Yes, there are limitations on the number of attempts for the UPSC exams. General category candidates can attempt the exams a maximum of six times, while other categories such as OBC have a limit of nine attempts. Candidates from the Scheduled Castes (SC) and Scheduled Tribes (ST) have no limits on the number of attempts until they reach the age limit. Additionally, there are also age restrictions that vary across different categories. Understanding these limitations is crucial for aspirants as they plan their preparation strategy and timing for the examination.