Technical Standards and Safety Authority (TSSA) G3 Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the TSSA G3 Exam. Study with quizzes, flashcards, and multiple-choice questions. Each provides valuable hints and detailed explanations to ensure readiness for your exam!

Practice this question and more.

The specific gravity of propane vapour is:

greater than that of air
less than that of air
the same as that of natural gas
less than that of natural gas

The correct answer is: greater than that of air

The specific gravity of propane vapour is less than that of air. Specific gravity is a measure of the density of a substance compared to a reference substance, which in the case of gases is usually air. Propane vapour has a specific gravity of approximately 1.5, which indicates that it is denser than air, as the specific gravity of air is around 1.0. This means that propane vapour will tend to settle in low areas rather than rise, which is an important safety consideration, particularly in the event of a leak. Understanding the behaviour of propane vapour in relation to air is critical for ensuring proper ventilation and mitigating any risks associated with its use or storage. The other choices imply different relationships between propane vapour and air or natural gas, which do not accurately reflect the properties of propane. It's essential to remember that in safety assessments and standards, understanding these characteristics helps to inform proper handling, installation, and emergency response practices.