Balloon Exam Practice Questions And

FDNY G34 Use of Liquefied Petroleum Gas or Compressed Natural Gas in Hot–Air Balloon Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

• What is the primary fuel used for most hot-air balloons?
• Gasoline
• Diesel
• Propane (LPG)
• Jet fuel

Rationale: Propane is the standard fuel used for hot-air balloon

burners due to its clean burn and efficient heat output.

• Which gas is lighter than air and can rise quickly if released?
• Propane 1 / 3

• Compressed Natural Gas (CNG)
• Butane
• Carbon dioxide

Rationale: CNG is lighter than air and will disperse upward, reducing

ground-level accumulation risks.

• Liquid propane must be stored in what type of container?
• Plastic jugs
• Glass bottles
• Approved DOT-rated cylinders
• Metal buckets

Rationale: Regulations require propane to be stored in safety-rated

cylinders designed for pressurized gas.

• What is the minimum safe distance from ignition sources when

refueling propane?

• 2 feet
• 5 feet
• 10 feet
• 25 feet

Rationale: 25 feet ensures separation to prevent ignition from static

or flame sources.

• What is the main hazard of propane leaks?
• Toxic fumes
• Corrosion 2 / 3

• Fire/explosion risk
• Low-temperature burns

Rationale: Propane is highly flammable, and leaks can create

dangerous explosive environments.

6. CNG cylinders should be inspected at least:

• Weekly
• Monthly
• Annually
• Every 5 years

Rationale: Annual inspection ensures integrity of high-pressure gas

vessels for safety compliance.

• When using propane near spectators, what is required?
• Police tape
• A controlled safety perimeter
• No additional measures
• A guard dog

Rationale: A designated perimeter ensures spectators stay out of

dangerous proximity to fuel equipment.

• Which condition indicates a defective LPG cylinder?
• Minor paint scratches
• Visible rust and dents
• White frost near bottom
• / 3