IISER IAT Answer Key 2026 provisional version has been made available on 07/06/2026 for candidates who appeared in the examination. The Indian Institutes of Science Education and Research (WISER) has uploaded the document on its official admission portal, allowing test-takers to cross-check their responses and understand their performance before the final answer key is published.
Candidates can access and download the provisional answer key from the official website portal. The response sheet will also be released on 09/06/2026, enabling students to compare their marked answers with the official correct responses. An objection window has been opened for those who wish to challenge any answer they believe is incorrect, with the deadline set for 13/06/2026.
Note: All information is sourced from the official notification. Students are advised to verify all details from the official website before proceeding.
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
- Navigate to the official WISER admission website using your web browser.
- Locate and select the “IAT 2026 Provisional Answer Key” section displayed prominently on the homepage.
- Choose your preferred language option – the answer key is available in both English and Hindi formats.
- The PDF document will open in your browser window for immediate viewing.
- Download the file to your device and save it for future reference and comparison purposes.
- Print a copy of the answer key to facilitate a detailed comparison with your response sheet.
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
- Obtain your response sheet once it becomes available on 09/06/2026 through the official portal.
- Systematically match each of your marked answers against the official correct answers provided in the provisional answer key.
- Create two tallies – one for correct responses and another for wrong responses based on your comparison.
- Apply the formula: Your Tentative Score = (Number of Correct Answers × 3) – (Number of Incorrect Answers × 1).
- Note your calculated score while keeping in mind that this remains provisional until the final answer key is released.
Raising Objections Against the Answer Key
Objection Submission Process
If you identify any questions or answers that you believe contain errors, follow these steps:
- Access the official WISER admission portal during the objection window period.
- Navigate to the dedicated “IAT 2026 Answer Key Challenge Portal” or objection module.
- Complete the login process using your examination roll number and registered credentials.
- Select the specific question number(s) that you wish to challenge or dispute.
- Attach supporting documentation, explanations, or reference materials justifying your objection.
- Submit your challenge before the deadline of 13/06/2026.
Important Objection Guidelines
- Objections are only accepted through the official online portal between 09/06/2026 and 13/06/2026.
- Submissions received after 13/06/2026 will not be entertained under any circumstances.
- Ensure all supporting documents are clearly legible and properly uploaded in the specified format.
- Any applicable objection processing fee must be paid during the submission window if mandated by IISER.
Expert Advice (Important)
Many candidates overlook the response sheet details when cross-checking their scores – ensure you thoroughly review not just the answer key but also your marked responses from the official response sheet to identify any discrepancies in recording. Do not wait until the last moment to raise objections; if you spot a questionable answer, submit your challenge within the first two days of the objection window opening to allow WISER adequate time to review. Additionally, maintain a record of your provisional score calculation and any objections submitted, as this documentation will be valuable if you need to correspond with WISER regarding result queries or merit list placement concerns.
Important Links
| Particulars | Link |
|---|---|
| Official Admission Portal | Click Here |
| Provisional Answer Key Download | Download Here |
Frequently Asked Questions (FAQs)
Q1. When was the IISER IAT Answer Key 2026 released?
Ans. The provisional answer key was published on 07/06/2026, the same day as the examination, on the official IISER admission website.
Q2. How do I download the IISER IAT 2026 provisional answer key?
Ans. Visit https://www.iiseradmission.in, locate the answer key section on the homepage, and download the PDF in your preferred language (English or Hindi).
Q3. When will my response sheet be available?
Ans. Your individual response sheet showing all the answers you marked during the examination will be accessible from 09/06/2026 onwards on the official portal.
Q4. What is the deadline for submitting objections against the answer key?
Ans. Candidates must submit objections between 09/06/2026 and 13/06/2026 through the official objection portal. No late submissions will be accepted.
Q5. How is the IISER IAT 2026 score calculated?
Ans. Your score is calculated as follows: (Number of Correct Answers × 3) minus (Number of Incorrect Answers × 1). No deduction is applied for unattempted questions.
Q6. When will the final IISER IAT Answer Key 2026 be published?
Ans. The final answer key is expected to be released in the 4th week of June 2026, after reviewing all objections received from candidates.
Q7. What documents do I need to upload with my objection?
Ans. Upload supporting materials such as reference books, solved solutions, or explanations that justify your challenge to the answer provided, along with a clear explanation of your objection.
