Dheeraj, you have not mentioned whether you are talking about the 10th boards or the 12th board exams.

In case you are asking for 12th, you can view the subject wise previous years' papers of 2019 and 2018 from the given link: https://school.careers360.com/articles/hbse-12th-question-papers/amp It covers subjects like Physics, Chemistry, Mathematics, Biology, English core, Sociology, Political science, Accountancy, Business studies, etc

If you are asking for the 10th exams, you can go through the following link to refer the question papers of 2019 and 2018: https://school.careers360.com/articles/hbse-10th-question-papers/amp