IISER Answer Key 2025 (OUT) - Download IAT Answer Key PDF

IISER Answer Key 2025 (OUT) - Download IAT Answer Key PDF

Jalla VenkateshUpdated on 29 May 2025, 05:58 PM IST

IISER Answer Key 2025: The Indian Institutes of Science Education and Research has activated the IISER IAT 2025 answer key objection portal on May 29, 2025. The IISER answer key link is available on the official website, iiseradmission.in. The last date to raise objection to the IISER IAT answer key 2025 is June 1, 2025. The IISER IAT 2025 answer key was released on May 26 online. The IISER answer key PDF conatins the correct answers to the questions asked in the IAT 2025. 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 admission test was conducted on May 25, 2025. The IISER answer key 2025 link will be updated here.
Direct link to raise objection for IISER 2025 Answer Key

IISER 2025 Answer Key Date

IISER Answer Key 2025 (OUT) - Download IAT Answer Key PDF
IISER answer key

The authority announced the IISER answer key 2025 release date on the official website. Candidates can check the IISER answer key 2025 dates below.

IISER 2025 Answer Key Dates

Events

Important Dates

IISER exam date 2025

May 25, 2025

IISER Answer Key 2025 release date

May 26, 2025

Availability of IAT 2025 response sheet or OMR and question paper

May 29, 2025

Date to objection against the answer key of IISER 2025

May 29 to June 1, 2025

IISER 2025 final answer key date

June 2025

IISER 2025 result date

June 2025

Related links:

Steps to Download the IISER Answer Key 2025

Candidates can access the IISER aptitude test answer key pdf at the official website. The authorities has released the provisional answer key for IISER 2025 on May 26, 2025. Candidates can download the IISER answer key in a few simple steps. Follow the steps mentioned below to download the IAT exam answer key 2025.

  • Go to the IISER 2025 official website, iiseradmission.in

  • Click on the ‘IISER answer key 2025” link.

  • Enter the application number (roll number) and password.

  • The answer key of IISER 2025 will be displayed.

  • Download the answer key and verify the answers.

How to challenge IISER 2025 Answer Key?

The authority have allowed the candidates to challenge the provisional answer key of IISER 2025. 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 2025

  • 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 2025 Answer Key?

To calculate the the scores in IISER aptitude test, candidates can follow the below steps:

  • 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.

Syllabus
This IISER syllabus ebook thoroughly outlines the Physics, Chemistry, Mathematics, and Biology topics featured in the IISER Aptitude Test.
Download EBook

Marking Scheme of IISER 2025

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: How can I raise an objection to IISER answer Key 2025?
A:

Candidates can raise objection to the IISER IAT 2025 answer key through official website.

Q: When will the ISER Answer Key 2025 be released?
A:

The IISER answer key 2025 was released on May 26, 2025.

Q: Where can I download the IISER Official answer Key 2025?
A:

Candidates can download the final answer key of IISER 2025 on the official website – iiseradmission.in.

Q: What is the IISER Aptitude Test 2025 exam date?
A:

The IISER aptitude test 2025 was held on May 25, 2025.

Q: Will there be any negative marking in the IISER 2025 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 ?

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 closed, you won’t be able to change it. But don’t worry too much. Once the results are out and before the counselling starts (before 16 June), there is usually a document verification process. You may get a chance to upload the correct and updated certificate during that time.

Just make sure you get the 2025–2026 EWS certificate ready as soon as possible, so if they allow updates before counselling, you can upload the correct one.

Hope it helps !

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 application date.

  • Clearly mentions OBC-NCL and your caste is in the central list .

If these points are okay, then your form is fine.

Hope it helps !

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 who are prepared for it have an advantage.

To know the complete preparation strategies, you can visit our website by clicking on the link given below.

https://engineering.careers360.com/articles/how-should-preparation-strategies-differ-for-jee-main-and-jee-advanced

Thank you

Hope this information helps you.

Hello reader,

Last year that is 2023 around 9.5 lakh students attempted for jee mains round one, while 8.6 lakh students attempted for jee mains round two. Across both the sessions around 12 lakh students sat for the jee mains exam in year 2023.

Hey there,

Which exam are you talking about? Please provide the proper information in your question so that we can help you with your query.

Since I found your question in the Engineering section, I guess you are asking about the engineering exam (JEE Exam). Let me tell you about the JEE exam:

Through the JEE exam, you can access all the undergraduate courses in the engineering domain. You can get admission into engineering courses like B.Tech in Computer Science Engineering, B.Tech in Electronics and Communication, B.Tech in Electrical Engineering, B.Tech in Mechanical Engineering, B.Tech in Civil Engineering, and many more. This exam allows you to get admission into the top engineering colleges in India like IITs, NITs, GFTIs, etc.

I hope this information helps you. If you need more information about anything, please share your queries with us.