The OPSC OAS (Odisha Administrative Service) examination is Odisha's premier civil services exam conducted by the Odisha Public Service Commission. Odisha's unique identity — ancient Kalinga kingdom, Puri Jagannath Rath Yatra, Odissi dance, Chilika Lake, and a mineral-rich economy — makes its GK section rich with high-scoring topics for dedicated aspirants.
| Stage | Details | Marks |
|---|---|---|
| Prelims (GS) | 200 MCQs, 2 hours, 1/3 negative | 200 |
| Mains Essay | Descriptive | 200 |
| Mains GS I–IV | Descriptive, 3 hrs each | 200 each |
| Mains Optional | Descriptive | 400 |
| Interview | Personality test | 200 |
Kalinga War (261 BCE) — where Ashoka renounced violence after seeing Kalinga's destruction (present-day Odisha). Gajapati kingdom (medieval Odisha, Puri as capital). Bhakti movement: Panchasakha saints (Jagannath devotional tradition). Modern: Utkal Sammilani (1903) demanding separate Odisha state, formation of Odisha state in 1936 as first state created on linguistic basis in India. Biju Patnaik (legendary leader, aviation hero of Indonesia's independence).
Chilika Lake — Asia's largest brackish water lagoon, Ramsar wetland, Irrawaddy dolphins habitat. Eastern Ghats (partially in Odisha). Rivers: Mahanadi (Hirakud Dam — longest earthen dam in India), Brahmani, Baitarani, Subarnarekha. Tribal-dominated districts: Koraput, Malkangiri, Nabarangpur. Simlipal Biosphere Reserve (UNESCO). Bhitarkanika — saltwater crocodile and mangroves.
Steel production: Rourkela Steel Plant (SAIL), Tata Steel Kalinganagar, JSW Dolvi — Odisha is a major steel state. Mining: iron ore (Keonjhar, Sundergarh), coal, bauxite, chromite. POSCO (largest FDI project in India was proposed for Odisha). Tribal handicrafts (Odisha patta painting, Appliqué work of Pipili).
Practice Free OPSC Mock Tests Now
Free mock tests on ParikshaExamPrep — GS pattern with Odisha GK, Indian History, Geography, Science. No registration required.
The Kalinga War (261 BCE) was fought in what is now Odisha — it transformed Emperor Ashoka from a conqueror to a preacher of non-violence (Dhamma). This historical event is central to Odisha's identity and is tested in virtually every OPSC exam. Rock edicts in Odisha (Dhauli, Jaugada) document Ashoka's remorse after the war.
Chilika Lake is Asia's largest brackish water lagoon and India's first Ramsar wetland (1981). It hosts millions of migratory birds (over 160 species) and is home to Irrawaddy dolphins. The Nalabana Bird Sanctuary within Chilika is a wildlife sanctuary. Chilika is frequently tested in OPSC for its ecological and geographic importance.
The Puri Jagannath Rath Yatra is one of India's largest religious gatherings, inscribed by UNESCO as an Intangible Cultural Heritage. The Lord Jagannath temple in Puri is one of India's four dhams. The concept of the English word "Juggernaut" derives from Jagannath. Questions on Rath Yatra dates, the three chariots (Nandighosha, Taladhwaja, Darpadalana), and their significance are common in OPSC.
Hirakud Dam on the Mahanadi River near Sambalpur is the longest earthen/composite dam in the world (~26 km). It was the first major multipurpose river valley project of independent India (completed 1957). It provides irrigation, flood control, and hydroelectric power. This is a must-know fact for OPSC geography.
History (Odisha-specific history coverage is high), Geography, Political Science and International Relations, Sociology, Odia Literature, Economics, and Public Administration are popular OPSC Mains optional choices. History and Geography remain the most taken optionals due to overlap with GS syllabus.
प्रारंभिक (200 MCQ, 200 अंक, 1/3 नकारात्मक), मुख्य परीक्षा (निबंध + GS I-IV + वैकल्पिक), और साक्षात्कार (200 अंक)।
कलिंग युद्ध, हीराकुड बांध, चिल्का झील, जगन्नाथ रथ यात्रा, ओडिसी नृत्य, राउरकेला स्टील प्लांट।
स्नातक डिग्री अनिवार्य। आयु 21–38 (सामान्य)। ओडिशा अधिवास जरूरी।
ParikshaExamPrep.com पर मुफ्त GS मॉक टेस्ट। /tests पर जाएं।
Ready to Crack OPSC OAS 2026?
Odisha GK, Indian History, Geography — practice free on ParikshaExamPrep today.