The syllabus for the UPSC Civil Services Preliminary Examination encompasses two papers: General Studies I and General Studies II, also known as the CSAT (Civil Services Aptitude Test). General Studies I includes topics like Indian history, geography, politics, and current affairs, while General Studies II focuses on comprehension, logical reasoning, and interpersonal skills. Both papers aim to assess a candidate's knowledge and aptitude for civil service roles. Preparation for the syllabus requires thorough understanding and critical analysis of these topics.