IISER Exam Analysis 2025: Check IAT Paper Review & Student Reaction

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.

IISER 2025 Exam Difficulty Level

Candidates can check out the IISER 2025 exam difficulty level from here:

Check out the overall exam difficulty level of IAT 2025 based on Student Reactions:

Check out the number of good attempts for each subject, the time spent on each section and the safe score details from below:

The following table brings the important information and highlights of the IISER Aptitude Test 2025.

The IISER Entrance Exam Marking Scheme is as follows:

Candidates can check the IAT 2024 exam analysis and student reactions from here:

Sakhshi: The exam difficulty level was easier than expected. Questions from the Chemistry subject were the easiest. Biology was of moderate level. Maths and Physics subjects were also of moderate level to solve. Nothing apart from the mentioned syllabus was asked. In physics, topics from current were asked more. From Mathematics topics like continuity, diffrentiability and differential equations had more weightage. The expected cut-off will be around 150+.

Gaurav: Overall exam difficulty level was easy to moderate. Questions from Physics and Mathematics were on the easy side. Inorganic chemistry questions were a bit tricky and the level was above moderate. Chemistry subjects had questions from coordinate and compound chemistry. Physics and Maths were equally distributed. 

Dhruvi: Overall exam difficulty level was moderate. Biology was the easiest. Questions from physics were a bit difficult and tricky to solve. the expected cut-off as compared to previous years will be high because of the easy questions asked in the examination. 

Umang: The IAT 2024 exam difficulty level was moderate and the questions were approach-based.There were no technical glitches in the examination. Questions from all the subjects were on the easy side. the IAT 2024 cut-off will be high this year. Some candidates who had appeared in the JEE exam found the exam difficulty level the same as the JEE exam.

IAT 2024 question paper and answer key were released on June 9, 2024 on the official website. For the last day of IAT 2024 preparation, candidates can go through the IISER 2024 question paper weightage from here:

IAT 2024 Student Reactions Video

IAT 2023 Exam was held on June 17, 2023. IISER Aptitude Test (IAT) will be conducted as a computer based test in centres across India. IISER 2023 Analyis will be updated soon after the conduct of the examination. IAT will consist of 60 questions, 15 questions each from Biology, Chemistry, Mathematics, and Physics. Total time for answering the test will be 180 minutes. Questions will be of multiple choice type with only one correct answer. Students have opted for PCM in their class 12 std, found the biology section comparatively moderate to difficult and the students who had opted PCB in their class 12 found the Mathematics portion to be moderately difficult. for the common subjects for both the stream students which are Chemistry and Physics, the exam difficulty level was moderately easy. The overall difficulty level of IISER Entrance Exam 2023 was found to be moderate.

It was also found that many questions were indirectly repeated from the previous year questions on the subjects biology and mathematics. In the physics sections questions were maximum asked from theory-based type instead of numerical-based questions. Candidates can expect the IISER 2023 Cut off comparatively higher than previous year's cut off. The total marks obtained by a candidate out of 240 will be considered for preparing the Rank List. Not every candidate appearing in IAT 2023 will be awarded a rank. Rank cut-off will be announced at an appropriate time. Further, getting a rank does not guarantee offer/admission to an IISER.

The IISER Paper Analysis 2023 is given below for the reference of the candidates.

Here is the video given below which mentions about the IISER Aptitude Test 2023 examination difficulty level, subject domains from which maximum questions were asked and also about the subject which was comparatively tougher than other science subjects. This Shiksha Video also tells about the priority of IISER Applicants choosing IISER institutes.

IISER 2022 Entrance Exam was held on July 3, 2022, and had questions from Mathematics, Physics, Chemistry, and Biology. It was held as a computer-based test (CBT). The IISER Paper Analysis 2022 is given below for the reference of the candidates.