The Common Preliminary Examination for Combined Civil Services Examination – II includes General Studies with 75 questions, Aptitude and Mental Ability with 25 questions, and a Language paper in General Tamil or General English with 100 questions. The Main Examination for Group II Services comprises a Tamil Eligibility Test (SSLC level) and General Studies (Degree level). For Group IIA Services, the Main Examination includes the Tamil Eligibility Test, General Studies, General Intelligence and Reasoning (SSLC level), and a Language paper. The General Studies paper for Group IIA is conducted as a Computer Based Test (CBT). Each paper has specific minimum qualifying marks and is designed to test candidates' knowledge and skills across various subjects.