Here is a list of optional subjects that were available at the time of my last update:
- Agriculture
- Animal Husbandry and Veterinary Science
- Anthropology
- Botany
- Chemistry
- Civil Engineering
- Commerce and Accountancy
- Economics
- Electrical Engineering
- Geography
- Geology
- History
- Law
- Management
- Mathematics
- Mechanical Engineering
- Medical Science
- Philosophy
- Physics
- Political Science and International Relations
- Psychology
- Public Administration
- Sociology
- Statistics
- Zoology
Candidates are required to choose one optional subject from the list. Keep in mind that the UPSC may revise the list of optional subjects, so it’s essential to refer to the latest official notification or the UPSC website for the most accurate information.