Question 1573 Deck General

The correct answer is B) heavier. Liquefied petroleum gas (LPG) vapors are heavier than air. This is because LPG is denser than air, with a specific gravity of around 1.5 to 2.0 depending on the gas composition. Compared to air, which has a specific gravity of 1.0, the LPG vapors are heavier and will sink rather than rise like air. This property makes LPG prone to pooling in low-lying areas, which is an important safety consideration for its handling and storage. The other options are incorrect - the weight of LPG vapors is not variable (A), nor is it the same as air (D), as it is clearly heavier.