It is better if you provide the details of the board exam you are going to have.however to access model papers for your Class 12 exams, you can visit the official website of your education board (like CBSE) and look for the "Sample Papers" section for Class 12; there you can download subject-wise model papers in PDF format, which will closely resemble the actual exam pattern and question types.

-Official Source: Always access model papers from the official website of your education board for accuracy.

-Subject-wise access: You can download model papers for each subject separately.

-Practice Regularly: Once you have the model papers, practice solving them to get familiar with the question format and time management.

Hope this is helpful to you..