The Odisha Public Service Commission (OPSC)  successfully conducted the Odisha Civil Services (OCS) Preliminary Examination 2024  on 12th October 2025  across various exam centres in Odisha. Aspirants who appeared for the OAS Prelim Exam 2024  can now access the official and unofficial OPSC OCS 2024 Prelim Answer Key  from this page. This post provides the complete answer keys for both GS Paper-I and CSAT Paper-II  along with a detailed solution and analysis. The OCS Prelimin