Hello Nitish. List of optional subjects:-

• Agriculture
• Management
• Animal Husbandry & Vetinary Science
• Mathematics
• Anthropology
• Mechanical Engineering
• Botany
• Medical Science
• Chemistry
• Philosophy
• Civil Engineering
• Physics
• Commerce & Accountancy
• Political Science & International Relations
• Economics
• Psychology
• Electrical Engineering
• Public Administration
• Geography
• Sociology
• Geology
• Statistics
• Indian History
• Zoology
• Law