hello aspirant,

I hope that you are doing absolutely great.
With reference to your above mentioned query, i would like to tell you that you can apply your NIOS class 12th passing certificate or mark sheet in your JEE mains or BITSAT Examination 2022, as this is the only freshly valid  certificate for your class 12th result. Further, you should register as 12th class passed student while filling up your JEE mains or BITSAT Examination form.

Further, to know more details and information about JEE mains 2022 exam and BITSAT 2022, you can prefer following these below mentioned link for more details : https://engineering.careers360.com/articles/jee-main-2022

https://www.careers360.com/exams/bitsat#:~:text=BITSAT%20exam%202022%20will%20be,can%20apply%20till%20May%2021.

I hope that this will help.