| Prelims Paper-I — General StudiesPrelims Paper-I — General Studies | Current events of national, international and Bihar state importance; Indian History — ancient, medieval, modern, freedom movement; History & culture of Bihar; Indian & Bihar Geography — physical, social, economic; Indian & Bihar Polity, Constitution & Governance; Economic & social development; Environmental ecology, biodiversity & climate change; General science & technology; Static GK relevant to Bihar.Current events of national, international and Bihar state importance; Indian History — ancient, medieval, modern, freedom movement; History & culture of Bihar; Indian & Bihar Geography — physical, social, economic; Indian & Bihar Polity, Constitution & Governance; Economic & social development; Environmental ecology, biodiversity & climate change; General science & technology; Static GK relevant to Bihar. |
| Prelims Paper-II (CSAT — qualifying)Prelims Paper-II (CSAT — qualifying) | Comprehension; Interpersonal skills; Logical & analytical reasoning; Decision making; Mental ability; Class X-level numeracy; Data interpretation.Comprehension; Interpersonal skills; Logical & analytical reasoning; Decision making; Mental ability; Class X-level numeracy; Data interpretation. |
| Mains — General Studies (multiple papers)Mains — General Studies (multiple papers) | GS Paper-I — Indian heritage & culture, history & geography of India and Bihar, world history. GS Paper-II — Indian Constitution, polity, social justice, international relations, governance. GS Paper-III — Indian economy, agriculture, science & technology, environment, security, disaster management. GS Paper-IV — Ethics, integrity & aptitude with case studies.GS Paper-I — Indian heritage & culture, history & geography of India and Bihar, world history. GS Paper-II — Indian Constitution, polity, social justice, international relations, governance. GS Paper-III — Indian economy, agriculture, science & technology, environment, security, disaster management. GS Paper-IV — Ethics, integrity & aptitude with case studies. |
| Mains — Compulsory Language & English Papers (qualifying)Mains — Compulsory Language & English Papers (qualifying) | State language paper — comprehension, précis, essay, translation in the official language of Bihar. English language paper — comprehension, précis, essay, grammar.State language paper — comprehension, précis, essay, translation in the official language of Bihar. English language paper — comprehension, précis, essay, grammar. |
| Mains — Optional Subject (where applicable)Mains — Optional Subject (where applicable) | Candidate's chosen optional from the list provided in the Bihar PSC notification — usually 25-30 subjects covering humanities, sciences, languages.Candidate's chosen optional from the list provided in the Bihar PSC notification — usually 25-30 subjects covering humanities, sciences, languages. |
| Personality Test / InterviewPersonality Test / Interview | Conducted by the Bihar Public Service Commission. Assesses leadership, communication, decision-making, awareness of state-specific affairs and suitability for civil service.Conducted by the Bihar Public Service Commission. Assesses leadership, communication, decision-making, awareness of state-specific affairs and suitability for civil service. |
