FDNY G98 Handling, Use, and Storage
of Flammable Compressed Gases Exam
With Actual Questions & Verified
Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Updated/Instant Download Pdf
1. What is the primary hazard associated with flammable
compressed gases?
A. Electrical shock
B. Fire and explosion
C. Radiation exposure
D. Biological contamination
Rationale: Flammable compressed gases can ignite and explode
if exposed to heat, sparks, or open flames, making fire and
explosion the primary hazard.
2. Which of the following is the safest location to store flammable
compressed gas cylinders?
A. Near a furnace
B. In a poorly ventilated closet
C. In a cool, well-ventilated area away from ignition sources
D. In direct sunlight
, Rationale: Cylinders must be kept in areas with proper
ventilation and away from heat or sparks to prevent accidents.
3. How should cylinders be stored to prevent them from falling
over?
A. Lying on their side
B. Stacked horizontally
C. Upright and secured with a chain or strap
D. On a soft surface
Rationale: Securing cylinders upright prevents tipping, which can
damage the valve and cause leaks.
4. Which color typically identifies a flammable gas cylinder?
A. Blue
B. Green
C. Red
D. Yellow
Rationale: Red is commonly used to indicate flammable gases
for quick visual recognition.
5. What should you do if a flammable gas cylinder is leaking?
A. Try to seal it with tape
B. Move it to a closed room
C. Evacuate the area and notify the fire department
D. Ignore it
Rationale: Leaks of flammable gases are extremely hazardous;
evacuation and professional response are required.
6. Before using a compressed gas cylinder, you should always:
A. Shake it
B. Inspect for damage, leaks, and correct labeling
C. Heat it slightly
D. Use it immediately
, Rationale: Inspection ensures the cylinder is safe and properly
labeled, preventing accidents.
7. What is the correct procedure for transporting compressed gas
cylinders?
A. Rolling them on the ground
B. Carrying them by the valve
C. Using a suitable hand truck with the cylinder secured
D. Sliding them along the floor
Rationale: Proper handling with a secured hand truck prevents
tipping and valve damage.
8. Which device is used to regulate the flow of gas from a cylinder?
A. Pressure gauge
B. Regulator
C. Check valve
D. Relief valve
Rationale: A regulator controls the pressure and flow of gas from
the cylinder to the equipment.
9. What should you do if you smell gas in an area where cylinders
are stored?
A. Light a match to test it
B. Evacuate and ventilate the area
C. Spray water on the source
D. Call maintenance later
Rationale: Flammable gases can ignite easily; immediate
evacuation and ventilation reduce risk.
10. Why must flammable gas cylinders be kept away from
oxidizing gases?
A. To prevent rust
B. To prevent violent chemical reactions
of Flammable Compressed Gases Exam
With Actual Questions & Verified
Answers, Plus Explained
Rationales/Expert Verified For
Guaranteed Pass 2026/Latest
Updated/Instant Download Pdf
1. What is the primary hazard associated with flammable
compressed gases?
A. Electrical shock
B. Fire and explosion
C. Radiation exposure
D. Biological contamination
Rationale: Flammable compressed gases can ignite and explode
if exposed to heat, sparks, or open flames, making fire and
explosion the primary hazard.
2. Which of the following is the safest location to store flammable
compressed gas cylinders?
A. Near a furnace
B. In a poorly ventilated closet
C. In a cool, well-ventilated area away from ignition sources
D. In direct sunlight
, Rationale: Cylinders must be kept in areas with proper
ventilation and away from heat or sparks to prevent accidents.
3. How should cylinders be stored to prevent them from falling
over?
A. Lying on their side
B. Stacked horizontally
C. Upright and secured with a chain or strap
D. On a soft surface
Rationale: Securing cylinders upright prevents tipping, which can
damage the valve and cause leaks.
4. Which color typically identifies a flammable gas cylinder?
A. Blue
B. Green
C. Red
D. Yellow
Rationale: Red is commonly used to indicate flammable gases
for quick visual recognition.
5. What should you do if a flammable gas cylinder is leaking?
A. Try to seal it with tape
B. Move it to a closed room
C. Evacuate the area and notify the fire department
D. Ignore it
Rationale: Leaks of flammable gases are extremely hazardous;
evacuation and professional response are required.
6. Before using a compressed gas cylinder, you should always:
A. Shake it
B. Inspect for damage, leaks, and correct labeling
C. Heat it slightly
D. Use it immediately
, Rationale: Inspection ensures the cylinder is safe and properly
labeled, preventing accidents.
7. What is the correct procedure for transporting compressed gas
cylinders?
A. Rolling them on the ground
B. Carrying them by the valve
C. Using a suitable hand truck with the cylinder secured
D. Sliding them along the floor
Rationale: Proper handling with a secured hand truck prevents
tipping and valve damage.
8. Which device is used to regulate the flow of gas from a cylinder?
A. Pressure gauge
B. Regulator
C. Check valve
D. Relief valve
Rationale: A regulator controls the pressure and flow of gas from
the cylinder to the equipment.
9. What should you do if you smell gas in an area where cylinders
are stored?
A. Light a match to test it
B. Evacuate and ventilate the area
C. Spray water on the source
D. Call maintenance later
Rationale: Flammable gases can ignite easily; immediate
evacuation and ventilation reduce risk.
10. Why must flammable gas cylinders be kept away from
oxidizing gases?
A. To prevent rust
B. To prevent violent chemical reactions
