I want to know the Civil services examination paper pattern, will you please tell me the same???????

Civil services examination has two stages Prelims and Mains which are then followed by an interview.

Preliminary Examination
The Preliminary Examination has following two papers:

General Studies (150 marks)
Some optional subject (300 marks)

General Studies Paper covers following topics:
Indian Polity & Economy
History of India including Indian National Movement
Indian and World Geography
Current Affairs of National and International Importance
General and day-to-day Science
Mental Ability and Basics of Statistics etc

The mains examination has following optional subjects:
Agriculture
Animal Husbandry and Veterinary Science
Botany
Chemistry
Civil Engineering
Commerce
Economics
Electrical Engineering
Geography
Geology
Indian History
Law
Mathematics
Mechanical Engineering
Medical Science
Philosophy
Physics
Political Science
Psychology
Public Administration
Sociology
Statistics
Zoology