Dear aspirant !

Hope you are doing well

I can't provide the exact 2025 board exam question papers as they are not publicly available before the exams take place. However, I can suggest a few steps you can follow to prepare effectively for the exam:

1. Previous Year Papers : Look for past years' question papers for Bihar Board Class 12 exams. These are often available on educational websites or can be found in your school library. Practicing these can give you a good idea of the exam pattern and types of questions.

2. Model Papers : Many educational boards release model question papers or sample papers before the exams. These are available on the official Bihar Board website or other educational portals.

3. Reference Books : Use reference books and study materials designed for Bihar Board students. These often include practice questions that are similar to what might appear in the exams.

4. Online Resources : Websites like Careers360, often provide sample papers and solutions for board exam preparation.
   
   https://school.careers360.com/download/ebooks-and-sample-papers?sort_by=2&exam=328&content_sub_category=58683

You can check the official Bihar Board website or other educational platforms for updates on the 2025 exams. Let me know if you need help with finding resources or any specific subjects!