You can get UP Board Science papers from 2021 and recent ones from:

UPMSP official site or

School teachers/sample paper books

For practice, focus on past 5-year papers. Direct PDF not available here, but visit your school or board site for scanned sets.

Hello aspirant,

To download the question paper of Science for UP Board,

• Visit the official website www.upmsp.edu.in (//www.upmsp.edu.in)
• Click on the question bank tab
• Search for the subject
• And then you can download the papers

Or you can visit careers360 website, which also provides the question paper,

https://school.careers360.com/boards/upmsp/up-board-class-10-last-5-year-question-paper

Best of luck for your preparation.