Dear student,

First of all you haven't mentioned that for which class you want science sample papers of nios.

So, as you haven't mentioned then I will be providing you both class 10th and 12th sample papers, and you can download that accordingly as per your requirement.

Check out the following link to get the sample papers of nios ( you will get for science as well as other subjects ) :-
https://school.careers360.com/articles/nios-sample-papers/amp

Also click on the following link to get previous years nios question papers :-
https://school.careers360.com/articles/nios-question-papers/amp