FDNY G-60 Torch Operations Practice Questions
WITH CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A |INSTANT
DOWNLOAD PDF
1. What is the primary hazard associated with using an
oxygen-fuel torch?
A) Electrical shock
B) Fire and explosion
C) Radiation
D) Loud noise
B) Fire and explosion — Oxygen-fuel torches produce extremely
high temperatures and can ignite nearby combustible materials.
2. Which of the following is essential personal protective
equipment (PPE) for torch operations?
A) Flame-resistant clothing
B) Safety goggles
C) Leather gloves
D) All of the above
D) All of the above — Proper PPE protects against burns, sparks,
and flying debris.
3. When setting up a torch, why must regulators be checked
for leaks?
A) To prevent oxygen contamination
B) To prevent gas leaks and potential fires
,C) To increase cutting speed
D) To conserve fuel
B) To prevent gas leaks and potential fires — Leaks can result in
uncontrolled flames or explosions.
4. Which gas is commonly used with acetylene in torch
operations?
A) Carbon dioxide
B) Nitrogen
C) Oxygen
D) Hydrogen
C) Oxygen — Oxygen is combined with acetylene to produce a
high-temperature flame suitable for cutting or welding.
5. What is the correct way to light an acetylene torch?
A) Open the acetylene valve fully and ignite
B) Open the oxygen valve first
C) Open the acetylene valve slightly and ignite, then slowly
adjust oxygen
D) Use matches to ignite directly
C) Open the acetylene valve slightly and ignite, then slowly
adjust oxygen — This prevents backfires and ensures a
controlled flame.
6. Why should torches be stored upright and in a well-
ventilated area?
A) To maintain flame quality
B) To prevent gas cylinder leaks and explosions
C) To improve cutting speed
, D) To avoid corrosion
B) To prevent gas cylinder leaks and explosions — Upright
storage prevents liquid acetylene from entering hoses and
reduces risk of accidents.
7. What is the maximum safe operating pressure for acetylene
in a standard torch setup?
A) 5 psi
B) 15 psi
C) 30 psi
D) 50 psi
B) 15 psi — Exceeding 15 psi for acetylene can cause the gas to
decompose explosively.
8. How should a torch be shut down after use?
A) Close oxygen first, then acetylene
B) Close acetylene first, then oxygen
C) Close both simultaneously
D) Leave valves partially open for ventilation
B) Close acetylene first, then oxygen — This prevents flashbacks
and ensures safe shutdown.
9. What is a flashback in torch operations?
A) A delayed flame ignition
B) A flame traveling back into the hose
C) A sudden gas leak
D) A reflection of the flame
B) A flame traveling back into the hose — Flashbacks can cause
explosions if safety devices fail.
WITH CORRECT ANSWERS (VERIFIED ANSWERS)
PLUS RATIONALES 2026 Q&A |INSTANT
DOWNLOAD PDF
1. What is the primary hazard associated with using an
oxygen-fuel torch?
A) Electrical shock
B) Fire and explosion
C) Radiation
D) Loud noise
B) Fire and explosion — Oxygen-fuel torches produce extremely
high temperatures and can ignite nearby combustible materials.
2. Which of the following is essential personal protective
equipment (PPE) for torch operations?
A) Flame-resistant clothing
B) Safety goggles
C) Leather gloves
D) All of the above
D) All of the above — Proper PPE protects against burns, sparks,
and flying debris.
3. When setting up a torch, why must regulators be checked
for leaks?
A) To prevent oxygen contamination
B) To prevent gas leaks and potential fires
,C) To increase cutting speed
D) To conserve fuel
B) To prevent gas leaks and potential fires — Leaks can result in
uncontrolled flames or explosions.
4. Which gas is commonly used with acetylene in torch
operations?
A) Carbon dioxide
B) Nitrogen
C) Oxygen
D) Hydrogen
C) Oxygen — Oxygen is combined with acetylene to produce a
high-temperature flame suitable for cutting or welding.
5. What is the correct way to light an acetylene torch?
A) Open the acetylene valve fully and ignite
B) Open the oxygen valve first
C) Open the acetylene valve slightly and ignite, then slowly
adjust oxygen
D) Use matches to ignite directly
C) Open the acetylene valve slightly and ignite, then slowly
adjust oxygen — This prevents backfires and ensures a
controlled flame.
6. Why should torches be stored upright and in a well-
ventilated area?
A) To maintain flame quality
B) To prevent gas cylinder leaks and explosions
C) To improve cutting speed
, D) To avoid corrosion
B) To prevent gas cylinder leaks and explosions — Upright
storage prevents liquid acetylene from entering hoses and
reduces risk of accidents.
7. What is the maximum safe operating pressure for acetylene
in a standard torch setup?
A) 5 psi
B) 15 psi
C) 30 psi
D) 50 psi
B) 15 psi — Exceeding 15 psi for acetylene can cause the gas to
decompose explosively.
8. How should a torch be shut down after use?
A) Close oxygen first, then acetylene
B) Close acetylene first, then oxygen
C) Close both simultaneously
D) Leave valves partially open for ventilation
B) Close acetylene first, then oxygen — This prevents flashbacks
and ensures safe shutdown.
9. What is a flashback in torch operations?
A) A delayed flame ignition
B) A flame traveling back into the hose
C) A sudden gas leak
D) A reflection of the flame
B) A flame traveling back into the hose — Flashbacks can cause
explosions if safety devices fail.
