As per your request here I am sharing the pattern and syllabus of IAS Exam

IAS Exam Pattern and Syllabus

IAS Prelims pattern and Syllabus ---

General Studies Paper I--
Maximum marks : 200
Number of Questions : 100
Total Time : 120 minutes (02 hours)

Syllabus
Current events of national and international importance
History of India and Indian national movement
Indian and World Geography
Indian Polity and governance
Economic and social development
General issues on environmental ecology, bio-diversity and climate change
General Science

General Studies Paper II--
Maximum marks : 200
Number of Questions : 80
Total Time : 120 minutes (02 hours)

Syllabus
Comprehension
Interpersonal skills which include communication skills
Logical reasoning & analytical ability
Decision making & problem solving
General mental ability
Basic numeracy
English language comprehension skills (Class X level)

IAS Mains Pattern and Syllabus --

Paper I (One of the Indian Languages to be selected by the candidate)
Maximum marks : 200

Paper II (English)
Maximum marks : 300

Paper III (Essay)
Maximum marks : 200

Paper IV & V (General Studies)
Maximum marks : 600

Paper VI, VII, VIII, IX (Any two subjects (each having 2 papers) to be selected from the prescribed optional subjects)
Maximum marks : 1200