Hello there,

Let me guess that, you are asking the sample papers for CBSE Board Exams 2021 , for 12th class. Now let me clear you that, both the sample papers of Arihant and Oswal are good. Both will clear your minor doubts. But to be honest, Arihant Sample Papers are somewhat better than the Oswal Sample papers. The quality of questions, that you will find in Arihant sample papers is better than the Oswal sample papers. And also, let me add one thing that, if you are trying to solve sample papers, then it is very good thing. More the papers you solve, the better your score will be.

Hope it helps.