Recreational Vehicle (RV) Technician Practice Test

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Prepare for the RV Technician Test. Use flashcards and multiple-choice questions with hints and explanations. Ensure your success!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

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What is the visibility of propane gas when released into the atmosphere?

Highly visible
Visible as vapor
Invisible
Brightly colored

The correct answer is: Invisible

Propane gas is colorless and nearly odorless when released into the atmosphere, making it invisible to the naked eye. This characteristic means that individuals cannot see propane gas under normal conditions. However, for safety reasons, an odorant called ethyl mercaptan is typically added to propane to create a distinct smell, which helps people detect leaks. The addition of this odorant does not affect the visibility of the gas itself, which remains clear and undetectable visually. In the context of the other options, while propane can create vapor when it is in contact with the atmosphere, that vapor is also not visible in the way fog or smoke would be. Thus, the most accurate description of propane gas's visibility is that it is indeed invisible when released.