Natural Gas Practice Exam Questions And

FDNY G44 Storage and Handling of Liquefied Petroleum Gas or Compressed Natural Gas Practice Exam Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What does LPG typically consist of?
• Oxygen and nitrogen
• Butane and propane
• Helium and methane
• Hydrogen and oxygen
• Butane and propane

LPG is primarily composed of propane and butane, making B correct.

• LPG is stored in cylinders in what physical state?
• Solid 1 / 4

• Gas only
• Liquid under pressure
• Vapor without pressure
• Liquid under pressure

LPG is stored as liquid under pressure and vaporizes when released.

• Which gas is lighter than air?
• Propane
• Butane
• Compressed Natural Gas (CNG)
• None are lighter
• Compressed Natural Gas (CNG)

CNG (methane) rises because it is lighter than air, while LPG sinks.

• Which gas tends to accumulate in low areas when leaking?

A. CNG

• Oxygen
• Nitrogen

D. LPG

D. LPG

LPG vapors are heavier than air and collect in low-lying areas.

• The maximum total capacity of LPG permitted indoors without FDNY

permit is:

• 20 lbs
• 40 lbs 2 / 4

• 100 lbs
• None allowed indoors
• 20 lbs

Up to 20 lbs of LPG may be stored indoors without a permit.

6. Cylinders must be secured in storage areas to prevent:

• Theft
• Rolling or falling
• Moisture
• Rust
• Rolling or falling

Securing cylinders prevents accidental damage or gas release.

• Cylinders may be secured using which method?
• Rope
• Welding
• Chains or straps
• Magnets
• Chains or straps

Chains or straps are required to properly secure cylinders.

8. The color of an LPG flame during proper combustion should be:

• Orange
• Blue
• White
• Yellow 3 / 4

• Blue

A blue flame indicates efficient combustion of gas.

9. When storing LPG, the area must be:

• Wet
• Heated
• Well ventilated
• Enclosed tightly
• Well ventilated

Ventilation prevents gas accumulation in case of leakage.

10. Smoking in the LPG storage area is:

• Allowed with permission
• Allowed 10 ft away
• Allowed if cylinders are capped
• Strictly prohibited
• Strictly prohibited

Ignition sources must be prohibited near LPG.

11. Cylinders showing signs of heavy rust or corrosion should be:

• Repainted
• Set aside
• Immediately removed from service
• Used carefully
• Immediately removed from service

Damaged cylinders may leak or rupture.

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