IOCL Junior Officer Mechanical (Grade E0) 2026 Free Guess Paper

The IOCL Junior Officer Mechanical Grade E0 2026 exam falls on September 24, 2026. Admit cards went out on September 15, 2026. Candidates now have less than a week to convert months of study into exam-day marks, so the final stretch matters more than the earlier months of preparation.

TL;DR

• The CBT has 100 questions across two fixed sections, with 150 minutes total time.
• Negative marking stands at 1/4 mark per wrong answer.
• General, EWS, and OBC-NCL candidates need 45% overall to qualify. SC/ST candidates need 40% overall. PwBD candidates need 30% overall.
• The CBT carries 85% weight in final selection. Group Discussion and Group Task carry 5%, and the Personal Interview carries 10%.
• Mechanical candidates gain the most from extra focus on CAD, Measurement and Metrology, Advanced Manufacturing, and Industrial Engineering and Management.
• The E0 grade pay scale runs from ₹30,000 to ₹1,20,000, with an approximate CTC of ₹11.1 lakh per year.

IOCL Grade E0 2026: Key Dates and Vacancy Snapshot

IOCL opened the application window on August 14, 2026 and closed it on September 3, 2026. The notification covers 470 vacancies across Graduate Engineer, Officer Marketing, Law Officer, Assistant Quality Control Officer, and Diploma Engineer (Grade E0) posts. This cycle does not require a GATE score. Selection runs through IOCL’s own CBT, followed by Group Discussion, Group Task, and Personal Interview.

CBT Structure: Two Sections in a Fixed Order

The CBT splits into Section A and Section B. Section A covers non-technical topics. Section B covers the technical, domain-specific subject. The exam presents Section A first. Section B always follows it. A candidate cannot change this order.

Each correct answer earns 1 mark. Each wrong answer deducts 0.25 marks. The question count stays moderate against the available time, so the paper tends to carry a slightly higher difficulty level per question.

Qualifying Cutoff Marks by Category

Clearing the minimum cutoff does not guarantee a seat. A candidate must still rank inside the merit list once IOCL applies the full weightage formula.

Why the CBT Carries 85 Percent Weight

IOCL applies a fixed formula across the three stages of selection. The CBT score decides most of the outcome.

A strong CBT score protects a candidate even if the Group Discussion or interview does not go perfectly. A weak CBT score is hard to recover from later, since the remaining two stages together decide only 15% of the final result.

Mechanical Section: Where Diploma Engineer Candidates Should Focus

The technical section draws its 50 questions from a defined set of mechanical subjects. Some subjects appear in most engineering PSU and government exams. Others appear less often elsewhere but carry a heavier weight in IOCL’s paper.

CAD and Measurement and Metrology deserve extra attention. Questions from these two areas appear often in past IOCL papers, more often than their weight in a typical mechanical syllabus would suggest.

Syllabus Versus Question Pattern: A Preparation Note

The published syllabus list and the actual question pattern do not always match. External testing agencies write and administer many PSU technical papers, drawing on a shared item bank used across similar recruitment exams. Because of this, previous-year questions from comparable banking and PSU exams often predict the paper better than the syllabus document alone.

A practical response is to revise notes, work through previous-year questions from comparable exams, and run section-timed mock tests that match the real 60-minute and 90-minute splits. The IOCL CBT does not include a current affairs component, so time spent there does not convert into marks.

Grade E0 Pay Scale and Application Cost

The Grade E0 post carries a defined pay band and a modest application fee relative to the expected return.

Selected candidates also serve a minimum three-year service bond. The bond amount is lower for reserved categories than for the general category. The CTC figure includes dearness allowance, house rent allowance, medical benefits, gratuity, provident fund, and performance-related pay, in addition to the basic pay scale shown above.

What This Means for the Final Stretch

With days left before the exam, the priority order matters more than the total hours studied. Section-timed mock tests matter most, since they train a candidate to manage the 90-minute technical block and the 60-minute non-technical block separately. Revising CAD, Measurement and Metrology, and Advanced Manufacturing pays off faster than adding new topics this late. Section A still needs the same 40% minimum as Section B, so a candidate cannot skip quant, reasoning, and English to chase the technical score alone. A candidate who balances both sections and manages negative marking carefully stands a better chance of crossing the overall cutoff and landing inside the merit list.

Common Questions

What is the total marks and time for the IOCL Grade E0 CBT? The CBT carries 100 questions for 100 marks, split across two sections, with 150 minutes total time.

What is the negative marking in the IOCL CBT? Each wrong answer deducts 0.25 marks, equal to one-fourth of a correct answer’s value.

What is the qualifying cutoff for General category candidates? General, EWS, and OBC-NCL candidates need at least 45% overall, with at least 40% in each section.

Does the IOCL CBT include current affairs? No. The technical and non-technical sections do not include a current affairs component.

What is the salary for IOCL Grade E0 Diploma Engineer? The pay scale runs from ₹30,000 to ₹1,20,000 per month, with an approximate CTC of ₹11.1 lakh per year.