NOCTI Welding Test – 100 Multiple-Choice
Practice Questions & Answers | Safety, Symbols,
OFC, SMAW, GMAW/FCAW, GTAW, Defects &
Math | Instant Pdf Download
Intro / Description
This NOCTI-style Welding practice exam contains 100 original multiple-choice questions with correct
answers and concise explanations, designed to mirror the core content areas of common NOCTI welding
assessments. It comprehensively covers shop and personal safety, welding symbols and blueprints,
oxyfuel cutting (OFC) and arc cutting processes, metal types and properties, fit-up and weld quality,
Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW) and Flux Cored Arc Welding
(FCAW), Gas Tungsten Arc Welding (GTAW/TIG), common weld defects with corrective actions, welding
procedures and WPS basics, and essential welding math needed on the job
Q1–Q10: Safety and PPE
Q1
Which welding hazard is most directly associated with UV radiation
from the arc?
A. Heat cramps.
B. Eye and skin damage.*
C. Back strain.
D. Noise-induced hearing loss.
Explanation: UV light from welding arcs can burn eyes and skin.
,Q2
What is the primary purpose of a welding helmet with proper shade
lens?
A. Block sound.
B. Protect eyes and face from arc rays and sparks.*
C. Cool the operator.
D. Improve ventilation.
Explanation: Helmets shield against intense light and flying particles.
Q3
When moving a compressed gas cylinder, the welder should always:
A. Roll it on its side.
B. Use a cylinder cart and keep the cap on.*
C. Lift by the valve.
D. Drag it across the floor.
Explanation: Cylinders must be moved upright with caps and carts for
safety.
,Q4
What type of fire extinguisher is typically used on ordinary
combustibles like wood and paper?
A. Class B.
B. Class A.*
C. Class C.
D. Class D.
Explanation: Class A extinguishers are for ordinary combustibles.
Q5
Before welding in a confined space, the welder should ensure:
A. Extra lighting only.
B. Adequate ventilation and gas monitoring are in place.*
C. More flammable materials are stored nearby.
D. Doors are locked.
Explanation: Confined spaces require ventilation and monitoring to
prevent toxic buildup.
Q6
, What is the best practice for clothing when welding?
A. Short sleeves and synthetic fabrics.
B. Flame-resistant, long-sleeve garments with minimal exposed skin.*
C. Loose scarves and nylon jackets.
D. Open-toe shoes.
Explanation: Flame-resistant clothing reduces burn risk.
Q7
Which hazard is most reduced by using proper fume extraction near the
weld?
A. Falls from heights.
B. Inhalation of harmful fumes and gases.*
C. Electrical shock.
D. Noise exposure.
Explanation: Extraction systems remove airborne contaminants from
the breathing zone.
Q8
Lockout/tagout procedures are primarily used to:
Practice Questions & Answers | Safety, Symbols,
OFC, SMAW, GMAW/FCAW, GTAW, Defects &
Math | Instant Pdf Download
Intro / Description
This NOCTI-style Welding practice exam contains 100 original multiple-choice questions with correct
answers and concise explanations, designed to mirror the core content areas of common NOCTI welding
assessments. It comprehensively covers shop and personal safety, welding symbols and blueprints,
oxyfuel cutting (OFC) and arc cutting processes, metal types and properties, fit-up and weld quality,
Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW) and Flux Cored Arc Welding
(FCAW), Gas Tungsten Arc Welding (GTAW/TIG), common weld defects with corrective actions, welding
procedures and WPS basics, and essential welding math needed on the job
Q1–Q10: Safety and PPE
Q1
Which welding hazard is most directly associated with UV radiation
from the arc?
A. Heat cramps.
B. Eye and skin damage.*
C. Back strain.
D. Noise-induced hearing loss.
Explanation: UV light from welding arcs can burn eyes and skin.
,Q2
What is the primary purpose of a welding helmet with proper shade
lens?
A. Block sound.
B. Protect eyes and face from arc rays and sparks.*
C. Cool the operator.
D. Improve ventilation.
Explanation: Helmets shield against intense light and flying particles.
Q3
When moving a compressed gas cylinder, the welder should always:
A. Roll it on its side.
B. Use a cylinder cart and keep the cap on.*
C. Lift by the valve.
D. Drag it across the floor.
Explanation: Cylinders must be moved upright with caps and carts for
safety.
,Q4
What type of fire extinguisher is typically used on ordinary
combustibles like wood and paper?
A. Class B.
B. Class A.*
C. Class C.
D. Class D.
Explanation: Class A extinguishers are for ordinary combustibles.
Q5
Before welding in a confined space, the welder should ensure:
A. Extra lighting only.
B. Adequate ventilation and gas monitoring are in place.*
C. More flammable materials are stored nearby.
D. Doors are locked.
Explanation: Confined spaces require ventilation and monitoring to
prevent toxic buildup.
Q6
, What is the best practice for clothing when welding?
A. Short sleeves and synthetic fabrics.
B. Flame-resistant, long-sleeve garments with minimal exposed skin.*
C. Loose scarves and nylon jackets.
D. Open-toe shoes.
Explanation: Flame-resistant clothing reduces burn risk.
Q7
Which hazard is most reduced by using proper fume extraction near the
weld?
A. Falls from heights.
B. Inhalation of harmful fumes and gases.*
C. Electrical shock.
D. Noise exposure.
Explanation: Extraction systems remove airborne contaminants from
the breathing zone.
Q8
Lockout/tagout procedures are primarily used to:
