UPSC CSE Previous Years Questions till 2020 : Mains 1. Essay (till 2020) 2. Ethics (till 2020) 3. Economy (till 2020) 4. Indian History (till 2020) 5. Indian Polity (till 2020) 6. Geography (till 2020) 7. International Relations (till 2020) 8. Security (till 2020) 9. Indian Society (till 2020) 10. Social Justice (till 2020) 11. Science & Technology (till 2020) 12. Environment & Disaster Management (till 2020) 13. Governance (till 2020) Prelims 1. Economy Prelims 2011-2020 Questions 2. History Prelims 2011-20 Questions 3. Geography Prelims 2011-20 Questions 4. Indian Polity Prelims 2011-20 Questions 5. Environment Prelims 2011-20 Questions 6. Science & Technology Prelims 2011-20 Questions 7. International Relations Prelims 2011-20 Questions