IOCL Executive Syllabus 2026 PDF Download

IOCL Executive Syllabus 2026 PDF Download

Recruitment Overview

Exam Pattern

The official exam pattern regarding the number of questions, total marks, duration, and negative marking has not been specified in the released syllabus documents.

Subject-wise Syllabus

General Aptitude Syllabus (All Posts)

This section is mandatory for all candidates across all grades and disciplines.

• Verbal Ability of English Language: Basic English grammar (tenses, prepositions, articles, adjectives, conjunctions, verb-noun agreement), basic vocabulary, idioms, phrases, reading comprehension, and narrative sequencing.
• Quantitative Aptitude: Data interpretation (bar graphs, pie charts, 2D/3D plots, maps, tables), numerical computation (ratios, percentages, powers, exponents, logarithms, permutations, combinations, series), mensuration, geometry, elementary statistics, and probability.
• Logical Reasoning: Deduction and induction, analogy, numerical relations, transformation of shapes (translation, rotation, scaling, mirroring, assembling, grouping), paper folding, cutting, and 2D/3D patterns.

Grade E0 (Diploma Posts) Domain Syllabus

Diploma Electrical

• Electric Generation Systems, Circuit Theory, Electrical Machines, Electronic Devices and Circuits, Power Electronics, Electrical and Electronic Measurements, Digital Electronics, Transducers and Signal Conditioners, Power Transmission and Distribution, Microcontroller/PLC/Microprocessor, Energy Auditing and Conservation, Electrical Properties of Materials, Machine Controller, Control Systems, Signals and Systems, Illumination Practices, Building Electrification, and Renewable Energy Power Plants.

Diploma Mechanical

• Basic Mechanical Engineering, Computer Aided Machine Drawing, Material Science and Engineering, Fluid Mechanics and Hydraulic Machinery, Manufacturing Engineering, Thermal Engineering, Measurements & Metrology, Strength of Materials, Advanced Manufacturing Processes, Theory of Machines & Mechanisms, Industrial Engineering & Management, Design of Machine Elements, Production and Operations Management, and Pneumatic Tools and System.

Diploma Safety

• Industrial Safety: Fundamentals, laws, SMS, HIRA, PPE, Emergency Response, and Behavior-Based Safety (BBS).
• Hazards & Risk: Physical, chemical, biological, ergonomic hazards, fire/explosion, electrical safety, LOTO, and radiation.
• Fire Safety: Classification of fires, detection systems, extinguishers, suppression systems, and evacuation.
• Electrical & Mechanical Safety: Protective devices, earthing, preventive maintenance, vibration analysis, and FMEA.
• Chemical & Construction Safety: SDS, spill management, toxicology, waste disposal, excavation, and scaffolding.
• Legislation: The Factories Act 1948, Environment Protection Act 1986, Petroleum Act, Explosives Act, and BOCW Act.

Grade A0 (Quality Control) Domain Syllabus

• Testing & Analytical Equipment: HPLC, GC, UV-VIS, XRF, Micro-coulometer, CHNS, ICP, AAS, FTIR, Karl Fischer Titration, and DSC.
• Chemistry Techniques: Titration types, Lambert Beer Law, metal analysis, repeatability, and CRMs.
• Petroleum Properties: Flash/Pour/Aniline Point, Viscosity Index, Octane/Cetane Number, Density, and Distillation.
• Standards & Water Chemistry: ASTM, ISO, IS standards, ISO/IEC 17025, and boiler water chemistry.
• Basic & Organic Chemistry: SI units, solution chemistry, thermodynamics, catalyst chemistry, hydrocarbons, and functional groups.
• Laboratory Safety: Chemical storage, PPE, and glassware handling.

Grade A (Engineering, Law & Management) Domain Syllabus

Chemical Engineering

• Engineering Mathematics, Process Calculation & Thermodynamics, Fluid Mechanics & Mechanical Operations, Chemical Reaction Engineering, Instrumentation & Process Control, Plant Design and Economics, Heat Transfer, Mass Transfer, and Chemical Technology.

Electrical Engineering

• Engineering Mathematics, Electrical Machines, Power Systems, Control Systems, Electric Circuits, Electromagnetic Fields, Signals and Systems, Electrical and Electronic Measurements, Analog and Digital Electronics, and Power Electronics.

Instrumentation

• Engineering Mathematics, Control Systems, Analog/Digital Electronics, Electricity and Magnetism, Electrical Circuits and Machines, Signals and Systems, Measurements, Sensors, and Optical Instrumentation.

Mechanical Engineering

• Engineering Mathematics, Engineering Mechanics, Mechanics of Materials, Theory of Machines, Vibrations & Machine Design, Fluid Mechanics, Heat Transfer, Thermodynamics, Power Engineering, and Industrial Engineering.

Electronics and Communication Engineering

• Engineering Mathematics, Networks, Signals and Systems, Electronic Devices, Analog/Digital Circuits, Control Systems, Communications, and Electromagnetics.

Civil Engineering

• Engineering Mathematics, Structural Engineering, Geotechnical Engineering, Water Resources Engineering, Environmental Engineering, Transportation Engineering, and Geomatics Engineering.

Computer Science and IT

• Engineering Mathematics, Digital Logic, Computer Organization and Architecture, Programming and Data Structures, Algorithms, Theory of Computation, Compiler Design, Operating System, Databases, and Computer Networks.

Law

• Substantive Laws: Indian Contract Act, Specific Relief Act, Sale of Goods Act, Transfer of Property Act, Companies Act, IBC 2016, Constitution of India (Articles 32 & 226), DPDP Act 2023, Competition Act, Consumer Protection Act, RTI Act, and SEBI guidelines.
• Procedural Laws: Arbitration & Conciliation Act, Mediation Act 2023, CPC 1908, Bharatiya Nagarik Suraksha Sanhita 2023, and Bharatiya Sakshya Adhiniyam 2023.
• Minor Laws: Limitation Act 1963 and Commercial Courts Act 2015.

MBA (Marketing Management)

• Core Marketing: Concepts, Strategy (Porter, SWOT, GTM), Market Research, Consumer Behaviour, and Segmentation/Targeting/Positioning.
• Decisions: Product Life Cycle, Pricing Strategies, Services Marketing (SERVQUAL), and Distribution/Logistics.
• Promotion & Brand: IMC, Advertising, Brand Equity, and Digital Marketing (SEO/SEM).
• Specialized Marketing: Energy and Fuel Markets, Forecourt Retailing, Non-Fuel Retail (NFR), and International Marketing.
• Strategic Management: PESTEL, Porter's 5 Forces, BCG/GE McKinsey Matrix, and McKinsey's 7S model.

How to Download Syllabus

1. Visit the official IOCL website.
2. Navigate to the Careers or Latest Job Openings section.
3. Locate the recruitment notification for Executive posts (Grade A, A0, E0).
4. Click on the specific syllabus link (General Aptitude or Domain Knowledge) for your respective grade.
5. Save the PDF file to your device for offline access.

Frequently Asked Questions

Q1. What is the IOCL syllabus 2026? The syllabus consists of two parts: a common General Aptitude section (Verbal, Quantitative, and Logical Reasoning) and a post-specific Domain Knowledge section based on the candidate's grade and discipline.

Q2. What is the exam pattern for IOCL 2026? The specific number of questions, marks, and duration have not been released in the syllabus document. Candidates must check the official recruitment notification for these details.

Q3. Is the General Aptitude syllabus the same for all IOCL posts? Yes, the General Aptitude syllabus is common for all Grade E0, A0, and Grade A posts.

Q4. Is the Domain Knowledge syllabus the same for every post? No, the Domain Knowledge syllabus is strictly based on the post and grade. For example, the syllabus for Diploma Electrical (E0) differs from Electrical Engineering (A).

Q5. Where can I download the IOCL syllabus PDF? The syllabus PDFs can be downloaded from the official IOCL website or via the links provided in the Important Links table below.