SECL Grade C Syllabus 2026 – CBT Exam Pattern & Post-wise Topics
SECL's selection for all 1,055 Grade C posts — Mining Sirdar (577), Deputy Surveyor (43), and Assistant Foreman Electrical (435) — happens through a single-stage Computer Based Test. 100 multiple choice questions, 80 technical and 20 General Awareness, no negative marking. The technical section is entirely different for each post. This guide covers the complete CBT structure and the subject-wise syllabus for all three posts.
SECL Grade C CBT Exam Pattern
| Component | Details |
|---|---|
| Mode | Computer Based Test (CBT) |
| Total Questions | 100 MCQ |
| Technical Questions | 80 marks |
| General Awareness Questions | 20 marks |
| Marks per Question | 1 mark |
| Negative Marking | None |
| Duration | Announced separately; typically 90 minutes |
| Language | English and Hindi |
| Minimum Qualifying Marks | UR/EWS: 45% | OBC: 40% | SC/ST: 35% |
The qualifying marks bar is important. You need at least 45 out of 100 (UR/EWS) to be considered for the merit list — raw scores below this cut don't make it to document verification regardless of how others performed. SC/ST candidates have a lower bar (35/100), but the competition within reserved categories at SECL is still real.
👉 SECL Grade C Salary 2026 — clearing this CBT earns you NCWA pay of ₹47,330 plus allowances — see the full in-hand breakdown
General Awareness – 20 Marks (Common to All Posts)
All three posts share the same 20-question General Awareness section. SECL's GA section for technical posts tends toward current affairs, India's coal sector, and safety/environment rather than deep history or polity.
Coal Sector & Coal India (6–8 Questions)
- Coal India Limited — structure, subsidiaries (SECL, NCL, ECL, CCL, MCL, BCCL, WCL, NEC, CIL-MF)
- SECL specifically — location (Chhattisgarh, Madhya Pradesh), major coalfields (Korba, Sohagpur, Bisrampur, Johilla, Chirimiri), production volumes
- India's coal production statistics — rank in global production, key states
- Coal types — coking vs non-coking coal, lignite, anthracite
- National Coal Policy, Coal Mines (Special Provisions) Act, nationalization history
- CIL's Mission Utthan — technology upgradation in coal sector
- Open Cast vs Underground mining — India's ratio, SECL's operations
Mine Safety & Environment (4–5 Questions)
- Mines Act 1952 — key provisions (working hours, health and safety, inspections)
- Coal Mines Regulations (CMR) — basic understanding
- DGMS — role of Directorate General of Mines Safety
- Common mine hazards — gas outburst, roof fall, flooding, fire
- Environment regulations relevant to mining — EIA, Forest Conservation Act basics
Current Affairs – National & State (6–7 Questions)
- Important national appointments (last 12 months)
- India's economic highlights — GDP, budget announcements relevant to infrastructure and energy
- Chhattisgarh and Madhya Pradesh state news
- Recent sports events (national/international)
- Science and technology — space missions (ISRO), national tech initiatives
- Awards — Bharat Ratna, Padma awards, national sports awards
General Science & Mathematics (3–4 Questions)
- Basic physics — force, pressure, electricity fundamentals
- Basic chemistry — common mining-related chemical concepts
- Numerical ability — percentage, ratio, simple interest
Technical Syllabus – Post 1: Mining Sirdar (80 Marks)
Mining Sirdar CBT technical content is drawn from the curriculum for Sirdar Certificate examination, covering mine working, gas hazards, safety legislation, roof support, and practical mining operations.
Mine Working & Excavation (18–22 Marks)
- Bord and pillar method — development, pillaring, depillaring sequences
- Longwall mining — advancing and retreating longwall, supports, caving
- Opencast mining — bench parameters, stripping ratio, dragline and shovel-dumper operation concepts
- Shaft sinking — methods, lining types, winding equipment basics
- Drivages — roadway profiles, dimensions, arching, rib sides
- Blasting — explosives types (permitted vs non-permitted in gassy mines), detonators, firing circuits, misfires procedure
- Mine drainage — sump design, pump types, drainage gradient
Mine Gases & Ventilation (20–25 Marks)
- Mine gases — composition, properties, permissible limits: Methane (CH4), Carbon Dioxide (CO2), Carbon Monoxide (CO), Hydrogen Sulfide (H2S), Nitrogen (N2)
- Methane drainage techniques
- Mine ventilation — natural ventilation, mechanical (fan) ventilation, auxiliary ventilation (duct, overlap methods)
- Fan types — centrifugal vs axial flow; fan laws, fan curves, resistance
- Gas testing — flame safety lamp operation, electronic gas detectors, multi-gas monitors, proper testing procedures (this is core for Sirdar)
- Mine atmosphere monitoring — fixed and portable systems
- Firedamp, blackdamp, afterdamp — sources, detection, emergency response
Roof Support & Strata Control (15–18 Marks)
- Types of roof support — conventional timber props, steel props, hydraulic props, powered roof supports
- Support density calculations — load-bearing capacity
- Rock mechanics basics — stress, strain, plastic zone, pillar design
- Roof falls — causes, precautions, safe practices under unsupported roof
- Strata monitoring — tell-tales, convergence measurements, roof-to-floor closure
- Barrier pillars — purpose and dimensions
Mine Legislation & Sirdar Statutory Duties (15–18 Marks)
- Mines Act 1952 — Sections applicable to Sirdars: Section 45 (manager duties), Section 36 (inspections), safety committees
- Coal Mines Regulations (CMR) — Regulation 105 (Sirdar duties), Regulation 137 (gas testing), Regulation 162 (roof support), Regulation 179 (deputies/sirdars)
- Coal Mines (Conservation and Development) Act
- First Aid obligations under Mine Rules — Sirdar's role in rescue and first aid
- Accident reporting — statutory reporting timelines, forms
- Inundation and fire — Sirdar's immediate duties, evacuation procedures
Technical Syllabus – Post 2: Deputy Surveyor (80 Marks)
Mine Surveying Fundamentals (25–30 Marks)
- Chain surveying — offsets, chain lines, field book plotting
- Levelling — dumpy level, automatic level; staff readings; reduced levels; methods (HI, Rise & Fall)
- Theodolite traversing — horizontal and vertical angle measurement, traverse computation, closing error
- Total station — working principle, field data collection, coordinate geometry
- Mine plans — standards for preparation under DGMS regulations; Regulations 122–130 (plan maintenance)
- Underground surveying — compass traversing, gyroscopic surveying, co-relate surfaces
Coordinate Geometry & Calculations (15–20 Marks)
- Plotting of traverses — computing co-ordinates, Bowditch adjustment
- Area calculation — by mid-ordinate rule, trapezoidal rule, Simpson's rule, coordinate method
- Volume computation — prismoidal formula, sections for spoil heaps and excavations
- Grade and gradient — practical mine road gradient calculations
- Error propagation in measurements
Mine Plans & DGMS Regulations (20–25 Marks)
- Statutory plans under CMR — Surface Plan, Contour Plan, Ventilation Plan, Drainage Plan requirements
- Scale requirements and plan storage obligations under Regulations 122–124
- Pillar extraction boundaries — barrier pillar calculations
- Surface features — plotting buildings, roads, water bodies on mine plans
- Subsidence surveying — measurement and monitoring
Technical Syllabus – Post 3: Assistant Foreman Electrical (80 Marks)
Electrical Fundamentals (20–25 Marks)
- DC circuits — Ohm's Law, KVL, KCL, series-parallel circuits, network theorems (Thevenin, Norton, Superposition)
- AC circuits — phasors, RLC circuits, resonance, power factor correction, 3-phase systems (star and delta connections)
- Electromagnetic induction — Faraday's law, Lenz's law, mutual inductance
- Electrical energy and power — active, reactive, apparent power; power measurement (Wattmeter, 2-wattmeter method)
Electrical Machines (20–25 Marks)
- DC machines — DC generators (shunt, series, compound) construction, EMF equation, characteristics; DC motors (types, speed control, starters, braking)
- Transformers — construction, EMF equation, equivalent circuit, efficiency, regulation, losses (copper and iron); cooling methods; parallel operation
- Induction motors — 3-phase squirrel cage and slip ring; rotating magnetic field; slip; torque-speed characteristics; starting methods (DOL, star-delta, auto-transformer)
- Synchronous machines — alternator construction, EMF equation, voltage regulation; synchronous motor basics
Mine Electrical Regulations & Safety (15–18 Marks)
- Electricity Act 2003 — general provisions for electrical installations
- Indian Electricity Rules — earthing, isolation, switchgear requirements
- CMR regulations for mine electrical installations — Regulations 165–180 (electrical equipment in gassy mines, flameproof standards)
- Flameproof equipment — meaning, FLP certification, conditions for use underground
- Earthing systems — TT, TN, IT systems; mine earthing requirements
- High voltage safety — isolation procedures, lock-out tag-out, HV work permits
Power Systems & Switchgear (10–15 Marks)
- Power transmission and distribution — substation layouts, transformer ratings, feeder protection
- Switchgear — ACB, VCB, SF6 breakers; protective relays (overcurrent, earth fault, differential)
- Cables — types (XLPE, SWA), current ratings, fault detection methods
- Mining electrical equipment — coal cutters, conveyors, winding engines, pumps, compressors; motor selection criteria
- Power factor improvement — capacitor bank sizing basics
Preparation Strategy – How to Score 70+
For Mining Sirdar (Gas Testing is Key)
Gas testing and ventilation questions carry the highest marks in Sirdar technical papers across all Coal India CBTs. Study methane permissible limits (1.25% in intake airway for closure, 0.5% trigger for investigation), gas testing sequence (roof first, then ribs, then floor), and lamp behavior in different gas concentrations — these details come up repeatedly in actual questions.
👉 SECL Grade C Eligibility 2026 — Gas Testing Certificate is also a mandatory eligibility document for Mining Sirdar — not just exam content
For Asst. Foreman Electrical (Machines Over Theory)
Electrical machines (DC, transformers, induction motors) consistently contribute 25–30 marks in CIL electrical technical papers. Start with transformers — EMF equation, efficiency formula, and losses — then induction motor slip calculations. Circuit theorems (Thevenin, Norton) for DC circuits. Mine electrical regulations (CMR flameproof sections) carry 15+ marks and are completely missed by candidates who only study standard electrical theory.
General Awareness (Coal India Focus)
Spend 2 hours learning CIL's subsidiary structure and SECL's coalfields by heart. Coal India GA questions at Grade C level almost always include "which subsidiary is in which state" and "which coalfield is under SECL." That's 4–6 guaranteed marks if memorized.
Frequently Asked Questions
Q1. Is there negative marking in SECL Grade C CBT 2026?
No. SECL's official notification confirms no negative marking. Attempt all 100 questions.
Q2. What is the qualifying score?
Minimum 45% for UR/EWS (45 out of 100), 40% for OBC (40/100), 35% for SC/ST (35/100). Scores below this are not considered for the merit list.
Q3. Is the technical section same for all three posts?
No. Mining Sirdar, Deputy Surveyor, and Asst. Foreman Electrical each have a completely separate 80-mark technical syllabus. Apply only for the post matching your qualification and prepare the correct syllabus.
Q4. Where is the official SECL Grade C syllabus PDF?
SECL publishes the detailed syllabus as part of the official notification at secl-cil.in. Check the Recruitment section for the PDF download link. Applications open from 15 April 2026.
Q5. How many candidates typically appear for SECL Grade C?
Coal India Grade C recruitments typically attract 80,000–1.5 lakh applications for the technical posts. Mining Sirdar has the most applicants among the three posts due to larger vacancy count (577) and wider eligibility.
Post-Wise Technical Syllabus Deep Dive
The technical section (80 marks) is entirely post-specific. Preparing the wrong technical syllabus is the most common mistake applicants make — particularly those who apply for Mining Sirdar without realising how different the content is from Electrical or Surveying.
Mining Sirdar (577 posts — largest vacancy block): The technical questions test working knowledge of coal mining operations as required under the Coal Mines Regulations, 2017. Key areas: underground and open-cast mining methods (room & pillar, longwall, bord & pillar basics), mine safety regulations (rescue procedures, fire prevention, gas detection), mine machinery operation (SDL, LHD, continuous miners — recognition and safety), ventilation principles (air quantities, pressure measurement, split ventilation), explosives handling and shot-firing rules, support systems (roof bolting, steel arches, timber props), and the DGMS certificate syllabus overlap (since Mining Sirdar candidates typically already hold DGMS certificates and can draw on that preparation).
Deputy Surveyor (100 posts): Mine surveying topics dominate: chain and compass surveying, levelling instruments (Dumpy level, auto level), theodolite operations (horizontal and vertical angles, traversing), mine plan preparation and updating requirements under CMR 2017, contour interpolation, underground survey methods, plan scales and statutory regulations for plan submission. Calculation-heavy section — practice numerical accuracy.
Asst. Foreman Electrical (378 posts): Core electrical engineering: DC fundamentals (circuits, batteries, charging systems), AC theory (single and three-phase systems, power factor correction), Transformers (step-up/step-down, cooling methods, testing), Electrical Machines (DC motors/generators, 3-phase induction motors, starting methods), Power Systems basics (HT/LT distribution, cable sizing, protection relays), and mine-specific topics (flameproof equipment, permissible electrical apparatus for mines as per CMR 2017, surface electrical safety).
Preparation Timeline — 8 Weeks to CBT
| Week | Focus |
|---|---|
| Week 1–2 | Core technical fundamentals for your post (revise from ITI/diploma textbooks) |
| Week 3–4 | CMR 2017 regulations applicable to your post + safety procedures |
| Week 5–6 | Practice MCQs from CIL subsidiary previous papers (SECL/NCL/CCL similar pattern) |
| Week 7 | General Awareness — Bihar/MP/CG current affairs, Coal India updates, national schemes |
| Week 8 | Mock tests (full 100Q / 90 min) — identify weak areas and revise |
