The UPSC civil services examination involves three main stages: Preliminary, Mains, and the Personality Test or interview. The Preliminary stage consists of two objective-type papers that screen candidates. Those who qualify proceed to the Mains, which comprises nine subjective papers focused on various subjects, aimed at assessing the candidates' detailed knowledge and analytical abilities. Finally, shortlisted candidates appear for the Personality Test, which evaluates their interpersonal skills and suitability for public service. This multi-stage process ensures a thorough assessment of all candidates.