The weightage of the prelims exam in the overall UPSC selection process is critical, as it serves as a screening test to filter candidates for the Mains exam. The prelims consist of two papers, each carrying equal marks, contributing significantly to the selection. However, while marks obtained in the prelims are not counted towards the final merit list, qualifying is mandatory for further progression. Therefore, effective performance in the prelims is vital, serving as a foundational step that determines whether candidates can showcase their knowledge and skills in subsequent phases.