Among aspirants, the UPSC Civil Services Mains examination is considered the toughest. This is largely due to its comprehensive syllabus, which includes subjects requiring extensive knowledge and critical thinking skills. The examination demands not only factual recall but also analytical abilities and effective presentation of answers. The level of competition is also extremely high, as a large number of candidates compete for limited positions. Aspirants must engage in deep study and consistent practice to navigate the complexities of the Mains examination successfully.