IB ACIO Exam Analysis 2025 1st Shift 18 September, Check Difficulty Level Subject Wise

The first shift of the IB ACIO Tier 1 Exam 2025 on 18th September was conducted smoothly across multiple exam centers. Thousands of aspirants appeared for the recruitment of 3,717 Assistant Central Intelligence Officer (ACIO) Grade II/Executive posts under the Intelligence Bureau. This detailed exam analysis provides insights into the difficulty level, section-wise question distribution, and good attempts to help candidates evaluate their performance and guide those appearing in the upcoming shifts.

IB ACIO Exam Analysis 2025 1st Shift 18 September

The IB ACIO 2025 Tier 1 Exam (Shift 1, 18 September) was conducted successfully across various centers, with a large number of candidates appearing for the recruitment of 3,717 vacancies of ACIO Grade II/Executive posts. The Tier 1 examination was held for a total of 100 marks, covering sections from Current Affairs, General Studies, Numerical Aptitude, Reasoning Ability, and English Language. This detailed section-wise analysis provides insights into the exam pattern, difficulty level, and good attempts, helping candidates assess their performance and prepare better for the upcoming shifts.

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IB ACIO Exam Analysis 2025 Shift 1 – Difficulty Level

Based on the feedback of candidates, the overall difficulty of the paper was moderate. While Reasoning and English were easier and scoring, General Studies and Numerical Aptitude were slightly more time-consuming.

Difficulty Level – Section-Wise

IB ACIO Exam 2025 Shift 1 – Good Attempts

The number of good attempts is an important factor in assessing safe attempts for Tier 1. Candidates found Reasoning and English easier, while General Studies required deeper conceptual knowledge.

IB ACIO Exam Analysis 2025 – Section-wise Review

1. Current Affairs

The Current Affairs section was focused on recent events, awards, reports, and international organizations. Most questions were fact-based and could be solved quickly.

Topics Asked:

• Bharat Ratna Award – 2 Questions
• G20 Presidency 2025
• UN Sustainable Development Goals
• New Education Policy Updates
• International Sports Events

2. Quantitative Aptitude

The Quantitative Aptitude section was of moderate difficulty. Arithmetic-based problems dominated, along with a few tricky questions from Algebra and Geometry.

Topics Asked:

• Simple & Compound Interest
• Percentage & Profit-Loss
• Time, Speed & Distance
• Algebraic Equations
• Geometry (Triangle & Circle based)
• Data Interpretation – Table

3. Reasoning Ability

Reasoning was the easiest section of the paper and highly scoring. Most candidates managed to attempt maximum questions with accuracy.

Topics Asked:

• Seating Arrangement (Linear & Circular)
• Coding-Decoding
• Blood Relations
• Series (Number & Alphabet)
• Direction & Distance
• Syllogism

4. English Language

The English section was easy to moderate and direct. Vocabulary-based questions and grammar rules were straightforward.

Topics Asked:

• Reading Comprehension (Environment theme)
• Synonyms/Antonyms (e.g., “Resilient”)
• Error Spotting
• Cloze Test
• Active-Passive Voice
• Idioms & Phrases

5. General Studies

General Studies was moderate to difficult with questions requiring conceptual clarity. History and Polity had higher weightage compared to Geography and Economy.

Topics Asked:

• Fundamental Rights & DPSP
• 1857 Revolt Leaders
• Harappan Civilization Sites
• Indian Economy – Inflation & GDP
• Greenhouse Gases & Climate Change
• Constitutional Amendments
• National Parks & Biosphere Reserves

IB ACIO Exam Analysis – Shift Timing

The IB ACIO 2025 Tier 1 Exam is being held in three shifts daily. Candidates must carefully check their reporting time to avoid last-minute hassle.

IB ACIO 2025 Exam Pattern

The Tier 1 paper carries 100 marks across five sections – each having equal weightage. The duration of the exam is 1 hour with negative marking of 0.25 marks for every incorrect response.