IISER IAT 2026 response sheet has been officially released on 09/06/2026 at iiseradmission.in. The response sheet is your digital record of all answers marked during the Aptitude Test held on 07/06/2026. Students can now download their individual response sheets, verify answers, calculate probable scores, and raise objections against the provisional answer key until 13/06/2026.
The Indian Institute of Science Education and Research (IISER) conducts the IAT as a gateway examination for undergraduate admissions. Your response sheet is essential for self-assessment and for challenging any discrepancies in the answer key. Visit the official portal at https://iiseradmission.in to log in with your application number and password, then download your response sheet in PDF format for future reference.
Note: All information is sourced from the official notification. Students are advised to verify all details from the official website before proceeding.
Overview
| Particulars | Details |
|---|---|
| Examination Name | IISER Aptitude Test (IAT) 2026 |
| Response Sheet Status | Released on 09/06/2026 |
| Official Website | https://iiseradmission.in |
| Exam Date | 07/06/2026 |
| Objection Submission Window | 09/06/2026 to 13/06/2026 (11:59 PM) |
| Final Answer Key Release | Fourth Week of June 2026 |
Key Information
| Particulars | Details |
|---|---|
| Exam Name | IISER Aptitude Test (IAT) 2026 |
| Response Sheet Release Date | 09/06/2026 |
| Exam Conducted On | 07/06/2026 |
| Objection Fee Per Question | ₹100 (Non-refundable) |
| IAT 2026 Result Date | First Week of July 2026 |
| Total Marks in IAT | 240 Marks |
What Is the IISER IAT 2026 Response Sheet?
The IAT 2026 response sheet is the official document issued by IISER containing all answers marked by you during the examination. It functions as your authenticated digital record of exam responses and allows you to cross-verify your performance immediately after the test. This sheet is crucial for comparing your answers against the provisional answer key, calculating your probable score using the official marking scheme, raising objections against disputed answer options, and estimating your likelihood of qualifying for IISER counselling and seat allocation.
The response sheet includes your complete exam details, such as application number, roll number, exam shift timing, subject-wise questions from Physics, Chemistry, and Mathematics or Biology, and the exact option you selected for each question. Having this document in hand empowers you to make informed decisions about challenging answers and understand your performance comprehensively.
Details Available in IISER IAT 2026 Response Sheet
| Information Provided | Description |
|---|---|
| Candidate Name | Full name as registered during application |
| Application Number | Unique registration identification number |
| Roll Number | Exam roll number assigned for the test day |
| Exam Date & Shift | Date and shift timing of your examination session |
| Question IDs | Unique identification codes for each question |
| Option Selected | Your chosen answer option (A, B, C, or D) |
| Subject Classification | Physics, Chemistry, and Mathematics/Biology sections |
| Question Sequence | Sequential numbering of all test questions |
| Paper Set Information | Your specific question paper set variant |
IISER IAT 2026 Marking Scheme: Calculate Your Probable Score
Use the official marking scheme below to estimate your anticipated score:
| Response Type | Marks Awarded |
|---|---|
| Correct Answer | +4 Marks |
| Incorrect Answer | -1 Mark |
| Unattempted Question | 0 Marks |
To calculate your probable score, follow these steps:
- Download your response sheet and the provisional answer key from the official website.
- Systematically match each of your marked responses against the official answer options.
- Count the total number of questions you answered correctly.
- Multiply the count of correct answers by 4 to get positive marks.
- Count the total number of questions you answered incorrectly.
- Multiply the count of incorrect answers by 1 to calculate penalty marks.
- Subtract the penalty marks (negative marks) from your total positive marks to arrive at your final probable score out of 240.
For example, if you answered 180 questions correctly and 20 questions incorrectly, your score would be (180 × 4) – (20 × 1) = 720 – 20 = 700 marks. However, note that this is a probable score based on the provisional answer key, which may be modified after the objection process is complete.
How to Download IISER IAT 2026 Response Sheet
Follow these step-by-step instructions to access and download your response sheet:
- Visit the official IISER admission portal at https://iiseradmission.in.
- Click on the “Candidate Login” option displayed on the homepage.
- Enter your application number or user ID in the designated field.
- Input your password in the authentication field.
- Click the login button to access your candidate dashboard.
- Navigate to the section labeled “IAT 2026 Response Sheet” on your dashboard.
- Click on the response sheet link to display your complete exam responses.
- Review all your answers on the screen for verification.
- Click the download button to save your response sheet as a PDF file to your device.
- Store the downloaded PDF securely for future reference and objection submission if needed.
Expert Advice (Important)
Before submitting any objections against the answer key, carefully cross-verify your response sheet with the provisional answer key released by IISER. Many candidates miss questions they initially thought were incorrect, so take time to review each disputed item thoroughly. If you genuinely believe an answer option in the provisional key is incorrect, gather supporting evidence such as reference books, official definitions, or credible academic sources to strengthen your objection case before paying the ₹100 objection fee, which is completely non-refundable.
IISER IAT 2026 Answer Key Objection Process: How to Challenge
If you identify errors or have concerns about specific answer options in the provisional answer key, you may challenge them during the designated objection window. Here is the official process:
- Log in to the IISER admission portal at https://iiseradmission.in using your credentials.
- Locate and click on the “Answer Key Objection Link” on your dashboard.
- Enter your user ID and password to access the objection portal.
- Open your IAT response sheet from the objection interface.
- Carefully identify and select the specific questions you wish to challenge.
- Upload supporting evidence, documents, or justification in the prescribed format (PDF or image file).
- Review the objection fee amount (₹100 per question, non-refundable).
- Complete the payment using the available payment gateway options.
- Submit your objection before the deadline of 13/06/2026 at 11:59 PM.
- Retain the objection receipt reference number for future tracking and communication.
Remember that the objection fee is entirely non-refundable, regardless of whether your objection is accepted or rejected. Therefore, submit objections only for questions you are absolutely certain about.
IISER IAT 2026 Important Dates Timeline
| Event | Date |
|---|---|
| IAT 2026 Exam Conducted | 07/06/2026 |
| Provisional Answer Key Released | 07/06/2026 |
| Response Sheet Release | 09/06/2026 |
| Objection Submission Window Opens | 09/06/2026 |
| Objection Submission Deadline | 13/06/2026 (11:59 PM) |
| Final Answer Key Release | Fourth Week of June 2026 |
| IAT 2026 Result Declaration | First Week of July 2026 |
IISER IAT 2026 Score to Percentile Estimation Reference
Use the reference table below to estimate your probable percentile rank based on your calculated score:
| Score (Out of 240 Marks) | Estimated Percentile |
|---|---|
| 210 Marks and Above | 99.9 Percentile |
| 195 Marks | 99.8 Percentile |
| 185 Marks | 99.7 Percentile |
| 170 Marks | 99.4 Percentile |
| 155 Marks | 98.9 Percentile |
| 140 Marks | 98.3 Percentile |
| 125 Marks | 97.5 Percentile |
| 110 Marks | 96.0 Percentile |
| Below 100 Marks | 95.0 Percentile |
Please note that these percentile ranges are estimates based on historical data, and actual percentiles will be calculated by IISER after result declaration, depending on the total number of test takers and their score distribution.
Additional Information for IISER IAT 2026 Candidates
All objections submitted by candidates will undergo a rigorous review process by the expert committee at IISER. The committee will examine the submitted evidence, cross-reference academic standards, and determine whether modifications to the provisional answer key are warranted. Candidates whose objections are accepted will have their scores recalculated accordingly, and this revised score will be reflected in their final result.
The final answer key, incorporating all approved modifications from the objection process, will be published in the fourth week of June 2026. Candidates are strongly encouraged to monitor the official website regularly for updates on the final answer key release. Once the final answer key is available, students may compare it with their response sheet one final time before result declaration.
The IAT 2026 result will be declared in the first week of July 2026. Results will be available on the candidate portal, and successful candidates will proceed to the counselling and seat allocation process managed by IISER for undergraduate program admissions across all IISER campuses nationwide.
Important Links
| Particulars | Link |
|---|---|
| IAT 2026 Response Sheet Download Portal | Click Here |
| Official IISER Admission Website | Click Here |
Frequently Asked Questions (FAQs)
Q1. What is the IISER IAT 2026 response sheet, and why is it important?
Ans. The IISER IAT 2026 response sheet is an official document containing all the answers you marked during the examination. It is important because it allows you to verify your answers, compare them with the answer key, calculate your probable score, and raise objections against disputed answers before the final answer key is released.
Q2. How can I download my IISER IAT 2026 response sheet?
Ans. To download your response sheet, visit https://iiseradmission.in, log in with your application number and password, navigate to the response sheet section on your dashboard, and click the download button to save the PDF to your device.
Q3. What is the objection window deadline for IISER IAT 2026?
Ans. The objection window for IISER IAT 2026 remains open from 09/06/2026 to 13/06/2026 at 11:59 PM. All objections must be submitted before this deadline with the required ₹100 non-refundable fee per question.
Q4. How do I calculate my probable score using the IISER IAT response sheet?
Ans. Match your responses with the provisional answer key, count correct and incorrect answers, multiply correct answers by 4 marks, multiply incorrect answers by 1 mark, and subtract negative marks from positive marks. The result is your probable score out of 240.
Q5. Is the objection fee refundable if my challenge is rejected?
Ans. No, the objection fee of ₹100 per question is completely non-refundable. Submit objections only for questions you are certain about, after thorough verification.
Q6. When will the final answer key for IISER IAT 2026 be released?
Ans. The final answer key, after incorporating approved objections, will be released in the fourth week of June 2026. This will be followed by the result declaration in the first week of July 2026.
Q7. Can I raise objections for multiple questions in IISER IAT 2026?
Ans. Yes, you can raise objections for multiple questions, but you must pay ₹100 per question. Each objection must include supporting evidence and be submitted before the deadline of 13/06/2026 at 11:59 PM.
