Hello there!

Solving question papers from previous years is one of the best way for preparation especially when it comes to class 12th. It helps you get the proper understanding about the exam pattern, important topics to cover and marking scheme. It will also boost your confidence in real exam time.

Here is the link attached from the official website of Careers360 which will provide you with the previous years question papers of CHSE board for all the subjects along with biology. Kindly go through this!

https://school.careers360.com/boards/chse-odisha/odisha-chse-questions-paper

thank you!