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    IISER Answer Key 2026 (Out) - Download IAT Answer Key PDF

    IISER Answer Key 2026 (Out) - Download IAT Answer Key PDF

    Simran KashyapUpdated on 09 Jun 2026, 10:52 PM IST

    IISER Answer Key 2026: The Indian Institutes of Science Education and Research has released IISER IAT 2026 response sheet and answer key challenge window on June 9, 2026. The IISER IAT answer key 2026 challenge window link has been updated on the official website, iiseradmission.in. Aspirants can challenge the IISER IAT answer key 2026 from June 9 to 13, 2026. The provisional IISER IAT 2026 answer key was released on June 7, 2026. They can simply download it without any login after clicking on the IISER 2026 answer key link. Candidates can use the provisional answer key, along with the response sheet, OMR, and question paper, to verify their answers and estimate their probable scores. The IISER exam was held on June 7.
    Direct Link for IISER Answer Key 2026 Challenge Window

    IISER Answer Key 2026 (Out) - Download IAT Answer Key PDF
    IISER answer key

    The answer key helps students estimate their scores and evaluate their performance before the declaration of results. After reviewing all objections, the final IISER Answer Key 2026 will be published and used for preparing the result and merit list. Read more about the IISER IAT 2026 answer key below.

    IISER 2026 Answer Key Date

    The authority has announced the IISER answer key 2026 release date on the official website. Candidates can check the IISER answer key dates below.

    IISER 2026 Answer Key Dates

    EventsImportant Dates

    IISER exam date 2026

    June 7, 2026

    IISER Answer Key 2026 release date

    June 7, 2026

    Availability of IAT 2026 response sheet or OMR and question paper and answer key challenge start date

    June 9, 2026

    Last date to objection against the answer key of IISER 2026

    June 13, 2026

    IISER 2026 final answer key date

    June 2026

    IISER 2026 result date

    June 2026

    Related links:

    Steps to Download the IISER Answer Key 2026

    The IISER aptitude test answer key pdf has been updated on June 7, 2026 on the official website. The authorities will first release the provisional answer and then the IISER final answer key. Candidates can download the IISER answer key in a few simple steps. Follow the steps mentioned below to download the IAT exam answer key 2026.

    • Go to the IISER 2026 official website, iiseradmission.in

    • Click on the ‘IISER answer key 2026” link.

    • The answer key of IISER 2026 will be displayed.

    • Download the answer key and verify the answers.

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    How to Challenge IISER 2026 Answer Key?

    The authority allowed the candidates to challenge the provisional answer key of IISER 2026. Candidates who have genuine issues with the mentioned key can challenge the IISER answer key by providing supporting documents. Below are the steps to challenge the IISER answer key.

    Steps to challenge provisional IISER answer key 2026

    • Visit the IISER official website, iiseradmission.in

    • Click on the “Raise Objections” link.

    • Login using the application number and password.

    • IISER answer key PDF will be displayed on the screen.

    • Select the question Id and upload supporting documents.

    • Pay the processing fee and submit it.

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    How to Calculate Score from IISER 2026 Answer Key?

    Candidates can follow the below steps to calculate the the scores in IISER aptitude test,

    • First, calculate how many answers are correct.

    • Multiply all the correct answers by 3. For example, if X presents the correct answer marks, there are 100 correct answers, so that will fetch 300 marks.

    • Now, calculate how many answers are wrong.

    • Now, you have to deduct the marks for wrong answers. For example, if Y presents wrong answer marks, there are 20 wrong answers, so 20 marks will be deducted).

    • Now, subtract correct answer marks from wrong answer marks. For example, X-Y gives you (300-20 = 280), which is the actual score you have secured in the examinations.

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    Marking Scheme of IISER 2026

    ParticularsDetails

    Total Number of Questions

    60

    Marks allotted for the correct answer

    3 Marks will be rewarded

    Negative Marking

    1 Mark

    Marking for unattempted question

    0 Mark

    Frequently Asked Questions (FAQs)

    Q: When will the ISER Answer Key 2026 be released?
    A:

    The IISER answer key 2026 has been released on June 7, 2026.

    Q: Where can I download the IISER Official answer Key 2026?
    A:

    Candidates can download the final answer key of IISER 2026 on the official website – iiseradmission.in.

    Q: How can I raise an objection to IISER answer Key 2026?
    A:

    Candidates will be able to raise objection to the IISER IAT 2026 answer key through official website.

    Q: Will there be any negative marking in the IISER 2026 exam?
    A:

    Yes, there will be a negative mark of 1 in the IISER exam.

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    Questions related to IISER Aptitude Test

    On Question asked by student community

    Have a question related to IISER Aptitude Test ?

    Hi! To prepare for the IISER Aptitude Test, you need to understand the syllabus, exam pattern, and follow a proper preparation strategy. Click on the links below to learn more.

    Link: IISER Syllabus and Pattern
    IISER Preparation Tips

    You can find IISER Aptitude Test (IAT) previous year question papers and answer keys on educational websites like Careers 360. They provide with the official question papers as well as the answer key.

    Read more at

    https://engineering.careers360.com/articles/iiser-2025-question-paper-solutions

    Hello,

    If you have uploaded the old EWS certificate (2024–2025) instead of the new one (2025–2026), there is a chance that it may not be accepted, as the IISER notification clearly asks for the valid and updated EWS certificate for the year 2025–2026.

    Right now, if the correction window is

    Hello,

    If you have selected OBC-NCL category and uploaded a Central OBC-NCL certificate , then there is no issue .

    IISER accepts Central OBC-NCL certificate , as long as it is valid and issued by a competent authority. Just make sure the certificate is:

    • Issued within one year from the

    Hello aspirant,

    Applicants must take either the JEE Main or JEE Advanced exam in order to be considered for admission to the best engineering institutes in India. JEE Advanced and Main are administered by separate bodies. Because the JEE Advanced exam is more difficult than the JEE Main exam, candidates