IISER IAT 2026 Answer Key Released: Download Provisional PDF & Raise Objections Online

IISER IAT Answer Key 2026 Released: Download Provisional PDF at iiseradmission.in

The Indian Institutes of Science Education and Research (IISER) have released the provisional answer key for the IISER Aptitude Test (IAT) 2026. The answer key was published on June 7, 2026, the same day as the exam, and is available for download on the official portal iiseradmission.in. Candidates who appeared for the IAT 2026 can now access the answer key to evaluate their performance and estimate their scores before the final results.

The provisional answer key includes correct answers for all questions asked in the exam. Candidates are advised to download the PDF and compare it with their response sheet, which will be made available from June 9, 2026. This early release allows aspirants to raise objections if they find any discrepancies in the key. The final answer key will be published after reviewing all objections, tentatively in the fourth week of June 2026.

About IISER and the IAT 2026 Exam

The Indian Institutes of Science Education and Research (IISER) are premier institutions in India dedicated to science education and research. The IISER Aptitude Test (IAT) is the entrance exam for admission to the BS-MS dual degree program at various IISER campuses across the country. The IAT 2026 was conducted on June 7, 2026, from 9:00 AM to 12:00 Noon IST, in multiple centers nationwide. Thousands of aspiring scientists appeared for this highly competitive exam, which tests candidates in subjects like Physics, Chemistry, Mathematics, and Biology. The release of the provisional answer key is a crucial step in the admission process, enabling candidates to gauge their performance and plan their next steps.

IISER IAT 2026 Answer Key Overview & Key Details

How to File Objections for IISER IAT 2026 Answer Key

Candidates who find discrepancies in the provisional answer key can raise objections through the official objection portal. The objection window is open from June 9 to June 13, 2026. Late submissions will not be entertained. To file an objection, follow these steps:

• Visit the official IISER admission website: iiseradmission.in
• Click on the IAT 2026 Answer Key Objection Portal link on the homepage.
• Log in using your credentials (application number and date of birth).
• Select the question(s) you wish to challenge and provide a valid justification.
• Upload supporting documents (if any) to substantiate your claim.
• Pay the applicable objection fee per question (if required).
• Submit the objection and keep a copy of the acknowledgment for future reference.

After the objection deadline, the expert panel will review all challenges and release the final answer key. The final key will be used for result preparation.

Step-by-Step Guide to Download IISER IAT 2026 Answer Key

Downloading the IISER IAT 2026 provisional answer key is a straightforward process. Follow the steps below to get your copy:

Step 1: Visit the Official IISER Admission Portal

Open your preferred web browser and go to iiseradmission.in. Ensure you have a stable internet connection for a smooth experience.

Step 2: Locate the Answer Key Link

On the homepage, look for the link titled "IAT 2026 Provisional Answer Key". It is usually displayed prominently in the announcements section.

Step 3: Select Language and Download PDF

Click on the link. You will be redirected to a page where you can choose the answer key in English or Hindi. Select your preferred language, and the PDF will open in a new tab or download automatically.

Step 4: Save and Print for Reference

Save the PDF file to your device. We recommend taking a printout for easy comparison with your response sheet and for future reference during the objection process.

IISER IAT 2026 Marking Scheme & Tentative Score Calculation

Understanding the marking scheme is essential for calculating your tentative score. The IAT 2026 follows a standard pattern:

• +3 marks for each correct answer
• –1 mark for each incorrect answer
• No penalty for unattempted questions

To calculate your tentative score:

1. Download the provisional answer key and your response sheet (available from June 9).
2. Compare each of your answers with the correct answers provided in the key.
3. Count the number of correct answers (C) and incorrect answers (W).
4. Apply the formula: Tentative Score = (C × 3) – (W × 1).
5. This score will give you an estimate of your performance before the final results.

Important Dates for IISER IAT 2026 Answer Key & Results

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