The Indian Institutes of Science Education and Research (IISER) has released the provisional IISER IAT Answer Key 2026 on 07/06/2026. Candidates who appeared for the exam can now review their performance using the official document available on the admission portal.
The individual response sheet is scheduled for release on 09/06/2026. An official objection window has opened, allowing test-takers to challenge any discrepancies until the 13/06/2026 deadline.
Answer Key Overview
| Particulars | Details |
|---|---|
| Exam Name | IISER Aptitude Test (IAT) 2026 |
| Conducting Authority | Indian Institutes of Science Education and Research |
| Exam Conduct Date | 07/06/2026 (9:00 AM – 12:00 Noon IST) |
| Provisional Answer Key Released | 07/06/2026 |
| Response Sheet Available From | 09/06/2026 |
| Official Portal | https://www.iiseradmission.in |
Key Dates & Deadlines
| Event | Date |
|---|---|
| IISER IAT 2026 Examination | 07/06/2026 |
| Provisional Answer Key Publication | 07/06/2026 |
| Response Sheet Release | 09/06/2026 |
| Objection Submission Window Opens | 09/06/2026 |
| Objection Submission Window Closes | 13/06/2026 |
| Document Upload Timeline | 13/06/2026 to 21/06/2026 |
| Final Answer Key Expected | 4th Week of June 2026 |
How to Download IISER IAT Answer Key 2026
To access your provisional answer key and response sheet, simply click the official download link provided below in the Important Links section.
Marking Scheme for IISER IAT 2026
| Marking Component | Points |
|---|---|
| Each Correct Response | +3 marks |
| Each Incorrect Response | -1 mark |
| Unattempted Questions | 0 marks |
How to Calculate Your Provisional Score
Your final tentative score can be calculated based on the official marking scheme: Score = (Total Correct Answers × 3) – (Total Incorrect Answers × 1). Unattempted questions do not impact your score.
Raising Objections Against the Answer Key
Candidates who identify errors in the provisional key can submit challenges through the official portal.
- Objections are accepted between 09/06/2026 and 13/06/2026.
- Submissions require clear supporting documents (e.g., textbook references) and any applicable processing fee as mandated by IISER.
- Late submissions beyond the deadline will not be processed.
Important Links
| Particulars | Link |
|---|---|
| Official Admission Portal | Click Here |
| Provisional Answer Key Download | Download Here |
Frequently Asked Questions (FAQs)
Q1. When did the provisional IISER IAT Answer Key 2026 come out?
Ans. IISER released the provisional key on 07/06/2026, the exact same day the exam took place. You can find it right on their main admission site.
Q2. Where can I get my copy of the IISER IAT 2026 answer key?
Ans. Just head over to the official portal at https://www.iiseradmission.in. The PDF is available to download directly from the homepage in either English or Hindi.
Q3. When do the response sheets become available?
Ans. You will be able to view your specific marked responses starting 09/06/2026 by logging into the official IISER portal.
Q4. How much time do I have to challenge a wrong answer?
Ans. The objection window is open strictly from 09/06/2026 to 13/06/2026. Make sure to submit everything before that deadline because late challenges will not be accepted.
Q5. How does the grading work for the IISER IAT 2026?
Ans. The marking scheme is straightforward: you get 3 points for every right answer and lose 1 point for every wrong one. Skipped questions do not affect your score at all.
Q6. What do I need to include if I’m submitting an objection?
Ans. You have to attach solid proof like textbook references or detailed step-by-step solutions that clearly show why the official answer is incorrect.
