FLORIDA LP MASTER QUALIFIER MOCK TEST
WITH ANSWER RATIONALES 2026
◉ What is the specific gravity of propane vapor compared with air?
Answer: 1.5 (heavier)
◉ How much does one gallon of liquid propane weigh?
Answer: 4.2 lb
◉ What is the lower flammability limit (LFL) for propane in air?
Answer: 2.15%
◉ Which component of the fire triangle provides the heat source
needed for combustion?
Answer: Heat
◉ Why is ethyl mercaptan added to propane?
Answer: To provide a detectable odor for leak detection
◉ Which type of container is regulated by the Department of
Transportation (DOT) for portable use?
,Answer: DOT cylinder
◉ What is the primary use of an ASME tank?
Answer: Stationary bulk storage of LP gas
◉ What is the initial certification period for a new DOT cylinder
before its first recertification?
Answer: 10 years
◉ What does 'tare weight' of a propane cylinder refer to?
Answer: The weight of the empty cylinder only
◉ What is the purpose of a Pressure Relief Valve (PRV) on a propane
container?
Answer: Prevent over-pressurization by venting excess gas
◉ What limitation do Overfill Prevention Devices (OPDs) have?
Answer: They cannot prevent overfill beyond 80% of the cylinder's
water capacity
◉ Which gauge type provides a continuous visual indication of
liquid level in a bulk tank?
Answer: Fixed liquid level gauge
, ◉ What is the primary function of excess flow valves (EFVs)?
Answer: Prevent uncontrolled release if a line is ruptured
◉ What type of pipe is not approved for LP gas piping?
Answer: PVC pipe (Schedule 40)
◉ What is the primary factor used to determine gas pipe diameter?
Answer: The pressure drop across the system
◉ To what pressure does the first-stage regulator reduce tank
pressure?
Answer: Approximately 11 psi
◉ What is the venting requirement for a propane regulator's second
stage?
Answer: Must vent to the outdoors, not into the building
◉ What is the main difference between vapor and liquid delivery
systems?
Answer: Vapor systems deliver propane in gaseous form; liquid
systems deliver it as a liquid
WITH ANSWER RATIONALES 2026
◉ What is the specific gravity of propane vapor compared with air?
Answer: 1.5 (heavier)
◉ How much does one gallon of liquid propane weigh?
Answer: 4.2 lb
◉ What is the lower flammability limit (LFL) for propane in air?
Answer: 2.15%
◉ Which component of the fire triangle provides the heat source
needed for combustion?
Answer: Heat
◉ Why is ethyl mercaptan added to propane?
Answer: To provide a detectable odor for leak detection
◉ Which type of container is regulated by the Department of
Transportation (DOT) for portable use?
,Answer: DOT cylinder
◉ What is the primary use of an ASME tank?
Answer: Stationary bulk storage of LP gas
◉ What is the initial certification period for a new DOT cylinder
before its first recertification?
Answer: 10 years
◉ What does 'tare weight' of a propane cylinder refer to?
Answer: The weight of the empty cylinder only
◉ What is the purpose of a Pressure Relief Valve (PRV) on a propane
container?
Answer: Prevent over-pressurization by venting excess gas
◉ What limitation do Overfill Prevention Devices (OPDs) have?
Answer: They cannot prevent overfill beyond 80% of the cylinder's
water capacity
◉ Which gauge type provides a continuous visual indication of
liquid level in a bulk tank?
Answer: Fixed liquid level gauge
, ◉ What is the primary function of excess flow valves (EFVs)?
Answer: Prevent uncontrolled release if a line is ruptured
◉ What type of pipe is not approved for LP gas piping?
Answer: PVC pipe (Schedule 40)
◉ What is the primary factor used to determine gas pipe diameter?
Answer: The pressure drop across the system
◉ To what pressure does the first-stage regulator reduce tank
pressure?
Answer: Approximately 11 psi
◉ What is the venting requirement for a propane regulator's second
stage?
Answer: Must vent to the outdoors, not into the building
◉ What is the main difference between vapor and liquid delivery
systems?
Answer: Vapor systems deliver propane in gaseous form; liquid
systems deliver it as a liquid
