Advanced Course GS Mains 2025 | Starting: 18 October, 1 PM How do you differentiate in the syllabus for GS Subjects for Prelims and Mains of the UPSC Civil Services Examination? The topics may be the same. However, the understanding of subjects from Prelims and Mains perspective is different. Where the Prelims GS paper has an MCQ pattern, the GS Papers of Mains follow a written format which challenges your knowledge, critical & analytical abilities and answers writing skills. Get in-depth knowle