Preparation strategies for the Prelims and Mains of UPSC differ significantly due to their formats and content focus. Prelims require knowledge across a broad spectrum, emphasizing general awareness and quick decision-making under time constraints, making practice tests crucial. In contrast, Mains necessitates a deep understanding of specific topics, critical analysis, and structured answer writing. Thus, Mains preparation involves comprehensive studying and revision of the syllabus, while Prelims focus on retaining facts and mastering multiple-choice questions. A tailored approach for each stage is essential for effective preparation.