IOCL Senior Officer Syllabus 2025 Out, Download PDF
Neha Tanna5 Sept, 2025
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IOCL Senior Officer Syllabus 2025 consists of two main sections in the Computer-Based Test (CBT). Section I (40 marks) covers General English, Reasoning, and Numerical Aptitude, applicable to all candidates. Section II (60 marks) is based on subject-specific knowledge depending on the chosen subject (such as Chemical, Civil, Mechanical, Electrical, Petroleum, IT, HR, Finance, etc.).
The subject portion includes core technical concepts, industry practices, laws, and modern developments related to each specialization. Overall, the syllabus has a mix of aptitude assessment with in-depth professional knowledge, by making sure candidates are tested on both general competencies and domain expertise.
IOCL Senior Officer Syllabus 2025 Overview
IOCL Senior Officer Syllabus 2025 is divided into two sections: Section I includes General English, Reasoning, and Numerical Aptitude, while Section II focuses on subject-specific knowledge based on the chosen subject of the candidate. This makes sure a balanced evaluation of aptitude and domain expertise. Check the detailed IOCL syllabus below.
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IOCL Senior Officer Syllabus 2025 Overview |
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Section |
Marks |
Content / Subjects |
Details |
|
Section I |
40 |
General English, Reasoning, Numerical Aptitude |
Common for all postcodes (except SO-17) |
|
Section II |
60 |
Subject Knowledge (Post-specific syllabus) |
Varies by subject: Chemical, Chemical Engineering, Civil, Electrical, Mechanical, Petroleum, IT, HR, Finance, Fire & Safety, Public Affairs, Safety & Environment, Geology, Geophysics, Legal, Company Secretary, etc. |
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Total |
100 |
Combination of aptitude + technical/professional knowledge |
Balanced focus on general skills and specialized domain knowledge |
Check: IOCL Engineers Recruitment 2025
IOCL Senior Officer Syllabus 2025 PDF
The IOCL Senior Officer Syllabus 2025 PDF provides candidates with a complete overview for preparing for the exam. The IOCL syllabus is divided into two sections: Section I covers General English, Reasoning, and Numerical Aptitude, while Section II focuses on subject-specific knowledge related to the candidate’s subject.
The IOCL syllabus includes detailed topics for Chemical, Mechanical, Civil, Electrical, Petroleum, IT, HR, Fire & Safety, Finance, Legal, and other fields. This PDF helps candidates understand the exact exam requirements and prepare properly for the exam.
IOCL Senior Officer Syllabus 2025 PDF
IOCL Senior Officer Subject-wise Syllabus
The IOCL Senior Officer Subject-wise Syllabus 2025 covers detailed technical and professional knowledge for each subject, including Chemical, Civil, Mechanical, Electrical, Petroleum, IT, HR, Fire and Safety, and more. Each postcode has a specific syllabus made to check candidates’ domain expertise along with general aptitude. Check the subject-wise details below.
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IOCL Senior Officer Subject-wise Syllabus |
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Post Code and Subject |
Key Subjects / Topics for IOCL Exam |
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CH-02 (Chemical) |
Inorganic Chemistry (Bonding, Lanthanides/Actinides, Organometallics), Organic Chemistry (Mechanisms, Stereochemistry, Polymers, Natural Products), Physical Chemistry (Thermodynamics, Kinetics, Solid State), Analytical Chemistry (Spectroscopy, Chromatography, Microscopy), Green Chemistry, Spectroscopy (NMR, ESR, Raman, MS). |
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CE-03 (Chemical Engg.) |
Process Calculations & Thermodynamics, Fluid Mechanics & Mechanical Operations, Heat & Mass Transfer, Chemical Reaction Engineering, Chemical Technology (Fertilizers, Petroleum, Polymers), Instrumentation & Process Control, Plant Design/Economics/Safety, Engineering Mathematics, Specialized Topics (Biochemical Engg., Nanotech, Pharma). |
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CIV-04 (Civil) |
Building Materials & Construction Chemicals, Geotechnical Engineering, RCC & Steel Design, Bridges & Culverts, Transportation Engineering (IRC Guidelines), Surveying & Levelling (GPS, Total Station), Environmental/Public Health Engg., Estimation & Costing, Project Planning & Management (PERT, CPM), Construction Safety, BIS Codes (IS 456, IS 800, IS 1893). |
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EE-05 (Electrical) |
Circuits & Networks, Electromagnetic Theory, Power Systems & Distribution, Electrical Machines, Control Systems, Power Electronics & Drives, Switchgear & Protection, High Voltage Engineering, Renewable Energy Sources, Electrical Measurements & Instrumentation, Advanced Mathematics, Analog Electronics. |
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ME-09 (Mechanical) |
Theory of Machines & Vibrations, Machine Design (Gears, Bearings, Clutches, Springs), Engineering Mechanics & Materials, Machining & Machine Tools, Metrology & Inspection, Production Planning & Control (PERT, CPM, OR), Fluid Mechanics, Thermodynamics (IC Engines, Boilers, Gas Turbines), Heat Transfer, Turbo Machinery, CAD/CAM, Energy & Environment. |
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PE-06 (Petroleum) |
Petroleum Exploration, Drilling Technology & Well Control, Reservoir Engineering & Simulation, Production Operations (Artificial Lift, Well Servicing), Offshore Drilling Practices, Formation Evaluation (Logging, Well Testing), Enhanced Oil Recovery (EOR), Petroleum Economics, Digital Tools (Python, AI/ML), HSE & Environmental Impact. |
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FS-10 (Fire & Safety) |
Basics of Civil/Mechanical/Electrical/Chemistry, Fire Engineering & Hydraulics, Structural Fire Protection, Fire Dynamics, Fixed Fire Fighting Systems, Fire Laws, Fire Codes & Standards, Industrial Safety, Process Safety, Disaster Management, Risk Assessment. |
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IT-08 (Information Technology) |
Data Structures & Algorithms, DBMS, Operating Systems, Compiler Design, Computer Networks, Software Engineering, Web Development, Cloud Computing, Cybersecurity & Cryptography, Data Mining, AI & ML, Big Data Analytics, Distributed & Parallel Systems. |
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HR-16 (Human Resources) |
Principles of Management, HRM (Recruitment, Training, Compensation, Performance), HRD (Mechanisms, Audit, IHRM), Organisational Behaviour (Motivation, Leadership, Stress), Industrial Relations, Industrial Disputes, Labour Legislation (Factories Act, Mines Act, Contract Labour Act, etc.), Wages & Benefits Laws, Labour Welfare, Labour Market Trends. |
Check: IOCL JE Recruitment 2025
IOCL Senior Officer Exam Pattern 2025
The IOCL Senior Officer Exam Pattern 2025 consists of a Computer-Based Test (CBT) with two sections. Section I (40 marks) includes General English, Reasoning, and Numerical Aptitude, while Section II (60 marks) covers subject-specific knowledge based on the subject selected by the candidates. The exam makes sure both aptitude and domain knowledge of the candidate is tested.
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IOCL Senior Officer Exam Pattern 2025 |
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Section |
Subjects |
Marks |
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Section I |
General English, Reasoning, Numerical Aptitude |
40 |
|
Section II |
Subject Knowledge (subject-specific syllabus) |
60 |
|
Total |
– |
100 |
Check: IOCL Apprentice Recruitment 2025
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IOCL Senior Officer Syllabus 2025 FAQs
What is the exam pattern for the IOCL Senior Officer exam 2025?
Is the IOCL syllabus the same for all subjects?
How detailed is the IOCL subject syllabus 2025?
.Is there any negative marking in the IOCL Senior Officer exam 2025?
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