Errorless 13 Year-wise Odisha OPSC/ OAS Civil Services General Studies Prelims Previous Year Solved Papers is the thoroughly revised and updated 5th Edition. ? The book covers Past 13 years Solved papers of Odisha PSC Prelims Paper 1 from 2006 - 2026 along with 5 sets of Prelims Paper 2 of Aptitude from 2021 - 2026. ? In all, it includes more than 1780+ MCQs with detailed explanations. ? All questions have authentic and errorless solutions. ? All Previous year Preim question paper answer keys are validated and verified with OPSC. ? A useful handbook for OPSC, OAS, UPSC and other various State PSC Exams.