What is the OPSC OAS Main Examination structure?

The OAS Mains is a descriptive exam with six papers: Odia Language, English, General Studies I (History & Culture, Geography), General Studies II (Polity, Economy, Science), optional subject Paper I, and optional subject Paper II. Each paper carries 200 marks. A separate Odia essay paper may also be included. Mains is followed by a personality test (viva voce) for final selection.

Which optional subjects are available in OPSC OAS Mains?

Optional subjects available for OAS Mains include History, Geography, Political Science, Public Administration, Sociology, Economics, Anthropology, Law, Odia Literature, Mathematics, Physics, Chemistry, Botany, Zoology, and Commerce. Candidates should choose optionals based on their graduation background and availability of study materials, with History, Geography, and Public Administration being most popular.

How important is Odisha-specific GK for OPSC OAS?

Odisha-specific knowledge is extremely important for OPSC OAS, particularly in GS Paper I. Topics include Odisha history (ancient, medieval, modern), geography (rivers, minerals, forests, climate), tribal culture, Odia literature and art, state government schemes, Odisha economy, and industrial development. Questions on Odisha's tribal welfare programmes, Panchayati Raj, and district administration are consistently asked each year.

How should I prepare for the Odia Language section in OPSC OAS?

The Odia Language section tests reading comprehension, grammar, vocabulary, and ability to understand official Odia documents. Candidates should practice Odia grammar (sandhi, samasa, karak), read Odia newspapers like Samaj and Sambad daily, and study Odia Literature highlights. In Mains, the Odia essay paper requires structured writing on socio-economic and cultural topics relevant to Odisha.

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150

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120 min

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150

Total Marks

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Exam Overview

Conducting BodyOdisha Public Service Commission (OPSC)

Exam ModeBoth

Marking Scheme+1 for correct, -0.33 negative marking for wrong answer

SectionsGeneral Studies Paper I, General Studies Paper II, Odia Language

FrequencyAnnual

Next ExamApril 2027

RegistrationJanuary 2027

EligibilityGraduate from any recognized university; age 21–38 years for unreserved

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OPSC OAS Preparation Tips

Expert strategies to help you crack OPSC OAS on your first attempt.

Study Odisha-specific topics deeply — Odisha history from Kalinga era to modern freedom movement, mineral resources (coal, iron ore, bauxite), tribal communities, and major government schemes like KALIA and Biju Swasthya Kalyan Yojana.

For GS Paper II (Aptitude & Reasoning), practice Data Interpretation, Logical Reasoning, and Decision-Making questions at CSAT level — clear the cut-off first, then focus on scoring high in GS Paper I.

Revise Odia Language grammar thoroughly; study Odia sandhi, karak, vibhakti, and practice comprehension passages from standard Odia textbooks used in Class IX–X Odisha Board.

Maintain a negative marking strategy — attempt only those questions where confidence is high (above 70%); guessing 50-50 questions leads to net mark loss in OAS Prelims.

Frequently Asked Questions

Common questions about OPSC OAS exam pattern, eligibility, and preparation.

The OPSC OAS Preliminary Examination has 150 MCQ questions to be completed in 120 minutes. The exam covers General Studies Paper I (Odisha & Indian History, Geography, Polity, Economy, Science), General Studies Paper II (Aptitude, Reasoning, English comprehension), and Odia Language. Each correct answer carries 1 mark and there is 1/3 negative marking for wrong answers. Minimum qualifying marks must be secured in each section.

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