Yeah! If you wish to do your 10+2 along with your graduation, then you can definitely complete your 10+2 from the NIOS board. NIOS is one of the trusted open schooling platform and if you pass the 10+2 from this schooling system, then you will be eligible to use your marksheet for any examination as the institute is Government of India recognized.

To know more about NIOS 12th, visit the link below:

https://school.careers360.com/exams/nios-class-12

I hope this answer helps. All the very best for your future endeavors!