The IISER Aptitude Test (IAT) 2026 was successfully conducted today, June 7, 2026, for admission to 2,343 seats offered in undergraduate programmes by the participating institutes.
The total number of BS-MS seats is 2,043, while the total number of BS and BTech seats is 300.
SciAstra visited the IAT 2026 exam centres in Pune, Bengaluru, Noida, and New Delhi to interact with test-takers and understand the difficulty level of the exam and the types of questions asked. Based on these interactions, we found that the exam was moderately difficult.
Check out the complete details of the IAT 2026 difficulty level, students' reviews of the exam, and the expected release date of the IAT 2026 answer key.
Also Read:
IAT 2026: Highlights
To sum up the key details related to IAT 2026, we have provided the exam highlights below:
IAT 2026: Highlights | |
Exam | IISER Aptitude Test 2026 (Conducted on June 7, 2026 from 9 AM to 12 PM) |
Duration & Language | 3 hours Languages: Hindi & English |
Number of Questions | 120 multiple choice-based questions |
Marks | Total marks: 480 marks Marking scheme:
|
Participating Institutes |
|
Courses Offered |
|
IAT 2026 Difficulty Level Analysis
As per the preliminary responses received from students, IAT 2026 was moderately difficult overall. Physics was the most difficult section, while Biology was the easiest.
Section-Wise Difficulty Level
Check out the section-wise difficulty level of the exam below:
IAT 2026 Section-Wise Difficulty Level | ||
Subject | Difficulty Level | Student Consensus |
Biology | Easy | Most students found it NCERT-based and scoring. |
Chemistry | Moderate | Some students reported the section as lengthy. |
Physics | Moderate to Tough | Widely considered the most difficult section. |
Mathematics | Moderate | Mixed feedback; easier than JEE level but challenging for PCB students. |
SciAstra's Contribution to IAT 2026 Preparation
SciAstra's focused preparation resources played a significant role in helping students tackle several questions in the IAT 2026 examination. Based on feedback received from candidates after the exam, multiple questions and concepts were found to be closely aligned with the topics covered in SciAstra's revision initiatives, including the Top 50 Important Questions Series and the Maha Revision Marathon.
Mathematics
Students reported that 2–3 Mathematics questions were directly based on concepts covered in SciAstra's Top 50 Important Mathematics Questions. Some of the prominent topics from which questions appeared in the examination included:
Functions
Continuity
Many aspirants who had thoroughly practiced these questions found the Mathematics section more manageable and were able to solve such questions with confidence.
Biology
Biology was considered one of the easiest sections of the paper by a large number of candidates. According to student feedback, several concepts and question patterns had already been discussed during SciAstra's:
Top 50 Important Biology Questions
Maha Revision Marathon Sessions
This familiarity helped students quickly identify key concepts and attempt the section with greater accuracy and confidence.
Chemistry
Students also observed that several Chemistry questions were based on concepts that had been extensively covered during SciAstra's Maha Revision Marathon. Although the questions were not identical to those discussed in the sessions, the underlying concepts and problem-solving approaches were familiar to students who had attended the revision classes.
Impact of SciAstra's Revision Strategy on IAT 2026
The feedback received from candidates highlights the effectiveness of SciAstra's targeted revision strategy. Through its carefully curated Top 50 Question Series, intensive Maha Revision Marathons, and mentor-led guidance, SciAstra helped aspirants strengthen their understanding of high-weightage topics, revise key concepts efficiently, and approach the IAT 2026 examination with greater confidence.
When will the IAT 2026 Answer Key be released?
The IAT 2026 has been successfully conducted today. The exam authority, IISER Berhampur, will release the IAT 2026 Answer Key on June 7, 2026, on the official IISER Admission website, iiseradmission.in.
Following the release of the answer key, the exam authority will make the IAT 2026 Student Response Sheet available on June 9, 2026, on the same website. The response sheet is a document that contains the answers marked by candidates in the IAT 2026 examination. Each candidate will be able to access their individual response sheet separately.
The IAT 2026 answer key objection window will also open on June 9, 2026, at iiseradmission.in. Candidates can challenge any discrepancies in the provisional answer key until June 13, 2026.
Steps to Download the IAT 2026 Answer Key
To download the IAT 2026 answer key, candidates can follow the steps given below:
Visit the official IISER Admissions 2026 website.
On the homepage, locate and click on the "IAT 2026 Provisional Answer Key" link.
The IISER 2026 provisional answer key PDF will open on the screen.
Carefully check the answers provided for all the questions.
Download the PDF and save it for future reference.
Compare your marked responses with the official answers to estimate your probable score in the examination.
