Jayprakash, with just few days left for the board exams, it is a good idea to solve the previous years' papers and sample papers to get an idea of the question pattern, marking scheme and time management techniques.

You can go to the below link to get the model question papers with answers for Physics, Chemistry, Biology and other subjects for CHSE board Odisha: http://chseodisha.nic.in/ques-ans.php

You can also find the previous years' papers from the link given below: https://school.careers360.com/articles/odisha-chse-questions-paper/amp