Mock tests play a pivotal role in UPSC exam preparation by simulating the actual examination environment. They enable candidates to assess their knowledge and understanding of the syllabus comprehensively. Taking regular mock tests helps identify strengths and weaknesses, allowing aspirants to modify their study strategies accordingly. Additionally, they build test-taking skills, such as time management and the ability to think under pressure. Through analysis of results, candidates can refine their approach to answering questions effectively, ultimately leading to improved confidence during the actual examination.