Can I apply for Indian administrative service examination after passing CA course ?/

Yes you can apply for IAS examination after passing CA course with any gradation degree . but if you have not passed graduation degree than you are not eligible to apply for IAS exam .. graduation in degree course is minimum qualification required for Indian administrative service examination..

IAS exam Eligibility Criteria:
To apply for IAS exam You have to pass graduation in any discipline from a well recognized university.

Age limit :
21-30 years as on 1st August of the year of Examination.
OBC candidate age limit : 33 years.
SC/ST have 5 years of age relaxation.

Important dates :
Civil Services Preliminary Exam 2014
Notification Date : 17th May 2014
Last dates for Applications : 16th June 2014
Examination will be held on : 24th August 2014

Civil Services Main Exam 2014
Examination will be held on : 14th December 2014

Syllabus

1. Current events of national and international importance
2. History of India and Indian national movement
3. Indian and World Geography
4. Indian Polity and governance
5. Economic and social development
6. General issues on environmental ecology, bio-diversity and climate change
7. General Science

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

1. Comprehension
2. Interpersonal skills which include communication skills
3. Logical reasoning & analytical ability
4. Decision making & problem solving
5. General mental ability
6. Basic numeracy
7. English language comprehension skills (Class X level)

IAS Mains Syllabus for UPSC Civil Services Exam
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