General Studies Paper I in the UPSC Mains covers a wide array of topics including Indian Heritage, Culture, History, and Geography of the world and India. It examines cultural practices, historical events, and geographical aspects that have shaped the nation. Candidates are assessed on their knowledge of ancient, medieval, and modern history, as well as physical and human geography. This comprehensive coverage aims to ensure that candidates possess a well-rounded understanding of India's socio-cultural dynamics and geographical realities.