hello candidate

i don't have good idea regarding it but i think you can appear . i have looked into the eligibility criteria but it isn't showing info ragarding students of open university .however check out this

http://idaindia.com/rd-eligibility/

and

http://idaindia.com/wp-content/uploads/2018/06/Eligibility-for-RD-exam.docx

visit the official website for same

please repost this question as someone knows better can answer it