CTR 156CT Propane Final EXAM QUESTIONS AND
VERIFIED CORRECT ANSWERS 2025-2026 || 100%
GUARANTEED PASS <BRAND NEW VERSION>
When filling a cylinder by volume and a white mist begins to escape from the fixed maximum
liquid level gauge, you need to immediately __________. - CORRECT ANSWER- close the hose
end valve
The permanent marking "4BA240" tells you that the cylinder is made of ___________. -
CORRECT ANSWER- Alloy steel
A person can be inside a motorhome while the tank is being filled. - CORRECT ANSWER- False
___________________ is added to propane to increase the likelihood that a leak will be
detected. - CORRECT ANSWER- Odorant
Propane autogas dispensing systems typically use a ________ to fuel the vehicle. - CORRECT
ANSWER- gasoline-style, low-emission nozzle
When filling a cylinder by volume, the cylinder will be full when ________. - CORRECT
ANSWER- white mist begins to escape from the fixed maximum liquid level gauge.
A customer walks up to your propane filling station to buy Autogas for his vehicle. Can you sell
him a 20lb cylinder to take back to the car to fill it where it ran out of fuel? - CORRECT
ANSWER- No
, Only use fire extinguishers to create an escape route — NOT to fight a propane fire. - CORRECT
ANSWER- True
If you see an "S" next to the date on a cylinder, that means the cylinder must be requalified
_________ from that date. - CORRECT ANSWER- 10 years
____________ control the flow of propane through the piping system of a dispenser. -
CORRECT ANSWER- Valves
At room temperature, propane is in what state? - CORRECT ANSWER- Gas
Make sure there are no ignition sources within _______ feet of the autogas filling area. -
CORRECT ANSWER- 25
Cylinders may not be filled if they are past their ___________________ date. - CORRECT
ANSWER- Re-qualification
All vehicle-mounted ASME tanks are equipped with a(n) ________. (Select all that apply.) -
CORRECT ANSWER- fixed maximum liquid level gauge
relief valve
ASME data plate
Which valves do you open on the ASME tank during filling? (Select all that apply.) - CORRECT
ANSWER- Tank filler valve
Fixed maximum liquid level gauge
Leaks, cracks, or bulging are often discovered during a ____________ cylinder inspection. -
CORRECT ANSWER- pre-fill
VERIFIED CORRECT ANSWERS 2025-2026 || 100%
GUARANTEED PASS <BRAND NEW VERSION>
When filling a cylinder by volume and a white mist begins to escape from the fixed maximum
liquid level gauge, you need to immediately __________. - CORRECT ANSWER- close the hose
end valve
The permanent marking "4BA240" tells you that the cylinder is made of ___________. -
CORRECT ANSWER- Alloy steel
A person can be inside a motorhome while the tank is being filled. - CORRECT ANSWER- False
___________________ is added to propane to increase the likelihood that a leak will be
detected. - CORRECT ANSWER- Odorant
Propane autogas dispensing systems typically use a ________ to fuel the vehicle. - CORRECT
ANSWER- gasoline-style, low-emission nozzle
When filling a cylinder by volume, the cylinder will be full when ________. - CORRECT
ANSWER- white mist begins to escape from the fixed maximum liquid level gauge.
A customer walks up to your propane filling station to buy Autogas for his vehicle. Can you sell
him a 20lb cylinder to take back to the car to fill it where it ran out of fuel? - CORRECT
ANSWER- No
, Only use fire extinguishers to create an escape route — NOT to fight a propane fire. - CORRECT
ANSWER- True
If you see an "S" next to the date on a cylinder, that means the cylinder must be requalified
_________ from that date. - CORRECT ANSWER- 10 years
____________ control the flow of propane through the piping system of a dispenser. -
CORRECT ANSWER- Valves
At room temperature, propane is in what state? - CORRECT ANSWER- Gas
Make sure there are no ignition sources within _______ feet of the autogas filling area. -
CORRECT ANSWER- 25
Cylinders may not be filled if they are past their ___________________ date. - CORRECT
ANSWER- Re-qualification
All vehicle-mounted ASME tanks are equipped with a(n) ________. (Select all that apply.) -
CORRECT ANSWER- fixed maximum liquid level gauge
relief valve
ASME data plate
Which valves do you open on the ASME tank during filling? (Select all that apply.) - CORRECT
ANSWER- Tank filler valve
Fixed maximum liquid level gauge
Leaks, cracks, or bulging are often discovered during a ____________ cylinder inspection. -
CORRECT ANSWER- pre-fill
