The weightage of different sections in the UPSC civil services exams varies. For the preliminary exam, the two papers—General Studies I and General Studies II (CSAT)—are crucial, with the former carrying significant weight for the overall outcome. The mains examination includes multiple papers including essays, general studies, and optional subjects, each with specific marks allocated, contributing significantly to the final score. Additionally, the interview phase is also weighted, influencing the final selection. Understanding the nuanced weightage of each section helps candidates prioritize their preparation effectively and allocate appropriate time to focus on critical areas.