Civil Service Examination is the country wide competitive examination conducted by Union Public Service Commission to recruit candidates for various services of the Government Of India.It is regarded as the most toughest examination in the world and therefore termed as "Mother Of All Exams".The examination is conducted in 3 tiers. Tier 1 : preliminary examination,it is a qualifying paper, consisting of 2 paper of 200 marks each. both the papers are objective type.
Tier 2 : mains examination, consisting of 5 papers,each carrying 250 marks
Tier 3 : interview or oral test for 275 marks
