The Intelligence Bureau (IB) conducted the Tier 1 Exam of Assistant Central Intelligence Officer (ACIO) Grade II/Executive on 18th September 2025, Shift 2 across multiple exam centers in India. Thousands of aspirants appeared in this session, competing for 3,717 vacancies. The Tier 1 paper is one of the most important stages of the recruitment process and plays a key role in shortlisting candidates for the next stage. This article presents a complete analysis of the IB ACIO Tier 1 Exam (Shift 2), including section-wise difficulty level, good attempts, and insights into the exam trend.
IB ACIO Exam Analysis 2025 2nd Shift 18 September
The IB ACIO 2025 Tier 1 Exam (Shift 2, 18 September) was held across various centres for the recruitment of 3,717 vacancies of ACIO Grade II/Executive. The paper carried 100 marks with questions from Current Affairs, General Studies, Numerical Aptitude, Reasoning Ability, and English Language.
IB ACIO Exam Analysis 2025 Shift 2 – Difficulty Level
The overall level of the exam in Shift 2 was reported as Easy to Moderate. While some sections were straightforward, others demanded conceptual clarity and quick problem-solving ability.
Difficulty Level – Section-Wise
| Subjects | Difficulty Level |
|---|---|
| Current Affairs | Moderate to Difficult |
| General Studies | Easy to Moderate |
| Reasoning Ability | Easy |
| Numerical Ability | Easy to Moderate |
| English Language | Easy to Moderate |
| Overall | Moderate |
IB ACIO Exam 2025 Shift 2 – Good Attempts
The number of good attempts helps candidates understand their standing in the competition. Based on student feedback, here is the expected range of good attempts:
| Subjects | Good Attempts |
|---|---|
| Current Affairs | 10–11 |
| General Studies | 12–13 |
| Reasoning Ability | 18-20 |
| Numerical Ability | 17-18 |
| English Language | 18-19 |
| Overall | 75–81 |
IB ACIO Exam Analysis 2025 – Section-wise Review
1. Current Affairs
The Current Affairs section focused primarily on events from the last 6–8 months, with special emphasis on government schemes, international summits, defense exercises, awards, and sports.
2. Quantitative Aptitude
The Numerical Aptitude section was Easy to Moderate. Topics like arithmetic, percentages, ratio, profit and loss, SI & CI, and data interpretation were covered.
3. Reasoning Ability
The Reasoning section was relatively easy to moderate. Questions were asked on puzzles, seating arrangements, coding-decoding, syllogism, and blood relations. Most candidates found this section scoring, provided they managed time effectively.
4. English Language
The English section was easy to moderate and direct. Vocabulary-based questions and grammar rules were straightforward.
5. General Studies
This section tested knowledge of History, Polity, Geography, Economy, and General Science. Questions were conceptual, with a few tricky ones requiring in-depth understanding.
IB ACIO Exam Analysis – Shift Timing
The IB ACIO 2025 Tier 1 Exam is being conducted in three shifts each day. Candidates should check their reporting time properly to reach the centre on time and avoid any last-minute problems.
| Shift | Reporting Timing | Exam Timing |
|---|---|---|
| Shift 1 | 7:30 AM | 9:00 – 10:00 AM |
| Shift 2 | 10:30 AM | 12:00 – 1:00 PM |
| Shift 3 | 1:30 PM | 3:00 – 4:00 PM |
IB ACIO 2025 Exam Pattern
The Tier 1 exam is an objective-type paper with 100 questions for 100 marks. Each correct answer carries 1 mark, while 0.25 marks are deducted for every wrong attempt. The total duration of the exam is 1 hour.
| Section | Marks | Duration |
|---|---|---|
| Current Affairs | 20 | 1 Hour |
| Numerical Aptitude | 20 | |
| Reasoning & Logical Apt. | 20 | |
| English Language | 20 | |
| General Studies | 20 | |
| Total | 100 |
| Also Check | |
| IB ACIO Recruitment 2025 | IB ACIO Apply Online 2025 |
| IB ACIO Salary 2025 | IB ACIO Previous Year Papers |
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