Samikshasingh
Yes. The Secondary/Senior Secondary certificates obtained from NIOS have the same recognition as certificates issued by other Boards.
All the Boards either National or State including NIOS are following the National Curriculum Framework (2005). Thus, the Secondary and the Senior Secondary Certificates of NIOS are equivalent and at par to the Secondary and the Senior Secondary Certificate of other Boards.
The Association of Indian Universities vide its letter no. EV11/(354)/91 dated 25th July 1991 has also granted equivalency of courses of NIOS with those of other examinations of recognized Boards for the purpose of admission to higher studies in Indian Universities.
I hope this information helps to resolve your doubt.