Hi,

There will be questions from Physics,Chemistry, Mathematics and Biology in IISER aptitude test.  The syllabus may vary every year. You can check the syllabus from the official website of IISER

http://www.iiseradmission.in/index.php

Or you can also refer the following article.

https://engineering.careers360.com/exams/iiser-aptitude-test?utm_source=google&utm_medium=kg

All the best

Hello aspirant,

Biology section will be there for IISER entrance exam.  It is an online exam with 3 hours and 60 questions. 15 questions each from chemistry, physics, maths and biology.  The total marks will be out of 180 and there is 3 marks for each right answer and 1 mark will be reduced for all wrong answers.

To know more about IISER exam pattern and syllabus, refer the article below:

https://engineering.careers360.com/articles/iiser-syllabus-exam-pattern

Hope this was helpful