Boards-10th

There are several sources where one can get Class 10 Hindi medium previous years' question papers:
Official Board Websites: Most state boards including CBSE (where applicable) allows download of previous papers on their websites in PDF format.

NCERT and State Board Bookshops: Also, some bookshops have books that contain the past question papers of class ten. In Hindi medium look for the likes of Arihant or Oswaal who tend to have this collections.

School or Library Resources: There are some schools and libraries which do allow use of past papers to student – you can ask in your school.
Coaching Institutes and Online Forums :- In some cases coaching centers might have previous papers for students, also online learning communities or student telegram groups can be a good option.
These avenues will surely help you in getting old question papers to enhance your preparations.

These steps you need follow to prepare for bihar board exam in English Medium for class 10th:

At first you need to understand the syllabus of the Bihar Board 10th class for English medium. Therefore, check the official website for understanding the syllabus.

After that make study effective schedule and start studying according to the schedule and stick to it and plan proper timing for managing times according to the syllabus.

Use the prescribed textbooks as per the Bihar board to study and practice regularly and solve the sample papers and previous year question papers.

As per the information CBSE books are comprehensive and widely used, they may not align perfectly with the Bihar Board's syllabus. Therefore, it is recommended to primarily study from the mentioned textbooks by the Bihar board and for other references use the CBSE textbooks if needed.