Candidates can benefit from writing mock tests during UPSC preparation as they simulate real exam conditions, promoting effective time management and enhancing the ability to recall information under pressure. These tests help identify strengths and weaknesses in specific subjects or topics, allowing focused revision. Regular mock tests build familiarity with the exam format and types of questions, reducing anxiety on the actual exam day. Additionally, they provide opportunities for peer learning and constructive feedback, contributing to a more comprehensive understanding of key concepts.