IISER Aptitude Test : Exam Date, Registration, Eligibility, Syllabus, Results
IISER Aptitude Test 2025- The IISER Aptitude Test 2025 was held on May 25, 2025, by Indian Institutes of Science Education and Research for getting admission into undergraduate programs, i.e. BS Program exclusively offered by IIISER Bhopal, and BS-MS Dual degree program offered by other IISERs. IISER Bhopal is the only IISER that offers both BS Programs and BS-MS Dual degree. The results for the exam were declared on 24 June 2025. The registration process for the IISER Aptitude Test 2025 began on March 10, 2025, and ended on April 15, 2025. The registration process for the IISER Aptitude Test 2025 was entirely online and available on the official website of IISER.
Candidates were required to fill in the educational, personal, and category details, upload documents, and pay the registration fee. The Registration Fee for IAT 2025 was kept fixed at INR 2000 for candidates from the general/OBC/EWS/OBC-NCL category, INR 1000 for SC/ST/Kashmiri Pandits and Migrants/Kashmiri Hindu Families/PWD, and INR 12000 for Foreign candidates.
To be eligible for IAT 2025, candidates of the general/OBC/EWS category should have passed their Class XIIth exams with an aggregate of 60%, while candidates from the SC/ST/PWD category should have an aggregate of 55%. Candidates who passed out from the Jammu and Kashmir board in their Class XII are eligible. For Foreign Nationals, they should have an equivalence certificate from the Association of Indian Universities. The exam consists of 60 questions that cover 240 marks, +4 for each correct answer, -1 for incorrect answers, and zero marks for unattempted answers.
The results for the IISER exam were released on 24 June 2025, and once the results were out, IISER began with its counselling rounds, where the process of seat allocation and choice filling commenced. Candidates are advised to visit the official website of IISER for regular updates.
IISER Aptitude Test 2025 is conducted by the Indian Institutes of Science Education and Research. It is a national-level entrance test conducted to get admission into undergraduate programs of the BS-MS dual degree program in IISERs, and the BS degree program offered by IISER Bhopal. The score obtained by candidates is valid for all 7 IISERs across the country for the BS-MS dual degree course, but for BS program candidates, they can only take admission into IISER Bhopal, as no other IISER offers this course. The IISER Aptitude test is an online computer-based test that is held once a year. This year’s entrance test was held on May 25, 2025. Candidates are allowed to appear for a maximum of 3 times in consecutive years. This means that if a candidate has appeared for the test in 2025, they can appear for the test again in 2026 and 2027. There is, however, no age limit to appear for the test. The results for IAT 2025 were released on 24 June 2025.
The registration fee for this year’s IAT 2025 was INR 2000 for candidates from the general/OBC/EWS/OBC-NCL category, INR 1000 for SC/ST/Kashmiri Pandits and Migrants/Kashmiri Hindu Families/PWD, and INR 12000 for Foreign candidates. The syllabus of IAT 2025 included sections from Biology, Mathematics, Chemistry and Physics. Topics like Diversity in the living world, Atomic Structure, Organic Chemistry, and Algebra are covered in the exam.
IISER Aptitude Test 2025 is a national-level entrance exam conducted by the Indian Institutes of Science Education and Research. It is a computer-based online test held at designated test centres pan-India. The test is available in two languages, i.e. English and Hindi. Candidates appearing for IAT 2025 can get admission into undergraduate courses such as BS-MS Dual degree program from IISERs across India, and BS degree, particularly from IISER Bhopal.
Important Dates for IISER Aptitude Test 2025
IISER Aptitude Test 2025 Eligibility Criteria
To be eligible to appear in IAT 2025, candidates must have passed class XIIth exams with any three of the following subjects: Physics, Chemistry, Biology or Mathematics with an aggregate marks of 55% and 60% based on the category they belong to. Candidates passed from the Jammu & Kashmir Board are also eligible to apply.
Detailed information on the eligibility criteria of the IISER Aptitude test 2025 is given below:
1. Qualification:
55% aggregate marks in Class XIIth with science stream for candidates of SC/ST/PWD category.
60% aggregate marks in Class XIIth with science stream for candidates of General/OBC/OBC-NOL category.
Foreign Nationals must have an equivalent certificate from the Association of Indian Universities.
Candidates who appeared in Class XIIth from the Jammu & Kashmir board by December 2022 are eligible to apply.
2. Age Limit: There is no upper age limit for appearing in the IISER Aptitude Test 2025.
3. Nationality: Indian Nationals, Overseas Citizens of India (OCI)/ PIO, and Foreign Nationals are eligible to apply.
4. Number of Attempts: There is no limit on the number of attempts a candidate can make in the IISER Aptitude Test 2025.
The application process for IAT 2025 started on March 10, 2025, and ended on April 15, 2025. The form was released on the official website of IISER, and candidates were required to fill it out online by visiting the website. Candidates were required to fill in their details and academic qualifications. The application fee for the application form was INR 2000 for candidates of the General/OBC-NCL/KM/PWD category, INR 1000 for SC/ST category, and foreign nationals, it was INR 12000. The modes of accepted payments were Debit Card/Credit Card/Net Banking, and UPI. There were some basic documents required to be submitted during the submission process, and they were a valid ID proof, a scanned passport-size photograph, a scanned signature, a class XIIth marksheet, and a PWD/SC/ST certificate (if applicable).
IISER Aptitude Test 2025 Exam Pattern and Marking Scheme
The IAT 2025 consisted of a total of 60 questions. Each question carried a weightage of 4 marks. For every right answer, +4 marks were awarded, a deduction of -1 mark was made for every wrong answer, and no marks were awarded for an unattempted answer. The duration of the test is 3 hours, and it is conducted in a single shift.
IISER Aptitude Test 2025 Syllabus
The syllabus for the IISER Aptitude Test 2025 covers various topics from sections of Biology, Chemistry, Physics, and Mathematics. Candidates should hold on to these subjects in order to succeed in the test and make the merit list. A topic-wise detailed syllabus is reflected in the table below:
The admit card for the IISER Aptitude Test 2025 was released on May 15, 2025. Candidates could access and download the admit cards from the official website of IISER. The admit card of a candidate has important information on it, like the candidate's name, father’s name, exam centre, exam city, roll number, and registration ID. Entries were allowed in the exam centre on the day of the test to candidates having a hard copy of the admit card along with a valid ID proof.
IISER Aptitude Test Answer Key 2025
The provisional answer key for the ITA Exam 2025 has already been released by IISER on May 25, 2025. The official answer key of IAT 2025 is an official document released by IISER (Indian Institute of Science Education and Research) that contains the correct answers to the questions asked in the IAT exam 2025. The provisional answer key was available to download for candidates at the official website of IISER.
The ITA answer key helps candidates get an estimated score for the exam before the release of official results. Initially, IISER has released a provisional answer key, which permits candidates to raise any objections online by paying a processing fee of INR 100. The Application portal for raising objections was opened from May 29 to June 1, 2025.
IISER Aptitude Test Result 2025
IISER released the results for IAT on 24 June 2025. The results were released on the official website of IISER, and candidates can visit the IISER’s website to download the results. For regular updates regarding the dates of results, candidates are advised to check the official website of IISER regularly.
IISER Aptitude Test Cutoff 2025
The expected cutoff marks based on percentile are 98+ for the general category, 96+ for the EWS category, 95+ for the OBC-NCL category, 75+ for the SC category, 65+ for the ST category, and 55+ for the PWD category. The cut-off list is determined by the number of marks obtained by the candidates who are required to take admission into a particular IISER.
Frequently Asked Questions
The IAT 2025 syllabus is based on the Class 11 and 12 NCERT curriculum for Physics, Chemistry, Mathematics, and Biology.
Candidates must have completed or be appearing for Class 12 (or equivalent) in 2024 or 2025 with science subjects like Physics, Chemistry, Mathematics, and/or Biology.
The IAT 2025 consists of multiple-choice questions from four subjects: Physics, Chemistry, Mathematics, and Biology. Each subject typically has 15 questions, and the total duration of the exam is 3 hours.
Yes, candidates must attempt questions from all four subjects: Physics, Chemistry, Mathematics, and Biology.
Focus on NCERT textbooks for Classes 11 and 12, practice previous years’ question papers, and take mock tests.