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IB (Intelligence Bureau)

There are 3 stages that a candidate needs to qualify to get recruited as an Assistant Central Intelligence Officer with the Intelligence Bureau of India.

The 3 stages of Exam will be as follows:

  • 1. Preliminary Exam (Tier I)
  • 2. Mains Exam (Tier II)
  • 3. Interview

The Preliminary & Mains Exam will be written and the third stage will be the Interview.

IB Exam Pattern for Prelims – Tier I

The Tier I Stage will be a written exam of 1 hour. This exam will have four different sections consisting of 100 marks.

Subject No of Qs Max Marks Duration
General Awareness 25 25 1 Hour
Quantitative Aptitude 25 25
Logical/Analytical Ability 25 25
English Language 25 25
Total 100 100
  • A total of 100 questions will be asked in this exam.
  • This is an Objective Test.
  • There is Negative Marking of 0.25 marks for each wrong answer.
  • A candidate is allowed to appear for Tier II only after qualifying Tier I.

IB Exam Pattern for Mains – Tier II

The Ter II exam will be of 50 marks and will consist questions from two subjects.

Subject Max marks Time
Essay (1 Topic) 30 1 Hour
English Comprehension & Precis 20
Total 50


  • The Mains Exam will be of 50 marks.
  • This is a Written Descriptive Paper.
  • The Minimum Cut off for Tier II is 33%.

IB Exam Pattern for Interview

  • The Final stage i. e the Interview will consist of 100 marks.
  • On the basis of their combined performance in Tier-I and Tier-II, the candidates will be short listed for the Interview
  • The final selection of the candidates will be based on the combined score of Tier I, Tier II & Interview