OPSC OAS Answer Key 2020: Odisha Public Service Commission Regulated the Odisha Administrative Services Prelims Examination. OPSC OAS Pre Exam Was Conducted On 15 March 2020 (Sunday ). On 06-03-2020 Board Released the Call Letter For Candidates Identity Purpose.The Written Test Was Conducted in Several Examination Venues. Selection of the Applicants Will be Depends On […]