Optional Subjects For IAS Prelims

Hello buddy can you here tell me about Optional Subjects For IAS Prelims exam , as I am thiking to appear in this exam in 2016??

[Pathak]

As you asking, I am telling IAS Prelims exam consists of two papers of objective type (multiple-choice questions) carrying a maximum of 400 marks.
The Question Papers (Test Booklets) are set in English & Hindi

General Studies Paper - I 200 Marks

General Studies Paper - II 200 Marks

IAS main exam subjects
Agriculture
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