Ironworker NCCER {Oxyfuel Cutting}
Verified Multiple Choice and Conceptual Actual
Frequently Tested Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is oxyfuel cutting (OFC), also known as flame cutting or burning?
A. A process that uses electricity to melt steel
B. A process that uses the flame and oxygen from a cutting torch to cut ferrous
metals
C. A method of joining metals with heat
D. A laser-based metal cutting process
ANSWER: B
2. What does the cutting process result in?
A. Pure molten metal
B. Rust and debris
C. Oxides that mix with molten iron to form dross, which is blown from the cut by
the oxygen jet
D. Slag buildup and weak joints
ANSWER: C
3. Which metals is the oxyfuel cutting process usually used on?
A. Nonferrous metals
B. Aluminum and copper
,C. Ferrous metals such as straight carbon steels
D. Stainless steel
ANSWER: C
4. What height should your high-top safety shoes or boots be?
A. 4 inches
B. 6 inches
C. 8 inches or taller
D. 10 inches
ANSWER: C
5. What filter shade is recommended for a face shield according to ANSI Z49.1?
A. Shade 1–2
B. Shade 3–6 depending on metal thickness
C. Shade 7–10
D. Shade 11–14
ANSWER: B
6. What must you have before performing any type of heating, cutting, or
welding?
A. A welding license
B. A supervisor’s approval
C. A hot work permit and an approved fire watch
D. A spark shield
ANSWER: C
7. Which gas is lighter than air and can explode at very low concentrations when
mixed with air or oxygen?
A. Propane
, B. Acetylene
C. MAPP
D. Butane
ANSWER: B
8. What should you do before cutting containers?
A. Fill them with oxygen
B. Leave them sealed
C. Check what they contained, clean them, and fill with water or purge with inert
gas
D. Cut immediately
ANSWER: C
9. Which materials or coatings can produce toxic fumes when cut?
A. Zinc, Lead, Chromium, Beryllium, Cadmium, and Mercury
B. Iron and Carbon
C. Nickel and Tin only
D. Copper and Brass
ANSWER: A
10. What happens when pure oxygen is combined with burning material?
A. The fire flares and burns out of control
B. The flame goes out
C. The metal cools
D. The flame turns blue
ANSWER: A
11. What happens when pure oxygen is mixed with fuel gases?
A. Produces smoke
Verified Multiple Choice and Conceptual Actual
Frequently Tested Exam Questions With
Reviewed 100% Correct Detailed Answers
Guaranteed Pass!!Current Update!!
1. What is oxyfuel cutting (OFC), also known as flame cutting or burning?
A. A process that uses electricity to melt steel
B. A process that uses the flame and oxygen from a cutting torch to cut ferrous
metals
C. A method of joining metals with heat
D. A laser-based metal cutting process
ANSWER: B
2. What does the cutting process result in?
A. Pure molten metal
B. Rust and debris
C. Oxides that mix with molten iron to form dross, which is blown from the cut by
the oxygen jet
D. Slag buildup and weak joints
ANSWER: C
3. Which metals is the oxyfuel cutting process usually used on?
A. Nonferrous metals
B. Aluminum and copper
,C. Ferrous metals such as straight carbon steels
D. Stainless steel
ANSWER: C
4. What height should your high-top safety shoes or boots be?
A. 4 inches
B. 6 inches
C. 8 inches or taller
D. 10 inches
ANSWER: C
5. What filter shade is recommended for a face shield according to ANSI Z49.1?
A. Shade 1–2
B. Shade 3–6 depending on metal thickness
C. Shade 7–10
D. Shade 11–14
ANSWER: B
6. What must you have before performing any type of heating, cutting, or
welding?
A. A welding license
B. A supervisor’s approval
C. A hot work permit and an approved fire watch
D. A spark shield
ANSWER: C
7. Which gas is lighter than air and can explode at very low concentrations when
mixed with air or oxygen?
A. Propane
, B. Acetylene
C. MAPP
D. Butane
ANSWER: B
8. What should you do before cutting containers?
A. Fill them with oxygen
B. Leave them sealed
C. Check what they contained, clean them, and fill with water or purge with inert
gas
D. Cut immediately
ANSWER: C
9. Which materials or coatings can produce toxic fumes when cut?
A. Zinc, Lead, Chromium, Beryllium, Cadmium, and Mercury
B. Iron and Carbon
C. Nickel and Tin only
D. Copper and Brass
ANSWER: A
10. What happens when pure oxygen is combined with burning material?
A. The fire flares and burns out of control
B. The flame goes out
C. The metal cools
D. The flame turns blue
ANSWER: A
11. What happens when pure oxygen is mixed with fuel gases?
A. Produces smoke
