Hello Aspirant,

Indian Administrative service (IAS) is considered one of the most prestigious yet toughest position to qualify for. To become an IAS officer one must qualify in the civil services examination conducted by the union public service commission (UPSC) of India. This exam is conducted every year and recruits candidates to 25 different services including IAS, IPS, IFS, IRS and so on. This exam is conducted in three steps/tiers.

1. Preliminary examination
2. Civil services main examination
3. Interview

For preliminary examination there will be two papers.

Paper 1 (100 questions of 200 marks in total in 2 hours)

• History
• Geography
• Polity
• Economics
• General knowledge
• Current affairs

Paper2 (2 hours, 80 questions, 200 marks)

• Mathematics/Quantitative aptitude
• Reasoning ability
• English language proficiency

You can find further information on the civil services examination in the link provided below

https://www.google.com/amp/s/competition.careers360.com/exams/upsc-civil-services-exam/amp

Hope this helps and Good luck