The Ministry of Home Affairs (MHA) conducts every year IB ACIO exam for the post of Assistant Central Intelligence Officer Grade-II Executive in the Intelligence Bureau. The first step to begin preparation for the IB ACIO examination is that the candidates must know the complete IB ACIO Syllabus and Exam Pattern to plan a proper exam strategy for the examination. 

IB ACIO Syllabus and Exam Pattern 2025

The notification for IB ACIO 2025 exam has been released for 3717 ACIO Grade II/ Executive posts. To ace the IB ACIO Grade-II/ Executive Exam, it is necessary to know the Exam pattern and detailed syllabus of this exam. Let’s understand the IB ACIO Syllabus and Exam Pattern 2025 one by one. 

IB ACIO Syllabus 2025- Highlights
Organization NameIntelligence Bureau (IB)
Exam Conducting Body NameMinistry of Home Affairs (MHA)
Exam NameIB ACIO Grade-II/ Executive Examination 2025
Post NameACIO Grade II/ Executive
Vacancies3717
CategorySyllabus
Total No. of Questions Tier 1 - 100 questions
Total MarksTier 1 - 100 marks
Tier 2 - 50 marks
Tier 3- 100 marks
Type of Questions Tier 1 - Objective Type
Tier 2 - Descriptive Type
Selection ProcessTier 1- Written Exam
Tier 2- Written Exam
Tier 3- Interview
Official Website www.mha.gov.in or www.ncs.gov.in

IB ACIO Recruitment 2025 Notification Out for 3717 Vacancies- Click to Check

IB ACIO Selection Process 2025

The IB ACIO Tier 1 exam is a written, objective-type exam. The candidates who will clear the Tier 1 exam will then appear in the Tier 2 exam. The Tier 2 exam is descriptive and to pass the Tier 2 exam, candidates are required to score at least 33% marks (as per the rule). Based on Tier 1 and Tier 2 exam performances, candidates will be called for an interview for the final round of selection. The selection process for the Intelligence Bureau ACIO 2025 exam is divided into three phases, as discussed below. 

IB ACIO Exam Pattern 2025

  1. The questions in Tier 1 Exam will be Objective-type questions, and in Tier 2, the questions will be descriptive.
  2. For each incorrect answer in IB ACIO Tier 1, there will be a negative marking of ¼ mark.
  3. The time duration for each tier is 1 hour.
IB ACIO Tier-1 Exam Pattern 2025
SubjectsNo. of QuestionsMarksDuration
Current Affairs20201 Hour
General Studies2020
Numerical Aptitude2020
Reasoning and Logical Aptitude2020
English Language2020
Total100100 
IB ACIO Tier-2 Exam Pattern 2025
PapersMaximum MarksTime
Essay Writing201 Hour
English comprehension10
Long answer type questions 
(2 questions of 10 marks each on Current Affairs, Economics, Socio-political issues etc)
20
Total 50

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IB ACIO Syllabus 2025

Check the IB ACIO Syllabus 2025 for Quantitative Aptitude, General Awareness & General Studies, Logical/Analytical/Numerical Ability & Reasoning, and English Language from the section below and prepare for the IB ACIO Exam 2025. 

IB ACIO Syllabus for Quantitative Aptitude

Quantitative Aptitude
Number systemsPercentages
MensurationRation and Time
AveragesProfit and loss
Fundamental Arithmetical OperationsComputation of whole numbers
Use of tables and graphsDecimals
Relationship between numbersOperations Research & Linear Programming
Differential GeometryDynamics
Essential MathematicsCalculus
Real AnalysisFundamental Arithmetical Operations
Computation of Whole numbersTime and Distance
Ration and ProportionInterest
DiscountAlgebra
Differential EquationsStatistics
Time and WorkFractions
Analytical GeometryStatistics
LCM and HCFRatios
PercentageFactoring
AgeProfit and Loss
Missing NumbersAverage
Prices and Expenditure ProblemsSimple and Compound Interest
Time and WorkMensuration
VolumeTime and Distance
FractionsSeries Completion

IB ACIO Syllabus for General Studies

General Studies
HistoryPhysics
BiologyCurrent Affairs
Science & TechnologyStatic GK
Indian Polity & ConstitutionEconomy & Finance
GeographyChemistry

IB ACIO Syllabus for Numerical Ability & Reasoning

Numerical Ability & Reasoning
Alphanumeric seriesReasoning Analogies
Artificial LanguageBlood Relations
CalendarsCause and Effect
ClocksCoding-Decoding
Data SufficiencyDecision Making
DirectionsInput-Output
Odd One OutPuzzles
Order & RankingStatement and Assumptions
Statement and Conclusions-

IB ACIO Syllabus for English Language

English Language
Spellings CorrectionOne Word Substitution
ImprovementVerbal Comprehension Passage
AdjectivesDetecting Mis-spelt words
Idioms and PhrasesPassage
VerbsClauses
Fill in the blanksSpot the error
Synonyms/AntonymsVocabulary
GrammarSentence Structure

IB ACIO Tier 2 Exam

  1. Exam Mode- Offline (Pen and Paper-based)
  2. Type of Paper- Descriptive
  3. Total Marks- 50 marks [Essay (20 marks); English comprehension (10 marks) & Long answer type questions (20 marks)]
  4. Duration- 1 hour (60 minutes)
  5. Medium- English
  6. Topics- There is no such list of topics released; however, it is expected that the topic can be related to current events. The topics could be related to Current Affairs, Economics, Socio-political issues, etc

Tips for IB ACIO Tier 2 Preparation:

Essay Writing:

  1. Candidates must practice writing essays of around 400 to 500 words and analyse the time consumed.
  2. More focus should be on the structure of writing an essay, following the format: Introduction, Body, Conclusion.
  3. Stick to facts and balanced arguments.

Long Answer Type Questions:

  1. Do practice to long answers with meaningful information required.
  2. Maintain the tone and meaning while practising long answer writing.

English Comprehension:

  1. Candidates can excel in this part by practising reading editorials and answering inference-based questions.
  2. Candidates must focus on Time management in this section.

IB ACIO Interview Process

Candidates who will be qualified in both Tier 1 and Tier 2 exams will be selected for the final round i.e. interview round. The IB ACIO interview round comprises 100 marks. Candidates appearing in interviews may be subject to the Psychometric/Aptitude Test, which will be a part of the interview.

InterviewMaximum Marks
Interview100
Important Links
IB ACIO Grade 2/Executive SalaryIB ACIO Cut Off [Previous Year]
IB ACIO Previous Year Question PaperIB ACIO Online Coaching 
IB ACIO Eligibility 2025IB ACIO Mock Test
FAQs

Ans. IB ACIO Paper 1 Syllabus covers various topics from General Studies, Qualitative Aptitude, General Awareness, Analytical ability, and English Language.

Ans. The selection process includes three stages- Tier 1 (Phase-1), Tier 2 (Phase-2), and Interview (Phase-3)