This is the complete list of optional subjects for civil services main examination. You have to opt for any one subject. Optional paper consists of two papers of 250 marks each.
- Animal Husbandry & 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
