Chennai Petroleum Corporation Limited (CPCL) will conduct a Computer Based Test (CBT) for recruitment to the post of Junior Engineering Assistant-IV. The CBT will carry 120 marks for 120 questions and will be followed by Document Verification and a Skill, Proficiency and/or Physical Test (SPPT) for shortlisted candidates (1:3 ratio).
The SPPT is strictly qualifying in nature, and final merit will be prepared purely based on CBT performance.
CPCL Recruitment 2026 (60 Posts)
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CPCL JEA Syllabus 2026 (All Streams)
Explore 15 Production units, 18 Mechanical units, 16 Electrical units & 17 Inst. units.
1. CPCL JEA Exam Pattern 2026 – Quick View
| Particular | Details |
|---|---|
| Exam Name | CPCL Junior Engineering Assistant-IV CBT |
| Exam Mode | Computer Based Test (CBT) – Objective MCQs |
| Total Questions | 120 Questions |
| Total Marks | 120 Marks |
| Exam Duration | 2 Hours (120 Minutes) |
| General Aptitude (Part 1) | 50 Questions / 50 Marks |
| Discipline Knowledge (Part 2) | 70 Questions / 70 Marks |
| Question Type | Objective-Type Multiple Choice Questions (MCQs) |
| Negative Marking | ¼ (0.25) mark for each wrong answer |
| Minimum CBT Qualifying Marks | 40% marks in CBT |
| SC/ST/PwBD Relaxation | 5% relaxation (35% marks) for reserved positions |
| Next Stage | Document Verification + Skill/Proficiency Test (SPPT in 1:3 Ratio) |
The official notification confirms that the CBT consists of 50 General Aptitude questions and 70 Discipline Knowledge questions, with a total duration of two hours.
2. CPCL JEA CBT Exam Pattern
The written Computer Based Test has two distinct sections:
Part 1 – General Aptitude (50 Qs / 50 Marks)
The official notification specifies these four broad areas:
- Verbal Ability (English Grammar & Comprehension)
- General Knowledge (Current Affairs, Science & Economy)
- Reasoning / Logical Deduction (Puzzles, Series, Syllogisms)
- Numerical Ability (Arithmetic, Algebra & Data Interpretation)
Part 2 – Discipline Knowledge (70 Qs / 70 Marks)
Questions will test technical diploma engineering concepts based on post applied for:
- Production (CPCL01): Chemical & Petroleum Engineering
- Mechanical (CPCL02): Machine Design & Thermal Power
- Electrical (CPCL03): Machines, Circuits & Switchgear
- Instrumentation (CPCL04): Process Control & PLC Automation
3. Section-Wise Marks & Question Distribution
| Section | Questions | Marks | Weightage (%) |
|---|---|---|---|
| Part A: General Aptitude | 50 | 50 | 41.67% |
| Part B: Discipline Knowledge | 70 | 70 | 58.33% |
| Total CBT Question Paper | 120 | 120 | 100.00% |
Total Exam Time: 120 Minutes. Candidates therefore have an average of approximately 1 minute per question. Because the technical section contains 70 questions, candidates should manage time carefully between aptitude and technical sections.
4. CPCL Negative Marking Scheme & Calculation
There is negative marking in the Computer Based Test. For every incorrect answer:
- Correct Answer: +1.00 Mark
- Incorrect Answer: −0.25 Mark (¼ penalty)
- Unattempted Question: 0.00 Mark
Numerical Calculation Example:
Suppose an applicant attempts 100 questions out of 120:
- Correct Answers: 80 questions × (+1) = 80 marks
- Incorrect Answers: 20 questions × (−0.25) = −5 marks
- Unattempted Questions: 20 questions × 0 = 0 marks
5. CPCL JEA Minimum Qualifying Marks
Candidates must obtain at least the prescribed cut-off percentage in the CBT to be considered for shortlisting:
| Candidate Category | Minimum CBT Qualifying % | Minimum Required Score |
|---|---|---|
| General / EWS / OBC (NCL) | 40% | 48 Marks (out of 120) |
| SC / ST / PwBD (against reserved positions) | 35% (5% Relaxation) | 42 Marks (out of 120) |
Important: Meeting the minimum qualifying percentage does not automatically guarantee selection. Candidates must also score high enough to fall within the 1:3 shortlisting ratio for the SPPT stage.
6. What to Prepare for General Aptitude? (50 Marks)
Verbal Ability
English grammar, parts of speech, vocabulary, synonyms & antonyms, sentence correction, reading comprehension, idioms & phrases, word usage.
General Knowledge
Indian polity, history, geography, economy, general science, last 6 months current affairs, national events, basic hydrocarbon & refinery industry awareness.
Reasoning / Logical Deduction
Analogy, classification, series, coding-decoding, direction test, blood relations, syllogisms, logical statements, puzzles, Venn diagrams.
Numerical Ability
Number systems, percentage, ratio & proportion, averages, profit & loss, time & work, speed & distance, simple/compound interest, basic algebra, data interpretation.
7. Discipline Knowledge Overview (70 Marks)
The 70-mark technical section should be prepared according to the specific post code applied for:
⚗️ Production (CPCL01):
Chemical Process Calculations, Heat Transfer, Mass Transfer (Diffusion & Distillation), Momentum Transfer (Pumps & Compressors), Process Control & DCS, Petroleum Refining Processes, Industrial Safety & ETP.
⚙️ Mechanical (CPCL02):
Strength of Materials, Fluid Mechanics & Pumps, Thermodynamics & Boilers, Manufacturing Processes & Welding, Machine Design, Heat Power, CAD/CAM, Robotics, RAC.
⚡ Electrical (CPCL03):
Electrical Circuit Theory, DC/AC Machines & Transformers, Measurements, Generation & Switchgear, Microcontrollers (8051), PLC Programming, Power Electronics & VFDs, IE Safety Rules.
🔬 Instrumentation (CPCL04):
Electronic Devices, Transducers & Process Transmitters (Temp, Pressure, Flow, Level), Control Valves & PID Tuning, Distributed Control Systems (DCS), PLC, Safety Instrumented Systems (SIS), Robotics.
8. CPCL JEA Multi-Stage Selection Process
The recruitment process sequence progresses through the following official stages:
9. CPCL CBT Examination Centre
10. How to Manage 2 Hours in CPCL CBT?
With 120 questions to attempt in 120 minutes, time discipline is vital:
| Time Window | Target Section & Strategy |
|---|---|
| First 40–45 Minutes | Quick-fire attempt of straightforward General Aptitude (Verbal, GK) and theoretical technical questions. Skip time-consuming math questions for later. |
| Next 55–60 Minutes | Concentrate on technical calculation problems (Thermodynamics, Circuits, Process Calculations) and numerical aptitude questions. |
| Last 15–20 Minutes | Review 'Marked for Review' questions. Attempt only questions where you can eliminate 2+ options. Avoid blind guessing due to −0.25 penalty. |
11. Discipline-Specific Preparation Focus
- Production Candidates: Focus on Process Calculations + Heat Transfer + Mass Transfer + Fluid Mechanics + Process Control + Petroleum Refining.
- Mechanical Candidates: Prioritise Strength of Materials + Fluid Mechanics + Thermodynamics + Manufacturing + Machine Design.
- Electrical Candidates: Prioritise Circuits + Electrical Machines + Measurements + Power Systems + PLC + Power Electronics.
- Instrumentation Candidates: Prioritise Transmitters + Process Control + Sensors + Control Engineering + PLC + Industrial Automation.
12. Key Candidate Takeaways
- CBT has 120 questions for 120 marks with 2 hours duration.
- General Aptitude has 50 questions; Discipline Knowledge has 70 questions.
- There is ¼ (0.25) negative marking for each incorrect response.
- Minimum CBT qualifying requirement is 40% (35% for SC/ST/PwBD against reserved positions).
- CBT shortlisting ratio for SPPT is 1:3.
- SPPT is strictly qualifying in nature; final merit is based purely on CBT score.
- Final appointment is subject to medical fitness.
13. Download Official CPCL Syllabus PDF & Links
| Document / Official Link | Action |
|---|---|
| Official CPCL Detailed Syllabus PDF (7-Page PDF) | Download Syllabus PDF |
| CPCL JEA Subject-Wise Detailed Syllabus Page | View Full Syllabus |
| CPCL Recruitment 2026 Full Notification Post | View Recruitment Hub |
| Online Application Direct Portal | Apply Online |