Hi

Which board are you from?
Anyway,
It is CBSE board which uses NCERT for its curriculum, so I am guessing you from CBSE board. If not then do let me know
The link to download 10th cbse sample papers of science and other subjects as well is given below:-

https://school.careers360.com/boards/cbse/cbse-class-10-science-sample-papers

https://school.careers360.com/boards/cbse/cbse-class-10-sample-papers

Solving these papers will be very beneficial for you, it will help you to :-

------) know the pattern  of the examination.

------)  know the kind / types  of questions which are there in your  examination.

------)  it will give you an idea of the difficulty level  of  the examination .

------)  you  will get to know the important   topics  which  are  covered and asked often in the exam , so  that  you  can  accordingly plan for your examination.

------) it  will  help  you  to check and gauge your level  for  preparation for the examination,

------) it will let you  know  your areas or the topics you are weak at so that you can work on them  and   can  perform  even better in your examination.

------)  will   help you to improve your time management skills so that in your actual examination you can solve questions with better speed and accuracy .

Good luck for your examination preparation.

I hope that you find this helpful.

Thank you