1. Group I Services:
Includes prestigious positions like Deputy Collector, Sub-Registrar, and Assistant Commissioner (Commercial Taxes).
Requires in-depth knowledge of various subjects like Tamil, English, General Knowledge, History, Economics, and Law.
2. Group II Services:
Encompasses various departmental posts like Block Development Officer, Inspector of Police, and District Employment Officer.
Demands a strong understanding of graduation-level subjects relevant to the chosen field, along with General Tamil, English, and General Knowledge.
3. Group IIA Services:
Comprises posts like Sub-Inspector of Police, Assistant Registrar (Cooperatives), and Junior Inspector of Labour.
Primarily focuses on testing knowledge specific to the chosen field along with General Tamil and English.
4. Group III Services:
Offers various positions like Stenographer, Draftsman, and Computer Operator across various departments.
Often emphasizes specific skills like typing, stenography, and computer proficiency, along with basic Tamil and English.
5. Group IV Services:
Includes posts like Clerk, Typist, and Jail Warder.
Primarily tests General Tamil, English, Arithmetic abilities, and basic computer knowledge.