Skilled Trades Exam Prep: Practice Questions and Study Guides
CDL, OSHA, and trade certifications. Browse grouped exam families, then open the exact practice questions, study guide, flashcards, or related resource for your credential.
Last updated Jun 15, 2026 · 1,300 exams indexed
1300
Exams
94
Families
1300
Practice Pages
146,144
Practice Questions
What You'll Find in Skilled Trades
Skilled Trades is organized as a domain hub first, then split into exam families and exact exam pages so candidates can move from broad category to the right credential quickly.
Exam Coverage
1,300 exams are grouped into 94 exam families with national, vendor, credential, and state variants kept together where applicable.
Practice Questions
Resource cards link directly to free practice questions when a question bank exists for the exam, alongside study guides, flashcards, course links, blog articles, glossary terms, and comparisons.
Hub Structure
Domain pages help users and search engines understand the category. Family pages handle related exam variants, and individual exam pages handle exact study or practice workflows.
Exam Families
Family hubs group related national, vendor, credential, and state exam variants.
Pesticide Applicator
Pesticide applicator exam prep with state licensing guides, practice questions, flashcards, and coverage for labels, safety, application methods, pests, environmental protection, and regulations.
Water / Wastewater Operator
Water and wastewater operator exam prep with certification guides, practice questions, flashcards, and coverage for treatment processes, distribution, collections, math, safety, and regulations.
Asbestos Abatement
Asbestos Abatement licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for hazard identification, EPA regulations, personal protective equipment, containment procedures, waste disposal, and air monitoring.
Plumber License
Plumber licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for plumbing code, drainage, venting, water supply, fuel gas, and safety.
Canada Red Seal Interprovincial Trades
Canada Red Seal Interprovincial (IP) trade exam prep with practice questions, flashcards, and study guides covering the multiple-choice Red Seal Occupational Standard exams for skilled trades — construction, mechanical, automotive, industrial, and service trades — that let certified journeypersons work across all participating provinces and territories.
ICC Certifications
ICC certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for building inspection, plans examination, electrical systems, mechanical systems, plumbing, energy conservation, and fire safety.
Fire Alarm Installer
Fire Alarm Installer licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for NFPA 72, circuit design, initiating devices, notification appliances, system wiring, inspection, and testing.
Fire Sprinkler Contractor
Fire Sprinkler Contractor licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for NFPA 13 code, system design, hydraulic calculations, pipe sizing, installation methods, and inspection requirements.
NCCER Certifications
NCCER trade certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for core curriculum, tools and safety, rigging and material handling, blueprint reading, mechanical systems, and trade-specific skills.
Electrician License
Electrician licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for code, wiring methods, calculations, safety, and electrical theory.
HVAC Contractor License
HVAC contractor licensing exam prep with trade guides, practice questions, flashcards, and coverage for heating, cooling, refrigeration, load calculations, codes, and safety.
General Contractor License
General contractor licensing exam prep with state guides, practice questions, flashcards, and coverage for construction law, project management, estimating, safety, contracts, and building codes.
Funeral Director Jurisprudence
Funeral Director Jurisprudence exam prep with state licensing guides, practice questions, flashcards, and coverage for state funeral laws, licensing requirements, preneed regulations, consumer protection, recordkeeping, facility standards, and ethics.
NICET Certifications
NICET certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for fire alarm systems, water-based suppression, construction inspection, materials testing, special hazards, and system layout.
Low Voltage Contractor
Low Voltage Contractor licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for cabling standards, structured wiring, fire alarm systems, security systems, AV installations, and NEC low-voltage rules.
American Welding Society Certifications
American Welding Society certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for weld quality, inspection methods, codes and standards, metallurgy, welding processes, and safety.
Well Driller / Pump Installer
Well Driller and Pump Installer licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for drilling methods, well construction, pump installation, water quality, grouting, and state regulations.
AMPP Certifications
AMPP corrosion and cathodic protection certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for corrosion science, cathodic protection design, inspection methods, coatings, electrochemistry, and failure analysis.
Australian Trade Licences & Certificate III
Australian trade licence and Certificate III exam prep with practice questions, flashcards, and study guides covering electrical (Capstone/AS-NZS 3000), plumbing and gasfitting licences, the construction White Card, and trade-theory knowledge for carpentry, bricklaying, welding, refrigeration, and other CPC/UEE/AUR/MEM qualifications.
ACI Concrete Certifications
ACI Concrete certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for concrete testing, mix design, field inspection, shotcrete application, structural repair, and quality control procedures.
ABC Water Operator Certification
ABC water operator certification prep with study guides, practice questions, flashcards, and coverage for water treatment, distribution, wastewater treatment, collections, math, and safety.
Landscape Contractor License
Landscape Contractor License exam prep with trade and licensing guides, practice questions, flashcards, and coverage for plant identification, irrigation systems, grading, pest management, business law, and landscape construction.
Roofing Contractor License
Roofing Contractor licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for roofing systems, materials, flashing, codes, safety regulations, and contractor business law.
USCG Captain Licenses
USCG Captain license exam prep with trade and licensing guides, practice questions, flashcards, and coverage for navigation rules, chart reading, vessel safety, stability, fire and emergency procedures, and STCW requirements.
Boiler Operator
Boiler Operator licensing exam prep with state and trade guides, practice questions, flashcards, and coverage for boiler construction, steam systems, fuel combustion, safety controls, water treatment, and pressure vessel regulations.
IICRC Certifications
IICRC restoration and cleaning certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for water damage restoration, mold remediation, fire and smoke restoration, structural drying, odor control, and carpet cleaning.
NATE HVAC Certifications
NATE (North American Technician Excellence) HVAC certification exam prep with practice questions, flashcards, and study guides covering the Core exam and installation and service specialties — air conditioning, heat pumps, gas and oil heating, air distribution, hydronics, light commercial and commercial refrigeration, plus low-GWP refrigerants, ground source heat pumps, and senior efficiency analysis.
STCW Maritime Training Certifications
STCW maritime training certification prep with practice questions and coverage for advanced fire fighting, survival craft and rescue boats, medical care, maritime security, tanker cargo operations, passenger ship safety and crisis management, and ECDIS navigation.
NCCCO Crane Operator Certifications
NCCCO Crane Operator certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for load charts, rigging fundamentals, crane inspection, signal communication, safety regulations, and operational controls.
API Inspector Certifications
API Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for pressure vessel inspection, piping systems, risk-based inspection, welding metallurgy, corrosion mechanisms, and pipeline construction.
South Africa Artisan Trade Tests
South African artisan trade test exam prep with practice questions, flashcards, and study guides covering the QCTO/NAMB designated trades — electrician, plumber, welder, boilermaker, fitter, millwright, diesel and motor mechanic, refrigeration, rigger, instrumentation and more — built on the N2 trade-theory knowledge base and SANS standards behind the national trade test.
InterNACHI Home Inspector Certification
InterNACHI Home Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for structural systems, roofing, electrical, plumbing, HVAC, mold detection, and environmental hazards.
City & Guilds UK Trade Qualifications
City & Guilds UK trade qualification exam prep with practice questions, flashcards, and study guides covering the online multiple-choice knowledge tests for electrical installation (2365/2382/2391), plumbing and heating, carpentry and joinery, painting and decorating, bricklaying, and gas, aligned to BS 7671 and UK building standards.
Ireland SOLAS Apprenticeship & Safe Pass
Ireland SOLAS apprenticeship and Safe Pass exam prep with practice questions, flashcards, and study guides covering the Phase 4/6 craft apprenticeship theory exams for electrical, plumbing, carpentry, refrigeration, fabrication and motor trades, plus the Safe Pass construction safety awareness assessment, aligned to Irish national wiring rules, building services standards, and SOLAS course content.
ASNT NDT Certifications
ASNT NDT certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for ultrasonic testing, radiographic testing, magnetic particle testing, liquid penetrant testing, visual testing, and eddy current testing.
BPI Building Performance Certifications
BPI Building Performance certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for building science principles, energy auditing, air leakage testing, HVAC systems, envelope diagnostics, and health and safety.
Elevator Mechanic License
Elevator Mechanic licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for ASME A17.1 code, electrical systems, hydraulic systems, safety devices, wiring diagrams, and installation procedures.
NABCEP Certifications
NABCEP solar and energy storage certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for PV system design, installation safety, commissioning, energy storage, system inspection, and technical sales.
ACAC Mold Certifications
ACAC indoor air quality and mold certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for mold inspection, microbial remediation, indoor environmental assessment, air sampling, health effects, and remediation protocols.
Structural Pest Control Licenses
Structural pest control license exam prep with practice questions, flashcards, and study guides covering state structural pest categories — general household and rodent control, termite and wood-destroying organisms, fumigation, and lawn and ornamental — including pest biology and identification, integrated pest management, pesticide safety and labeling, and state structural pest control law.
ASSE Plumbing Certifications
ASSE plumbing and medical gas certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for backflow prevention, cross-connection control, medical gas systems installation, fire protection piping, and program administration.
NRCA Roofing Certifications
NRCA roofing certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for asphalt shingle installation, low-slope membrane systems, metal roofing, modified bitumen, tile installation, and flashing techniques.
AACE Certifications
AACE certification exam prep with certification guides, practice questions, flashcards, and coverage for cost estimating, project planning and scheduling, earned value management, risk analysis, forensic claims, and project controls.
CDL
CDL exam prep with permit and endorsement guides, practice questions, flashcards, and coverage for general knowledge, air brakes, combination vehicles, hazmat, passenger, and school bus topics.
CTEF Tile Installer Certification
CTEF tile installer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for substrate preparation, waterproofing membranes, mortar beds, grout application, large-format tile, and shower receptor installation.
RSES HVACR Certifications
RSES (Refrigeration Service Engineers Society) HVACR certification exam prep with practice questions, flashcards, and study guides covering the Certificate Member core exam and Certificate Member Specialist areas — the refrigeration cycle, electrical and motor controls, heating and combustion, commercial air conditioning and refrigeration, heat pumps, controls, dynamic compression, refrigerant management, and system troubleshooting.
SAIA Scaffold Certifications
SAIA Scaffold Competent Person certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for scaffold erection, load capacity, fall protection, tube and coupler systems, frame scaffolds, and OSHA standards.
FCC Radio Operator Licenses
FCC Radio Operator License exam prep with trade and licensing guides, practice questions, flashcards, and coverage for radio regulations, antenna theory, distress procedures, GMDSS equipment, maritime communications, and radar systems.
IIW International Welding Qualifications
IIW International Institute of Welding qualification exam prep with practice questions, flashcards, and study guides covering the international welding-coordination diplomas (IWE/IWT/IWS/IWP) and welding inspector levels (IWI-B/S/C) — welding processes and equipment, materials and behaviour during welding, construction and design, fabrication engineering, weld imperfections, NDE, and codes and standards.
Irrigation Association Certifications
Irrigation Association certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for system design, hydraulics, water management, scheduling and auditing, installation practices, and agricultural and landscape applications.
Radon Professional Certifications
NRPP and NRSB radon certification exam prep (RMP, RMS, RMFT, RMI, RMT, RRS) with practice questions and flashcards covering radon science and health risks, measurement device protocols, QA/QC programs, mitigation system design and installation, and ANSI/AARST standards.
Crane Operator License
Crane Operator licensing exam prep with trade and licensing guides, practice questions, flashcards, and coverage for load calculations, rigging, crane inspection, safety regulations, operational signals, and state-specific code requirements.
IMSA Traffic Signal Technician
IMSA Traffic Signal Technician certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for cabinet wiring, controller programming, vehicle detection, signal timing, communications systems, and MUTCD standards.
LEED Credentials
LEED credential exam prep with trade and licensing guides, practice questions, flashcards, and coverage for sustainable site design, energy efficiency, water use reduction, indoor environmental quality, materials, and green building operations.
AHERA Asbestos Certifications
AHERA Asbestos certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for asbestos identification, abatement procedures, inspection protocols, project design, management planning, and EPA regulations.
ISA Arborist Certifications
ISA (International Society of Arboriculture) certification exam prep with practice questions, flashcards, and study guides covering the Board Certified Master Arborist, Utility and Municipal Specialist, Aerial Lift Specialist, and Tree Risk Assessment Qualification — tree biology, soil and site assessment, pruning, risk assessment, integrated vegetation management, and urban forestry.
NALP Landscape Certifications
NALP Landscape Industry certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for horticulture, plant identification, turf management, irrigation, pesticide application, and landscape installation.
NBBI Inspector Certifications
NBBI Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for ASME boiler codes, pressure vessel inspection, in-service inspection procedures, repair standards, and safety regulations.
NEBB High-Performance Building Systems Certifications
NEBB High-Performance Building Systems certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for testing, adjusting and balancing, commissioning, building enclosure testing, sound measurement, and HVAC systems.
NIULPE Power Engineer Certifications
NIULPE Power Engineer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for boiler operation, thermodynamics, heat transfer, electrical systems, mechanical equipment, and plant efficiency.
Building Envelope & Air Barrier Certifications
Building envelope certification exam prep with practice questions, flashcards, and study guides covering air barrier installation and auditing, EIFS inspection, and spray polyurethane foam installation — building science and air/water/vapor control, materials and assemblies, code requirements, installation methods, field testing, and inspection and documentation.
EPA 608 Refrigerant Certifications
EPA Section 608 refrigerant certification exam prep with practice questions, flashcards, and study guides covering the Core, Type I small appliance, Type II high-pressure, Type III low-pressure, and Universal certification levels — the Clean Air Act and ozone regulations, refrigerant recovery, recycling and reclamation, leak detection, evacuation, and safe handling.
FRA Railroad Certifications
FRA railroad certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for locomotive operation, train handling, railroad rules, signal systems, track safety, and federal operating regulations.
HVAC Excellence Certifications
HVAC Excellence (ESCO Institute) certification exam prep with practice questions, flashcards, and study guides covering the Professional Technician written exams — residential air conditioning, gas heat, heat pumps, and light commercial refrigeration — including refrigeration theory, electrical troubleshooting, combustion, system installation and service.
NETA ETT Certifications
NETA ETT Electrical Testing Technology exam prep with trade and licensing guides, practice questions, flashcards, and coverage for electrical test equipment, power system maintenance, safety standards, relay protection, switchgear, and transformer testing.
New Zealand Trade Registration Exams
New Zealand trade registration exam prep with practice questions, flashcards, and study guides covering the PGDB certifying plumber, gasfitter, and drainlayer examinations and the EWRB electrical registration theory exam — NZ Building Code, AS/NZS 3500 and 5601, the Wiring Rules, and national safety regulations.
NGWA Groundwater Certifications
NGWA Groundwater certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for well drilling methods, pump installation, aquifer science, well construction standards, closed loop systems, and groundwater regulations.
UK Construction & Electrotechnical Trades
UK construction and electrotechnical trade exam prep with practice questions, flashcards, and study guides covering the CITB site safety schemes (SSSTS, SMSTS), the ECS Health & Safety assessment, and the AM2 applied-knowledge assessment — site management duties, CDM regulations, risk assessment, and electrical safety knowledge.
UK Gas Safe / ACS Gas Assessments
UK Gas Safe Register and ACS gas-assessment exam prep with practice questions, flashcards, and study guides covering domestic, commercial heating, and commercial catering gas safety — gas safety legislation (GSIUR), tightness testing, combustion, ventilation and flueing, pipework sizing, and unsafe-situations procedures under the CCN1 and CODNCO core assessments.
AABC and TABB Air and Hydronic Balancing Certifications
AABC and TABB air and hydronic balancing certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for air distribution systems, hydronic balancing, fan and pump laws, psychrometrics, instrumentation, and sound and vibration testing.
Amateur Radio Licenses
Amateur Radio licensing exam prep with official handbook study guides, practice questions, flashcards, and coverage for FCC regulations, operating procedures, radio wave propagation, antenna theory, electrical principles, and safety.
EPA Lead Abatement
EPA Lead Abatement certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for lead hazard identification, abatement methods, worker safety, regulatory compliance, inspection protocols, and project design.
ISA CCST Certifications
ISA CCST Control Systems Technician certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for process measurement, instrumentation calibration, control loops, process control, documentation, and troubleshooting.
ITC Thermography Certifications
ITC Infrared Thermographer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for thermography principles, thermal imaging equipment, emissivity, heat transfer, inspection applications, and image interpretation.
PCI Concrete Certifications
PCI precast concrete certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for precast production quality, mix design, structural tolerances, inspection procedures, and plant and field auditing standards.
CISEC Sediment and Erosion Control Inspectors
CISEC Sediment and Erosion Control Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for erosion control principles, BMP installation, stormwater regulations, site inspection, and plan review.
CSCS Health, Safety & Environment Tests
CSCS Health, Safety & Environment (HS&E) test prep with practice questions, flashcards, and study guides covering the CITB touchscreen tests for operatives and for managers and professionals — working environment, occupational health, general safety, high-risk activities, and specialist topics required for a CSCS construction card.
Dynamic Positioning Certifications
Dynamic positioning certification prep with practice questions and coverage for DP principles and system components, position reference systems, power generation and redundancy, thrusters and control modes, failure modes and FMEA, and DP trials and assurance.
EPA Lead Inspector and Risk Assessor
EPA Lead Inspector and Risk Assessor certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for lead-based paint regulations, inspection protocols, risk assessment, sampling methods, and HUD guidelines.
FGIA FenestrationMasters
FGIA FenestrationMasters certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for window and door products, installation methods, glazing systems, building codes, weatherization, and product performance standards.
Flooring Installation Certifications
Flooring installation certification exam prep with practice questions, flashcards, and study guides covering wood flooring installer and inspector credentials — subfloor preparation and moisture testing, installation methods (nail, glue, float), acclimation, layout, industry standards, problem identification, and inspection and reporting.
ICRI Concrete Certification
ICRI concrete repair certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for concrete surface preparation, moisture testing, crack repair, overlay systems, material selection, and quality control.
IMSA Roadway Lighting Technician
IMSA Roadway Lighting Technician exam prep with trade and licensing guides, practice questions, flashcards, and coverage for luminaire installation, electrical safety, photometric standards, maintenance procedures, and roadway lighting design.
IMSA Signs and Markings Technician
IMSA signs and pavement markings technician exam prep with trade and licensing guides, practice questions, flashcards, and coverage for sign installation standards, pavement marking materials, work zone safety, MUTCD requirements, and field inspection.
Insulation Certifications
Insulation certification exam prep with practice questions, flashcards, and study guides covering thermal insulation inspector and installer credentials — mechanical and building insulation materials and R-values, protective coverings, installation best practices, building science and moisture control, safety data sheets, and codes and standards.
NORMI Mold Certifications
NORMI mold certification exam prep (Certified Mold Assessor and Certified Mold Remediator, Florida MRSA/MRSR licensure track) with practice questions and flashcards covering mold assessment and sampling, lab report interpretation, moisture mapping, remediation protocols, containment, and PPE.
PTI Multistrand Certifications
PTI Multistrand certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for post-tensioning systems, grouting procedures, tendon installation, structural inspection, load calculations, and safety standards.
PTI Unbonded Installer
PTI Unbonded Post-Tensioning Installer certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for tendon installation, stressing procedures, anchorage systems, inspection requirements, safety practices, and ACI code compliance.
RYA Yachtmaster Theory Exams
RYA Yachtmaster theory exam prep with practice questions and coverage for chartwork and position fixing, tides and tidal streams, collision regulations, meteorology, passage planning and pilotage, celestial and ocean navigation, and safety and GMDSS.
ASHI Home Inspector Certification
ASHI home inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for structural systems, roofing, electrical, plumbing, HVAC, insulation, and site conditions.
FCICA Certification
FCICA floor covering installation management certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for project management, estimating, installation standards, business operations, safety, and quality control.
MCAA Masonry Certification
MCAA National Masonry Certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for masonry materials, mortar and grout, structural systems, layout and coursing, safety standards, and quality control.
MICB Inspection Certification
MICB Certified Master Inspector certification exam prep with trade and licensing guides, practice questions, flashcards, and coverage for structural systems, roofing, electrical, plumbing, HVAC, and inspection reporting standards.
PDCA Painting Contractor Certification
PDCA Certified Painting Contractor exam prep with trade and licensing guides, practice questions, flashcards, and coverage for surface preparation, coating application, project estimating, business management, safety regulations, and paint specification standards.
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Common Questions
Where can I find free Skilled Trades practice questions?
This hub links to 1,300 Skilled Trades practice pages with 146,144+ practice questions across available exams. Start from a practice link on this page or open the exact exam card for study guides, flashcards, and related resources.
What skilled trades exams does OpenExamPrep cover?
OpenExamPrep organizes 1,300 exams across 94 exam families in Skilled Trades. Each family links to available study guides, practice questions, flashcards, blog resources, glossary terms, and comparisons.
How should I choose a skilled trades exam resource?
Start with the exam family that matches your credential or licensing path, then choose the exact exam page for your jurisdiction or certification. Family hubs group related national and state exams so candidates can compare resources without searching one exam at a time.
Are these skilled trades resources free?
Yes. OpenExamPrep study guides, practice questions, flashcards, glossary resources, and AI study support are free to access, with no credit card required for the core exam prep materials.