IISER Aptitude Test (IAT)

Exam pattern and marking scheme

IAT 2025 will be conducted as a computer-based test in various centres across India.

IAT will consist of 60 questions, 15 questions each from Biology, Chemistry, Mathematics, and Physics.

Total duration of the test will be 180 minutes. Questions will be of multiple choice type. Each question will have only one correct answer.

• Each correct answer will be awarded 4 marks.
• Each incorrect answer will lead to the deduction of 1 mark.
• Unanswered questions will be awarded 0 mark.
• Therefore, maximum marks in IAT will be 240.

The total marks obtained by a candidate out of 240 will be considered for preparing the Rank List.

Not every candidate appearing in IAT 2025 will be awarded a rank. The rank cut-off will be announced at an appropriate time. Further, getting a rank does not guarantee offer/admission to an IISER.