Tamil Nadu Public Service Commission conducts examination for varies levels of recruitment to different departments of Tamil Nadu Government

Qualification and test pattern for each of the popular Group Exams is given below
Parameters Group I Group II Group IV VAO
Qualification Graduate Graduate 10th 10th
Age Limit 21 -35 yrs 18-30yrs 18-30yrs 21-30yrs
Levels Preliminary & Main Preliminary & Main Only one Only one
Syllabus General Studies &
General Studies +
+ Aptitude
General studies +
+ Aptitude
General Studies +Lang.(Tamil/English)
+Aptitude + Village Administration
No. of. Question 150+50 75+100+25 75+100+25 75+80+20+25
Test Duration 3 hrs 3 hrs 3 hrs 3 hrs

C-CAT conducts following preparatory Courses:
Group  1                -              6 Months Program
Group  2                 -             5  Month program
Group 4/VAO          -             4 Month Program

A Comprehensive program that runs for one year enables a student to write all the Group Examinations that is scheduled for one year period from the date of enrolment

Students get nine books and classroom material. Before every examination Section tests and Full Length Tests are conducted at the standard required for the group.

The following are the portions covered in the TNPSC GROUPS

A. General Studies
S. NO General Science Social Studies Aptitude Current Events
1 Physics History Mathematics Science
2 Chemistry Geography Reasoning Politics
3 Botany Polity Statistics Arts 
4 Zoology Economics   Trade
5   Commerce   Commerce and others
B. General Tamil and English

1 Grammar
2 Literature
3 Authors and their Literary Works
The highlights of the C-CAT is
A. Book materials -- for General Studies & General Language
B. Model Papers --- for Tamil medium & English medium
C. Course duration--  Till exam
D. Course material  --- English medium & tamil medium
E. Batches  --- Morning ,  Evening &  Weekend