IAS Indian Administrative Services

The Indian Administrative Services (IAS) Exam is conducted by UPSC every year. I also want to apply for this year, so tell me how I can do online registration for this Exam? Give procedure to do online registration. What is fee for one applicant (General Category) for Indian Administrative Services (IAS) Exam?

Can you provide me the list of optional subjects for IAS (Indian Administrative Services) - (Mains) Exam conducted by UPSC (Union Public Service Commission)?

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The UPSC (Union Public Service Commission) IAS (Indian Administrative Services) Exam is conducted in three phases:

Phase 1: Civil Services (Preliminary) Examination (Objective Type)
Phase 2: Civil Services (Mains) Examination (Descriptive Type)
Phase 3: Personal Interview (Personality Test)

Preliminary Examination
The Preliminary Examination is composed of two components:
1) General Studies
2) Civil Services Aptitude Test (CSAT)

Mains Examination

Optional Subjects for Civil Service (Mains) Exam:

Optional Subjects for Social Science
Economics
Geography
Indian History
Philosophy
Political Science
Psychology
Public Administration
Sociology
Law

Optional Subjects for Science
Agriculture
Animal Husbandry and Veterinary Science
Botany
Chemistry
Mathematics
Statistics
Medical Science
Physics
Zoology
Anthropology
Geology

Optional Subjects of Engineering
Civil Engineering
Electrical Engineering
Mechanical Engineering

Optional Subjects of Commerce and Management
Commerce
Management

Optional Subjects for Indian Languages
Assamese
Bengali
Bodo
Dogri
Gujarati
Hindi
Kannada
Kashmiri
Konkani
Maithili
Malayalam
Manipuri
Marathi
Nepali
Oriya
Pali
Persian
Punjabi
Sanskrit
Santali
Sindhi
Tamil
Telugu
Urdu

Optional Subjects for Foreign Languages
English
Arabic