Which statement is true about LPG density compared to air?

LPG, or liquefied petroleum gas, primarily consists of propane and butane, which have a density greater than that of air. This characteristic means that in a gaseous state, LPG will settle at lower levels compared to air, making it heavier than air. In practical terms, if there were a leak in an area, LPG would tend to accumulate at ground level or in low-lying areas, posing safety hazards such as potential ignition.

Understanding this property of LPG is critical for designing systems that use it, as it directly influences ventilation requirements, leak detection strategies, and the planning of safety measures in plumbing and gas systems. Knowing that LPG is heavier than air helps engineers and designers make informed decisions to mitigate risks associated with its use.