IISER - AT will consist of 60 questions, 15 questions each from Biology, Chemistry, Mathematics, and Physics.

Total time for answering the test will be 3 Hours. Questions will be of multiple choice type with 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.