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IISER IAT 2023 exam; Check eligibility, steps, dates, marking scheme; Apply now

The application portal for IISER IAT 2023 will be live soon. Read the article for complete details.

The Indian Institutes of Science Education and Research (IISER) is inviting online applications from eligible candidates for the Aptitude Test or IISER IAT 2023. The online application portal will be open from the 15th of April 2023, till the deadline on the 25th of May, 2023.

IISER IAT 2023 is conducted in order to select candidates for admission into the five-year Bachelor of Science and Master of Science (BS-MS) dual degree program offered at IISERs. Candidates are advised to keep a close watch on the official website.

Also read: Recruitment in Central Bank of India: apply now for 5000 Apprentice Posts

Eligibility Criteria

  • Candidates applying for the IISER IAT 2023 must have qualified or are currently appearing in Class 12th or equivalent examination in the science stream either in the year 2022 or 2023.
  • Candidates must have taken at least three subjects including biology, chemistry, mathematics, and physics during their Class 12th or equivalent exam.

How to apply?

  • Af first, visit the official portal of IISER IAT 2023
  • On the homepage, go to the menu option and click on the ‘Aptitude Test’
  • Register yourself using the necessary credentials and upload the essential documents in the instructed formats
  • Proceed to the payment procedure after this
  • Completing these steps, download and print copies of the application form and the payment receipt.

Important Dates

Application Portal opens for applicationsApril 15, 2023
Last date for online applicationsMay 25, 2023
Corrections in application formMay 28, 2023, 11:00 AM to May 29, 2023, 5:00 PM
Release of Hall TicketJune 10, 2023
IISER IAT 2023June 17, 2023
Upload of student’s response formJune 17, 2023
Display of answer keysJune 17, 2023
Portal opens to file objectionsJune 20, 2023
Last date to file objectionsJune 22, 2023
Display of final answer keysJune 30, 2023
IAT result publicationJuly 3, 2023
Portal opens to upload documents and freeze IISER preferencesJuly 4, 2023, to July 7, 2023
First round of admission offersJuly 15, 2023

Marking Scheme

The marking scheme for IISER IAT 2023 is as follows:

  • For each correct answer, 4 marks will be awarded.
  • For each incorrect answer, 1 mark will be deducted.
  • For unanswered questions, there will be no mark awarded.

IISER IAT 2023 will consist of a total of 60 questions, given in multiple-choice format with only one correct answer. Out of which 15 questions will be from each subject: Biology, Chemistry, Mathematics and Physics. The total time allotted for answering the test will be 180 minutes.


Not every candidate appearing in IAT 2023 will be awarded a rank. The rank cut-off will be announced at an appropriate time. Further, getting a rank does not guarantee an offer/admission to an IISER.

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Unmona Borah

Unmona is one of the creative writers, who helps to deliver great content to the audiences of Bohikitap. She has completed her graduation in Chemistry and is presently pursuing higher studies in Assam Women's University.
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