IISER Entrance Exam 2025 Pattern: Check Negative Marking Scheme & Section-wise Paper Pattern Here

Updated on Nov 3, 2025 13:40 IST

IISER Entrance Exam 2025 pattern remains the same as the previous year's IISER Entrance Exam. The exam was conducted in a computer-based test. IAT 2025 applicants' subject knowledge will be tested based on the format of multiple-choice questions (MCQs) in the exam.

IAT 2025 mock test link will be activated soon for the test takers to practice the exam questions in the predefined exam pattern and timings. There will be only 60 MCQs that the exam authority will ask from the mentioned IISER syllabus 2025.

Last year, the marking scheme of the exam was modified. The only change that was made by the exam conducting body is the marks earned for each correct answer. Earlier, the examination was 180 marks, but now the maximum mark of the examination is 240 marks.

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Table of contents

IISER Entrance Exam 2025 Highlights
IISER Entrance Exam 2025 Marking Scheme

IISER Entrance Exam 2025 Highlights

The IISER exam is held once a year in online mode by the exam conducting authority, the Indian Institute of Science Education and Research. There are a total of 240 scores in the IISER Question paper, and the exam language is English. For each correct answer, one will get 4 marks, and for every incorrect answer, one mark will be subtracted. Students must visit the IAT official portal to go through the upcoming events and dates related to the IAT exam.

Commonly asked questions

Q: What will be changes made in the IISER Entrance Exam pattern?

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.

IISER Entrance Exam 2025 Marking Scheme

The IISER Entrance Exam Marking Scheme is mentioned below:

There are a total of four subjects in the IISER exam, and each section has a total of 15 questions, and every section has 60 marks. Students should know that the questions are asked from Physics, Biology, Mathematics, and Chemistry. The IAT question paper is of 240 marks and has 60 questions in total.

Marking scheme: Candidates will be awarded three marks for each correct answer. There will be a negative marking of one mark for each incorrect answer.

Commonly asked questions

Q: What language will the IISER Entrance Exam be conducted in?

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.

Q: What will be the section wise marking scheme of IISER Entrance Exam 2024?

The IISER Entrance Exam Marking Scheme is as follows:

Physics 15 questions will be asked in the examination and 60 marks will be the maximum awarded for all the correct answers.
Mathematics- 15 questions will be asked in the examination and 60 marks will be the maximum awarded for all the correct answers.
Chemistry 15 questions will be asked in the examination and 60 marks will be the maximum awarded for all the correct answers.
Biology 15 questions will be asked in the examination and 60 marks will be the maximum awarded for all the correct answers. Marking scheme: Candidates will be awarded three marks for each correct answer. There will be negative marking of one mark for each incorrect answer.