UPSC Prelims exam:
UPSC Prelims examination is conducted for 4 hours( objective-type paper). It consists of two papers of multiple choice questions of maximum 200 marks each from various subjects
UPSC Mains exam:
Candidates who have qualified in the Prelims will further sit for the Mains round. The mains round consists of a written exam, which is followed by a personality test.
In this round, the interviewer assesses the personality of the candidate (Personality Test). This is done to test the mental calibre of the candidate.