Interview experience
ONGC Interview Questions
Overview
Section titled “Overview”ONGC recruits engineering and geoscience Graduate Trainees through its own Computer-Based Test rather than a pure GATE-score shortlist - a route that itself has shifted across recent recruitment cycles.
ONGC interview process at a glance
Section titled “ONGC interview process at a glance”| Round | Duration | What they test |
|---|---|---|
| Computer-Based Test (CBT) | ~120 min | Domain (40Q), aptitude/reasoning (25Q), general awareness (10Q), English (10Q); 85 marks total, no negative marking |
| Personal Interview | 15-25 min | Core discipline fundamentals, PSU/field-work suitability (~1:5 shortlist ratio, 15% of final merit) |
| Document Verification + Medical Exam | - | Eligibility proof, fitness for field/offshore postings |
Computer-Based Test (CBT)
Section titled “Computer-Based Test (CBT)”ONGC’s own screening exam, replacing a pure GATE-score shortlist for recent cycles: 85 objective questions in roughly 120 minutes with no negative marking, split across your concerned engineering/geoscience domain (40 questions - the largest single section), general aptitude and reasoning (25), general awareness (10), and English (10). CBT performance carries about 85% weight in final merit, so it does most of the actual selecting.
Common questions
- Domain-specific questions at B.E./B.Tech curriculum depth for your discipline (Petroleum, Mechanical, Chemical, Instrumentation, Geology, etc.)
- Quantitative aptitude and logical reasoning
- General awareness - current affairs, energy sector, ONGC-relevant topics
- English comprehension and grammar
Personal Interview
Section titled “Personal Interview”Shortlisted at roughly a 1:5 ratio on CBT score, candidates then go through a Personal Interview weighted at about 15% of final merit. It goes deep on your core discipline and probes genuine suitability for a PSU role that can involve field, drilling, or offshore postings.
Common questions
- Core technical questions from your engineering/geoscience discipline
- Detailed walkthrough of your final-year project - methodology, results, design choices
- What do you know about ONGC’s exploration and production operations?
- Are you willing to work at field sites, drilling locations, or offshore platforms, and why?
Sample answer frameworks are on the ONGC HR interview questions page.
Document Verification and Medical Examination
Section titled “Document Verification and Medical Examination”The final stage before appointment: document verification against your application and category/eligibility claims, plus a mandatory medical fitness examination - a real gate given that many ONGC postings involve physically demanding field, drilling, or offshore work.
Common questions
- Verification of educational certificates, category certificates, and other eligibility documents
- Standard medical fitness parameters relevant to field/offshore posting eligibility
Why the screening route matters here
Section titled “Why the screening route matters here”Unlike most companies covered on this site, ONGC’s screening mechanism for Graduate Trainee hiring has genuinely changed across recent recruitment cycles - moving between GATE-score-based shortlisting and its own in-house CBT. This isn’t a stylistic detail; it changes what you should actually be studying and when. Before you commit prep time, check the live ONGC recruitment notification (advertisement number, not a summary blog) for your specific cycle and discipline to confirm which route is active and what the current CBT syllabus and weightage are.
Frequently asked questions about ONGC interviews
Section titled “Frequently asked questions about ONGC interviews”What is the ONGC interview process for freshers?
ONGC (Oil and Natural Gas Corporation) hires engineering and geoscience freshers as Graduate Trainees. Recent recruitment cycles (2026) run this through ONGC’s own Computer-Based Test (CBT) rather than a GATE-score shortlist: 1. CBT - 85 objective questions in about 120 minutes, split across your concerned domain (40 questions), aptitude/reasoning (25), general awareness (10), and English (10), with no negative marking. 2. Personal Interview for candidates shortlisted at roughly a 1:5 ratio based on CBT performance. 3. Document verification and a mandatory medical examination, since many postings involve field or offshore work. Final merit weights CBT and interview roughly 85:15.
Does ONGC still hire through GATE, or is it a separate written exam now?
For its 2026 Graduate Trainee recruitment cycle, ONGC ran its own Computer-Based Test (CBT) as the primary screening exam rather than shortlisting purely on GATE scores. This is a change worth knowing about if you’re prepping from older material describing a GATE-only route - always check the current ONGC recruitment notification for the exact route being used in your cycle, since PSU hiring routes can and do change between years.
What questions are asked in the ONGC interview?
The CBT tests your concerned engineering/geoscience domain (Petroleum, Mechanical, Chemical, Instrumentation, Geology, etc.), plus general aptitude/reasoning, general awareness, and English. The Personal Interview that follows focuses on core discipline fundamentals for your branch, awareness of ONGC’s exploration and production operations, and willingness to work at field sites, drilling locations, or offshore platforms. There’s no DSA/coding round - this is a technical-domain and PSU-fit evaluation, not a software-style interview.
How many rounds are there in the ONGC interview?
Two main stages: the CBT (which does the heavy screening, weighted 85% of final merit) and a Personal Interview (weighted 15%) for those shortlisted at roughly 1:5. Document verification and a medical examination follow before final appointment as a Graduate Trainee.
How should I prepare for ONGC interviews?
Focus first on the CBT - revise your specific engineering/geoscience domain deeply since it carries 40 of the 85 questions and 85% of final merit, alongside general aptitude, reasoning, general awareness, and English. For the Personal Interview, revise your core subjects further, read up on ONGC’s exploration and production business, and be prepared to discuss willingness to work at remote field, drilling, or offshore locations - a standard and genuinely important part of ONGC’s PSU hiring evaluation.