As you want to get I am providing ONGC Graduate Trainee Written Exam Syllabus

General Awareness:

Current affairs
National and international news
Important date
General knowledge
Current issue
Current Politics issue

Aptitude Test:

Logical Reasoning
Numerical ability
Reading comprehension
Verbal and Non-verbal
DI (Data Interpretation)

Concerned Subject Syllabus:

CSE and IT

Engineering Mathematics
• Mathematical Logic
• Probability
• Set Theory & Algebra
• Combinatorics
• Graph Theory
• Linear Algebra
• Numerical Methods
• Calculus Computer Science & Information Technology
• Digital Logic
• Computer Organization & Architecture
• Programming & Data Structures
• Algorithms
• Theory of Computation
• Compiler Design
• Operating System
• Databases
• Information Systems & Software Engineering
• Computer Networks
• Web Technologies
Electronics & Communication Engineering (ECE)

Subjects Topics
Engineering Mathematics Linear Algebra
Calculus
Differential Equations
Complex Variables
Probability and Statistics
Numerical Methods
Transform Theory
Electronics & Comm. Engg. Networks, Electronic Devices
Analog Circuits
Digital Circuits
Signal & Systems
Control Systems
Communications
Electromagnetics

Mechanical Engineering (ME)

Engineering Mathematics
Linear Algebra
Calculus
Differential Equations
Complex Variables
Probability & Statistics
Numerical Methods
Applied Mechanics & Design
Engineering Mechanics
Strengths of Materials
Theory of Machines
Vibrations
Design
Fluid Mechanics
Thermodynamics
Applications
Engineering Materials
Metal Casting
Forming, Joining
Machining and Machine Tool Operations
Metrology and Inspection
Computer Integrated Manufacturing
Production Planning and Control
Inventory Control
Operations Research
Electrical Engineering (EE)

Subjects Topics
Engineering Mathematics Linear Algebra
Calculus
Differential Equations
Complex Variables
Probability & Statics
Numerical Methods
transform theory
Electrical Engineering
Electric Circuits and Fields
Signals and Systems
Electrical Machines
Power Systems
Control Systems
Electrical and Electronic Measurements
Analog and Digital Electronics
Power Electronics and Drives
Civil Engineering

Subjects Topics
Engineering Mathematics Linear Algebra
Calculus
Differential Equations
Complex Variables
Probability & Statics
Numerical Methods
Structural Engineering Mechanics
Structural Analysis
Concrete Structure
Steel Structures
Geo Technical Engineering Solid Mechanics
Foundation Engineering
Water Resources Engineering Fluid Mechanics and Hydraulics
Hydrology
Irrigation
Environmental Engineering Water Requirements
Air Pollution
Municipal Solid Wastes
Noise Pollution
Transportation Engineering Highway Planning, Traffic Engineering