IISER 2026 Question Paper Analysis : IAT Answer Key Released @iiseradmission.in
Indian Institutes of Science Education and Research Entrance Exam 2026 ( IISER Entrance Exam )
IISER Aptitude Test 2026 Hall Ticket
24 May '26 - 7 Jun '26
The IISER Aptitude Test (IAT) 2026 will be held on June 7, 2026. Students appearing for the IISER entrance exam can check the question paper analysis after the end of the exam. IISER exam analysis, memory-based questions, and high-weightage topics will be updated here after the exam is over.
IISER question paper analysis
IISER 2026 question paper analysis will be available online after the exam is over. The paper analysis will be based on students' reactions. IISER exam analysis 2026 will help to understand the exam difficulty level, high-weightage topics, distribution of marks and more. Students will also get to know the expected IISER cutoff 2026. IISER Berhampur will conduct IISER entrance exam 2026 on June 7, 2026.
Many coaching institutes shall prepare the memory-based questions of IISER 2026. Students can use the IISER question paper with the answer key to check their answers and calculate probable scores. Check the page for IISER 2026 question paper analysis.
- IISER 2026 Expected Cut Off
- IISER 2026 Question Paper Analysis
- IISER Entrance Exam 2026 Exam Pattern
- IISER 2026 Question Paper
- IISER 2026 Answer Key
IISER 2026 Expected Cut Off
The exam will be conducted for 240 marks. Students will have to score 200+ marks for the IISER rank between 1 and 80. Here, we have provided the expected IISER cutoff 2026.
| IISER 2026 Score (Out of 240) | Expected IISER 2026 Rank |
|---|---|
| 200 and above | Rank 1 to 80 |
| 200-160 | Rank 81- 200 |
| 160- 110 | Rank 201 to 800 |
| 110-95 | Rank 800 to 1500 |
| 95-75 | Rank 1500- 2000 |
| < 60 | Above 2000 |
Also Read: IISER 2026 Marks vs Rank: Check Cut off and Opening- Closing Ranks
Commonly asked questions
The IISER Entrance Exam 2026 pattern is expected to remains same as last year. IAT consists of 60 questions, 15 questions each from Biology, Chemistry Mathematics, and Physics. There will be four answer options. Total time for answering the test is 180 minutes. Questions are multiple choice type with only one correct answer. The mode of the exam is computer-based.
Indian Institutes of Science Education and Research (IISER) will release the IISER Aptitude Test (IAT) 2026 Student Response Sheet in the second week of June 2026. Candidates can visit the official website of IISER and, after logging in with their credentials, can finally view their IAT 2026 Response Sheet. Candidates can finally tally up their marks scored in the IISER Aptitude Test.
The IISER Entrance Exam questions are objective type. These are multiple-choice questions with four options. The mode of the exam is computer-based. Test-takers have to select one option. Marks per question is four. One mark will be removed for wrong answers.
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 2026 Question Paper Analysis
This section will be updated based on students' reactions after the exam is over. Here, exam analysis, doable questions, most asked topics and marks distributions will be provided. Till then students can check the previous year paper analysis of IISER.
IISER 2025 Question Paper and Answer Key
The exam officials have released the IAT answer key on the official website. Candidates can also check the question paper and answer key from the link. Candidates must note that option A of the released questions paper is the correct answer in the PDF.
Download IAT Question Paper and Answer Key Here:Download Now
Based on the IAT 2025 student reactions and questions paper analysis, here is the analysis of the exam difficulty level and good attempts of the sections asked in the examination.
| 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 |
IAT 2025 Exam Analysis
Students who had 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 standard 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 the IISER Entrance Exam 2025 was found to be moderate. It was also found that many questions were indirectly repeated from the previous year questions on the subjects of biology and mathematics. In the physics sections, the maximum number of questions was asked from theory-based type instead of numerical-based questions.
Some candidates who had appeared in the JEE exam found the exam difficulty level the same as the JEE exam.
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IISER Entrance Exam 2026 Exam Pattern
The IISER Entrance Exam Marking Scheme is as follows:
| Subject |
No. of Questions |
Marks |
|---|---|---|
| Physics |
15 |
60 |
| Chemistry |
15 |
60 |
| Biology |
15 |
60 |
| Mathematics |
15 |
60 |
| Total |
60 |
240 |
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.
IISER 2026 Question Paper
Various coaching institutes shall release the IISER question paper based on memory online. The question paper will be available along with the solutions. Students can use the IISER question paper with keys to cross-check their responses and calculate probable scores. IISER Berhampur will release the IISER question paper 2026 online. Aspirants can use IAT PYQs for exam preparation and to know the paper difficulty levels.
IISER 2026 Answer Key
IISER Berhampur will release the IISER answer key 2026 online on June 7, 2026. The answer key will be available in PDF format. Students can use the IAT answer key to cross-check their responses using the response sheet. They can calculate their scores using the IISER exam pattern. Students can also challenge the answer key if their is any issues in the options. This is a chargeable process.
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Student Forum
Anything you would want to ask experts?Answered a week ago
Students can create an IISER login id and password during registration. The details required to register for IISER are Name, Date of birth, gender, citizenship status, mobile number, and email address.
V
Contributor-Level 10
Answered a week ago
No, IISER registration was over on April 13, 2026. Students were able to register for IAT 2026 from March 5 to April 13.
V
Contributor-Level 10
Answered a week ago
IAT user id is (application number / registration number). It is created during the IISER registration process. After the registration is over, user id and password are sent to the registered email address and mobile number.
V
Contributor-Level 10
Answered 2 months ago
IISER answer key will be released on June 7, 2026. Candidates can download the answer key online. The answer key challenge window will open on June 9, 2026.
V
Contributor-Level 10
Answered 2 months ago
The IISER exam date is June 7, 2026. The exam will commence at 9 AM and continue till 12 PM. It is a computer-based test.
V
Contributor-Level 10
Answered 2 months ago
IISER score 200 or above is a good marks. It can help to get admission to IISER Pune and IISc Bangalore. Candidates must have a good conceptual knowledge, give priority to all four subjects. Prepare for the exam according to the exam syllabus and take mock test to score above 200.
V
Contributor-Level 10
Answered 2 months ago
Based on previous year analysis, IAT exam is moderately difficult. It requires strong conceptual knowledge. Students who have prepared properly for exam can easily score good marks.
V
Contributor-Level 10
Answered 2 months ago
It is quite difficult for the GEN / OBC category to get admission to IISER with 50 marks. Even the reserved category students have less chance in the later counelling round for admission. To secure admission, students must score above 150 marks.
V
Contributor-Level 10
Answered 2 months ago
IISER exam is considered of moderate difficulty level. Majority of students finds Physics, and Mathematics challenging. PCM students may find biology tough while PCB students might find Mathematics tough. However, the difficulty level of IISER compared to JEE Main and Advanced is moderate to easy.
V
Contributor-Level 10
Answered 2 months ago
The last date to apply for IISER 2026 was April 13, 2026. IAT application form was available on the website, iiseradmission.in.
V
Contributor-Level 10