Hi

You can download NIOS previous year question papers for class 12th for all the subjects for each of Science Commerce and Arts stream by visiting our page the link for the same page is provided below

https://school.careers360.com/articles/nios-question-papers

These  papers will help you to understand the examination pattern, types of questions which are asked in exam, difficulty level of the examination, you will also get an idea of  the important topics which are covered in the exam by practising them so that you can accordingly prepare for the exam , you will also get to know your preparation level

Best of luck for your exam preparation

Thank you