In the UPSC prelims, candidates can expect questions that cover a wide range of subjects, including current affairs, history, geography, polity, economics, environment, and general science. Understanding and interpreting graphs, maps, and data may also be part of the exam. Questions can be direct or analytical, requiring aspirants to apply conceptual knowledge to real-world scenarios. Candidates should focus on personality development and strategic thinking to approach each question effectively and manage their time during the exam.