequency |
Once a year |
| Exam Mode |
Online/Computer-based Test (CBT) |
| Total Registrations |
Two lakh (approximate number) |
| Courses Offered through IISER Aptitude Test |
BS-MS dual degree programme/ BS (IISER Bhopal) degree |
| Application Fee |
Gen/OBC/OBC-NCL/EWS - INR 2,000 SC/ST/KM/PwD - INR 1,000 |
| Exam Duration |
3 Hours |
| Exam Medium |
English and Hindi |
| Total Marks of IISER |
240 Marks |
| Total Questions |
60 |
| Marking Scheme |
+4 for each correct answer -1 for each wrong answer |
| Colleges Accepting IISER Aptitude Test Scores |
All IISER campuses in India |
| Official Website |
http://www.iiseradmission.in/ |
| Contact Details |
Phone: 020 25908222 (2 to 5 PM, Monday to Friday) Email: ask-jac2022@acads.iiserpune.ac.in |
Only the meritorious candidates IAT 2025 Test will get the opportunity to sit in the IISER 2025 counselling process. Selected candidates in the IISER 2025 will then have to upload the required documents to confirm their seats between June 26 to July 02, 2025, tentatively
Documents to be uploaded:
- Class 12 marksheet
- Caste Certificate
The IISER 2025 counseling process for the 2025-2026 academic session is entirely online. Candidates who took the IISER 2025 exam and wish to enroll in any of the participating IISER institutes, including IISERs, IISc Bangalore, and IIT Madras, must participate in the counseling process.
The IISER 2025 counseling process involves several steps:
- Filling out the online registration and counseling form
- Paying the registration fee (if applicable)
- Uploading required documents
- Seat allotment
- Seat acceptance fee payment (if applicable)
- And potentially other steps
IISER Entrance Exam 2025 Admission Process
IAT 2025 admission process is long and comprehensive and consists of many events like registration, application fee, application correction window, admit card, exam day, answer key, answer key challenge, result, counselling, and seat allocation process. Candidates can find the detailed IISER 2025 events from here:
IISER 2025 Eligibility Criteria
Before filling out the IAT application form, candidates are advised to check the IISER 2025 eligibility criteria that one needs to satisfy to appear for the examination:
- An applicant must be an Indian citizen or PIO or an OCI to apply for the IISER aptitude test 2025. Candidates who are NOT Indian nationals or PIO or OCI can apply for admission only through the JEE (Advanced) channel.
- Candidates should have passed the Class 12 (or equivalent) exam with the science stream in 2024 or 2025 from any board recognised by the Council of Boards of School Education in India, CBSE.
- Candidates must have taken at least three subjects among Biology, Chemistry, Mathematics and Physics during their Class 12 (or equivalent) exam.
- Candidates belonging to SC/ST/PwD should have scored a minimum of 55 per cent marks in aggregate or equivalent grade in their Class 12 (or equivalent) exam. Candidates belonging to other categories should have scored a minimum of 60 per cent marks in aggregate or equivalent grade in their Class 12 (or equivalent) exam.
IISER Entrance Exam Application Form
IISER application form started on March 10, 2025. Interested applicants will be able to fill out the IAT registration form online by visiting the official website. Candidates will be required to register first to fill out the application form. After receiving the IISER registration credentials via email and SMS, they have to log in again and fill up the IISER application form with the rest of the personal and academic details, exam city preference, course preference and document upload. After all details on the IISER application form are filled out, candidates need to pay the application fee. Candidates could make the payment of the IISER application fee online (through credit/ debit card/net banking).
Candidates can check the complete process for filling the IAT 2025 application form here: How to Fill IISER Application form 2024: Check Steps, Fee Details and link @iiseradmission.in
IISER Entrance Exam 2024 Application Fee
- INR 2,000/- for candidates applying under the General, EWS, and OBC-NCL categories.
- INR 1,000/- for candidates applying under persons with disabilities, persons registered as Kashmiri migrants and SC/ST category.
- USD 100 for foreign nationals.
- The application fee is non-refundable
For filling out the IISER 2025 application form, candidates can refer to the video tutorial mentioned below:
IAT 2025 Exam Pattern
IISER Entrance Exam 2025 exam pattern depicts the types of questions that will be asked in the IAT 2025 examination. The exam officials will test the domain knowledge of the candidates in the form of multiple-choice questions (MCQs) for the duration of three hours. Candidates will be awarded +4 marks for correct answers marked by the candidates in the examination. For every wrong answer marked -1 marks will be deducted by the exam officials. Candidates can check the IAT 2025 exam pattern from here:
| Subject |
No. of Questions |
Marks |
|---|---|---|
| Physics |
15 |
60 |
| Chemistry |
15 |
60 |
| Biology |
15 |
60 |
| Mathematics |
15 |
60 |
| Total |
60 |
240 |
IISER Entrance Exam 2025 Syllabus
The IISER 2025 syllabus will be specified by the exam officials when they release the official IAT 2025 notification. In the IAT 2025 examination, the exam officials will test the domain knowledge of candidate from topics present in the syllabus of Class 11 and 12 books. IISER 2024 exam question paper carried questions from the sections- Biology, Chemistry, Physics and Mathematics. For better preparation of the IISER exam, the candidate must review the complete IISER 2024 syllabus as the questions asked will test the candidate's analytic ability.
Biology Syllabus
| Diversity in the living world. | Human physiology. | Reproduction |
| Cell structure and function | Genetics and Evolution | Ecology and environment |
| Plant and Animal physiology. | Biology and human welfare | Biotechnology and its applications |
Chemistry Syllabus
| Structure of the Atom | Thermodynamics and Equillibrium | Redox Reactions |
| Classification of Elements and Periodicity in Properties | Hydrogen | s, p, d, f block elements |
| Chemical Bonding and Molecular Structure | Organic Chemistry – Some Basic Principles and Techniques | Hydrocarbons |
| Environmental Chemistry | Alcohols, phenols and ethers, Aldehydes, ketones and carboxylic acids | General principles and processes of isolation of elements |
| Electrochemistry and Chemical Kinetics | Haloalkanes and haloarenes | Coordination Compounds |
Mathematics Syllabus
| Sets, Relations and Functions and Trigonometric Functions | Inverse Trigonometric Functions and Principles of Mathematical Induction | Complex Numbers and Quadratic Equations and Linear Inequalities |
| Permutations and Combinations, Binomial Theorem and Sequences and Series | Straight lines, Conic Sections and Three Dimensional Geometry | Limits and Derivatives, Mathematical Reasoning |
| Statistics, Probability, Matrices and Determinants | Continuity and Differentiability, Application of Derivatives | Integrals and Applications of Integrals |
| Differential Equations |
Vectors | Linear Programming |
Physics Syllabus
| Physical World and Measurement, Kinematics, Laws of Motion | Work, Energy and Power, Motion of Systems of Particles and Rigid body | Gravitation, Properties of bulk matter, Thermodynamics |
| Behavior of perfect gas and kinetic energy, Oscillations, Waves | Electrostatics, Current Electricity | Magnetic effect of current and magnetism, Electromagnetic Induction, Alternating current |
| Electromagnetic Waves, Optics, Dual Nature of Radiation and Matter | Atoms and Nuclei |
Electronic devices, Communication Systems |
Learn more about magnetic forces
IISER Entrance Exam 2025 Preparation
IAT 2025 is a highly competitive 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. Here are a few step-wise IISER 2025 preparation tips that you can apply when you are short on time and need to study straight away:
- Gather all the relevant information. This includes the exam dates, the number of papers, the duration of each paper, and the syllabus for each paper.
- List all the papers you need to take.
- Estimate the amount of time you need to study for each paper.
- Allocate time for each paper in your timetable.
- Be realistic about how much you can study in a day.
- Schedule your study sessions around your other commitments.
- Stick to your timetable as much as possible.
- To identify areas where you need to improve: By reviewing your mock test results, you can identify areas where you need to improve your knowledge or understanding. This can help you focus your studies on the most important topics, maximizing your chances of success on the actual exam.
For better preparation, candidates can go through the expected IISER 2025 question paper weightage from here:
| Subject | Difficulty Level | Good Attempt |
|---|---|---|
| Biology | Easy | 12-13 Questions |
| Physics | Moderate | 8-10 Questions |
| Chemistry | Easy to Moderate | 10-12 Questions |
| Mathematics | Moderate | 9-11 Questions |
IISER Entrance Exam Previous Year Question Paper
Referring to the IISER entrance exam previous year's question paper will help the aspirants in knowing the format of the exam, question difficulty, types of questions asked and question trends. By analyzing these papers, you can gain valuable insights to improve your exam preparation.
The IAT 2024 Question paper for the academic session 2024-2025 is mentioned below.
| Question Paper Medium | IISER 2024 Question Paper PDF Download |
|---|---|
| English | Download Now |
| Hindi | Available Soon |
Also Read: IISER Entrance Exam Question Papers, Sample Papers PDF: Download Free
IISER Entrance Exam 2025 Admit Card
The IAT 2025 admit card will be released in the first week of June 2025, tentatively. Candidates will be able to download the IISER entrance exam 2025 admit card by visiting the official website and logging in to their registered account with the help of login credentials ie., username and password. The IAT 2025 admit card is a mandatory document that must be carried to the exam centre, and preserved till the admission process is complete. IISER Aptitude Test 2025 admit card will carry information like IAT 2025 Shift Timings, candidate's name, exam centre details and many more.
Steps to Download IISER Entrance Exam 2025 Admit Card
The candidate will have to follow the below-mentioned steps on how to download the IISER Entrance Exam admit card which is as follows:
Step 1: The candidate will have to first visit the official website of IISER Admissions
Step 2: Once the candidate is on the homepage of the official website of IISER Admissions, the candidate will have to search for the tab ‘IISER Admit Card’.
Step 3: Click on the link and the candidate will be directed to a new page on the website.
Step 4: Enter the credentials as required such as Login ID and Password.
Step 5: The candidate’s admit card will be viewed. Check the details on the IISER Entrance Exam admit card carefully.
Step 6: Download and take out at least two print outs of the admit card. One can be kept as a backup as it will be required for future purposes.
What is IISER Aptitude Test?
Indian Institutes of Science Education and Research (IISERs) admit students to their five-year BS-MS dual/ 4 year BS degree programs based on the IISER Aptitude Test (IAT). The exam is being held annually which determines admission to IISER campuses in Berhampur, Bhopal, Kolkata, Mohali, Pune, Thiruvananthapuram, and Tirupati. Students who have completed Class 12 with a Science background are eligible to apply for the IISER Aptitude Test. Based on the marks scored in the IAT 2025 exam, candidates, based on their preferences, get admission to the programmes offered by various IISER 2025 participating universities.
Latest Changes Introduced in IAT 2025 Exam
the exam officials for the academic session 2025-2026, has introduced some significant changes for the interested applicants, like the addition of some new courses to give them holistic opportunities. IISER Entrance Exam 2025 application process dates have been revised by the officials.
New Courses Added
- New Programme Launched at IISER Kolkata- 5-year BS-MS dual degree program in Computational and Data Sciences
- New Programme Launched at IISER Tirupati- 4-year BS programme in Economic and Statistical Sciences
- For the academic session 2025-2026 IISER entrance exam 2025 will also provide admissions to BTech course which will be only offered at IISER Bhopal.
Eligibility Criteria Reversed
IISER exam officials has reinstated the IAT 2025 eligibility criteria of last years IISER Aptitude Test 2024 regarding the year of passing Class XII (or equivalent) examination. This decision supersedes the criteria previously mentioned on the IISER Admissions Website, which was released on January 30, 2025. The decision to revert to the eligibility criteria in 2024 was made after carefully considering various competing factors.
Seat Intake Revised
For the academic session 2024-2025, a total of 1933 seats were offered through IISER entrance exam at various IISERs, IISc Banglore and IIT Madras. From this session, two new courses have been added up which increases the overall IISER Entrance Exam 2025 seat intake. Candidates can check out the seat distribution form here:
| B. Tech. / BS Programme | Number of Seats |
|---|---|
| IISER Bhopal (B. Tech.) | 140 |
| IISER Bhopal (BS in Economic Sciences) | 35 |
| IISER Tirupati (BS in Economic and Statistical Sciences) | 50 |
| Total | 2333 |
IISER Entrance Exam 2025 Dates
Candidates can check out the IAT 2025 exam dates from here:
| IISER Entrance Exam 2025 Events | IISER 2025 Dates |
|---|---|
| IISER Entrance Exam 2025 Application Form Start Date | 10-Mar-2025 |
| IISER Entrance Exam 2025 Application Form End Date | 15-Apr-2025 |
| IISER Entrance Exam 2025 Application Form Correction Window | 21-Apr-2025 to 22-Apr-2025 |
| IISER Entrance Exam 2025 Admit Card | 15-May-2025 |
| IISER Entrance Exam Date 2025 | 25-May-2025 |
| IISER Entrance Exam 2025 Answer Key | 25-May-2025 (After the successful conduct of examination) |
Academic Programmes Offered by IISER
IISERs offer admission into courses leading to BS-MS Dual Degree, and BS Degree (only at IISER Bhopal) Programs. Admissions are via the IAT Channel only. KVPY and JEE (Advanced) scorecards are no longer valid for admissions. Programmes offered by the participating IISER institutions are mentioned below:
- Biological Sciences
- Chemical Sciences
- Earth & Climate Sciences/Earth & Environmental Sciences
- Economic Sciences
- Engineering Sciences (Chemical Engineering, Data Science & Engineering, Electrical Engineering & Computer Science)
- Geological Sciences
- Integrated & Interdisciplinary Sciences (Biological Sciences, Chemical Sciences, Mathematical Sciences, Physical Sciences)
- Mathematical Sciences
- Physical Sciences
Note: The Four-year BS program in Engineering Sciences and Economics Sciences is offered only by IISER Bhopal.
IISER Entrance Exam 2024: Participating Institutes
Below is the list of IISERs and their locations in India:
| List of IISERs | Location |
|---|---|
| IISER Berhampur | Odisha |
| IISER Bhopal | Madhya Pradesh |
| IISER Kolkata | West Bengal |
| IISER Mohali | Punjab |
| IISER Pune | Maharashtra |
| IISER Thiruvananthapuram | Kerala |
| IISER Tirupati | Andhra Pradesh |
| IISc Banglore | Karnataka |
| IIT Madras | Tamil Nadu |
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IISER Entrance Exam Notifications
Since the exam officials are yet to announce the IISER 2025 counselling dates and details. However based on the previous year trends, there will be six rounds of IAT 2025 seat allotment process.
Following the previous years trend, IISER has the tendency of releasing multiple round of IAT seat allotment/ closing rank list, depending upon the availability of the seat in the IISER insitutes.