Hello Rishabh, As per your query i would like to tell you
NIOS is recognized by the government of India,The candidate who passed class 12th or equivalent from any recognized board are eligible for exam. But eligibility criteria varies depending on course.

So if you want to ask about any specific course please tell specifically accordingly i will help you.

Best of luck
Regards
Dr Parmanand Agarwal
MBBS MD
Career counsellor

There should be no problem if you have done your 12th from NIOS. Also it depends which course you wish to pursue after your 12th and therefore the eligibility may vary as per the course and admission requirement.

 Are you asking for any specific course?