The Indian Institutes of Science Education and Research (IISER) successfully conducted the IISER Aptitude Test (IAT) 2025 on May 25, 2025, for admissions into undergraduate science programs.
Just a day later, on May 26, 2025, the provisional answer key was made available on the official IISER admission portal.
Ready for a challenge? Click here to take our quiz and show off your knowledge!
How to Download the IISER IAT 2025 Answer Key
To access the answer key:
Visit iiseradmission.in
Click on the “IAT 2025 Answer Key” link on the homepage.
Choose the language (English or Hindi) and download the PDF.
Estimating Your Score with the Answer Key
To calculate your approximate marks:
Correct Answer: +3 marks
Incorrect Answer: -1 mark
Ready for a challenge? Click here to take our quiz and show off your knowledge!
Example:
45 correct answers = 45 × 3 = 135
10 incorrect answers = 10 × 1 = 10
Estimated Score = 135 – 10 = 125
How to Raise Objections
Candidates who find discrepancies in the answer key can file objections:
1.Log in at iiseradmission.in.
2. Select the questions to challenge.
3. Upload valid reference/supporting documents.
4. Pay a non-refundable fee per question.
Only substantiated objections will be considered. After reviewing all challenges, IISER will publish the final answer key.
What’s Next After Results?
Qualified candidates will proceed to the following steps:
Choice filling for preferred IISER campuses
Document verification
Seat allotment
Payment of admission fee
All stages will be conducted online through a centralized system.
Participating IISER Campuses
1.IISER Pune (Maharashtra)
2. IISER Kolkata (West Bengal)
3. IISER Mohali (Punjab)
4. IISER Bhopal (Madhya Pradesh)
5. IISER Thiruvananthapuram (Kerala)
6. IISER Tirupati (Andhra Pradesh)
7. IISER Berhampur (Odisha)
Stay tuned to the official portal for updates on the final answer key and result declaration.