The UPSC (Union Public Service Commission) examination is a prestigious and rigorous test in India for recruiting candidates into the Civil Services, including the Indian Administrative Service (IAS), Indian Foreign Service (IFS), and Indian Police Service (IPS), among others. It is conducted in three stages:

1. Preliminary Examination: This consists of two objective-type papers — General Studies (GS) and Civil Services Aptitude Test (CSAT). The Preliminary exam tests a candidate’s knowledge of current events, history, geography, polity, and basic aptitude.

2. Main Examination: This is a descriptive test involving nine papers, including essay writing, general studies (four papers), an optional subject (two papers), and one paper on language proficiency. The Main exam assesses a candidate’s in-depth knowledge of various subjects and their ability to articulate and analyze complex issues.

3. Interview (Personality Test): This final stage evaluates a candidate’s personality, suitability for a civil service role, and overall demeanor. It is designed to test the candidate’s mental alertness, leadership qualities, and integrity.

The examination is known for its difficulty and requires comprehensive preparation in diverse areas including general studies, current affairs, and specific optional subjects.