The UPSC Main Examination includes various types of General Studies papers, typically categorized into four distinct subjects. These papers cover a wide array of topics including Indian history, geography, governance, economic development, and environmental studies. Each paper is designed to evaluate candidates' understanding of theoretical knowledge, practical applications, and current issues affecting India. Additionally, candidates are assessed on their analytical skills and ability to integrate knowledge across different domains, ensuring a holistic understanding of subjects relevant to civil service responsibilities. This comprehensive approach is central to the examination format.