IOCL Junior Engineer / Officer Recruitment 2025 – Indian Oil Corporation Limited (IOCL) has released the notification for Junior Engineer/Officer Recruitment 2025 (Advt. No: IOCL/CO-HR/RECTT/2025/02). Eligible Diploma Engineers can apply online for posts in Chemical, Mechanical, Electrical, and Instrumentation disciplines. The online application starts from 12 September 2025 and ends on 28 September 2025. Check details on eligibility, age limit, fees, syllabus, vacancy, exam dates, and apply online for IOCL Junior Engineer Recruitment 2025. Stay updated with govt jobs, apply online, vacancy notification, and Sarkari result updates. For easy to understand the notification details and simplified job details, please visit GovtJobLink.com.
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Indian Oil Corporation Limited (IOCL) – Junior Engineer/Officer Recruitment 2025
IOCL Junior Engineer / Officer Recruitment 2025 –Advt. No: IOCL/CO-HR/RECTT/2025/02
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IOCL Junior Engineer / Officer Recruitment 2025 : Important Dates & Application Fee
| Important Dates | Application Fees | ||
|---|---|---|---|
Age Limit & Eligibility Details
| Age Limit | Eligibility | ||
|---|---|---|---|
Vacancy Details
| Vacancy Details | |
|---|---|
How to Apply Online & Required Documents
| How to Apply | Required Documents |
|---|---|
Pay Scale & Selection Process
| Selection Process | Pay Scale | ||
|---|---|---|---|
Exam Pattern & Syllabus
| Exam Pattern & Syllabus | |||
|---|---|---|---|
Important Useful Links for Apply Online, Download Notification
| Important Useful Links | |||
|---|---|---|---|
| Apply Online | Click Here | ||
| Download Notification / Rule Book | Click Here | ||
| Join Whatsapp Channel | Click Here | ||
| Join Telegram Channel | Click Here | ||
| Official Website of Department | Click Here | ||
IOCL Junior Engineer / Officer Recruitment 2025 : Exam Preparation Strategy
Preparing for the IOCL Junior Engineer/Officer exam requires a focused approach, blending technical expertise with aptitude skills. The CBT includes 50 Domain Knowledge questions (Chemical, Mechanical, Electrical, or Instrumentation) and 50 General Aptitude questions (20 Quantitative, 15 Logical, 15 Verbal), lasting 150 minutes with a 0.25-mark penalty for wrong answers. Qualifying marks are 45% overall for General/EWS/OBC-NCL, 40% for SC/ST, and 30% for PwBD. Success also hinges on performing well in GD, GT, and PI.
How to Crack This Type of Exam
To succeed, prioritize Domain Knowledge (60% of study time) while strengthening aptitude. Master core concepts—e.g., thermodynamics for Mechanical or sensors for Instrumentation—and practice numericals daily. Balance with aptitude through speed-based practice.
Study Plan &Time Management
Plan 3-6 months: Month 1 for basics (4-5 hours/day), Month 2 for advanced topics, and Month 3 for practice. Adjust weekly based on weak areas. Practice timed mocks (75 minutes for Domain, 75 for Aptitude) and aim for 80-90 accurate answers in the exam, avoiding guesses.
Importance of Mock Tests
Mock tests simulate the exam, boost accuracy, and reduce stress. Take 2-3 weekly in the last month, focusing on IOCL-specific technical depth. Analyze errors to improve by 20-30%.
Role of Previous Year Papers
PYPs highlight trends (e.g., circuit theory in Electrical) and repeat questions (30-40%). Solve 5-10 timed papers to build confidence.
Routine Integration
Use one PYP every few days, noting key formulas.
Latest Trends
Expect application-based technical questions and aptitude shifts toward data interpretation. GD may focus on sustainability. Stay updated via IOCL’s website.
Sample Questions and Recommended Books/Study Material
Sample Questions
Domain Knowledge
- Minimum trays in a distillation column occur at: (A) Total reflux (B) Minimum reflux Answer: (A)
- SI unit of viscosity: (A) Poise (B) Pascal-second Answer: (B)
- Carnot engine efficiency (800 K, 400 K): (A) 50% (B) 25% Answer: (A)
- Gear train velocity ratio (20:40 teeth): (A) 2:1 (B) 1:2 Answer: (B)
- Power factor of resistive circuit: (A) 0 (B) 1 Answer: (B)
- Transformer core loss minimized by: (A) Silicon steel (B) Copper Answer: (A)
- Thermocouple principle: (A) Seebeck effect (B) Peltier effect Answer: (A)
- PID controller output includes: (A) P, I, D terms (B) Only P Answer: (A)
General Aptitude
- 3 workers collect 48 kg in 4 days, 9 in 2 days?: (A) 108 (B) 72 Answer: (A)
- Interest on Rs. 405 at 9% for 1 year: (A) Rs. 45 (B) Rs. 40.50 Answer: (A)
- (27 + 498) ÷ 25 = ? (A) 21 (B) 17 Answer: (A)
- Cost price if profit on Rs. 10 equals cost: (A) Rs. 5 (B) Rs. 3 Answer: (A)
- Some leaders dishonest, Neelam is leader: (A) Honest (B) Some honest Answer: (B)
- A-Z interchange, 13th from right: (A) M (B) N Answer: (B)
- ‘DEPRESSION’ pair swap, 7th from right: (A) R (B) P Answer: (B)
- Multiple of 4: (A) 27114 (B) 58204 Answer: (B)
- ‘Quarrel’ synonym: (A) Fall out (B) Call out Answer: (A)
- He was ___ the heat: (A) Tired of (B) Tired from Answer: (A)
- ‘Dishonest’ antonym: (A) Honest (B) Reliable Answer: (A)
- Error in ‘The boys is playing’: (A) Is playing (B) The boys Answer: (A)
Recommended Books
Domain Knowledge
- Chemical: “Unit Operations” by McCabe & Smith.
- Mechanical: “Thermodynamics” by Cengel & Boles.
- Electrical: “Electrical Machines” by P.S. Bimbhra.
- Instrumentation: “Industrial Instrumentation” by D. Patranabis.
Aptitude
- Quantitative: “Quantitative Aptitude” by R.S. Aggarwal.
- Reasoning: “A Modern Approach to Reasoning” by R.S. Aggarwal.
- Verbal: “Objective General English” by S.P. Bakshi.
- Mocks: Testbook, EduGorilla PDFs.
Frequently Asked Question (FAQ)
Question 1: When does IOCL Junior Engineer Recruitment 2025 online application start?
Answer: The application starts from 12th September 2025.
Question 2: What is the last date to apply for IOCL Junior Engineer Recruitment 2025?
Answer: The last date is 28th September 2025 (till 5:00 PM).
Question 3: Who can apply for IOCL Junior Engineer Recruitment 2025?
Answer: Candidates having a 3-Year Diploma in Chemical, Mechanical, Electrical, or Instrumentation can apply.
Question 4: How many vacancies are released in IOCL Junior Engineer Recruitment 2025?
Answer: The total vacancies will be notified soon.
Question 5: What is the age limit for IOCL Junior Engineer Recruitment 2025?
Answer: The maximum age limit is 26 years as on 01 July 2025 (with relaxation for reserved categories).
Question 6: What is the salary in IOCL Junior Engineer Recruitment 2025?
Answer: The pay scale is ₹30,000 – ₹1,20,000/-, with CTC ~₹10.6 Lakh per annum including allowances.
Question 7: What is the exam date of IOCL Junior Engineer Recruitment 2025?
Answer: The Computer Based Test (CBT) will be held on 31st October 2025.
Question 8: What is the selection process in IOCL Junior Engineer Recruitment 2025?
Answer: The selection will be based on CBT (85%) + GD/GT (5%) + PI (10%).
Question 9: What is the application fee for IOCL Junior Engineer Recruitment 2025?
Answer: The fee is ₹400 + GST (Gen/OBC/EWS). SC/ST/PwBD candidates are exempted.
Question 10: Where can I apply for IOCL Junior Engineer Recruitment 2025?
Answer: Candidates must apply online only at the official website www.iocl.com.
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The information provided here is for quick reference and simplified understanding. Candidates are strongly advised to visit the official website for complete and authentic details including eligibility, syllabus, and official notifications. For easy to understand the notification details and simplified job details, please visit GovtJobLink.com.