AIIMS MBBS exam will be conducted in online mode through a Computer Based Test (CBT) in two shifts - Morning and Evening - on both these days. Candidates will be given three hours and thirty minutes to complete the entrance exam which will consist of objective-type questions from Physics, Chemistry, Biology (Botany & Zoology), General Knowledge and Aptitude & Logical Thinking.

For more information you can refer to this link - https://medicine.careers360.com/articles/aiims-mbbs-exam-pattern