Which gas fuel is heavier than air?

The correct answer, LP Gas, refers to a mixture of propane and butane, both of which are heavier than air. When considering gas fuels in the context of their density relative to air, it's important to note that gases that are heavier than air can accumulate in low-lying areas and pose safety risks due to their potential for creating explosive mixtures when they escape.

Butane, which is one of the components of LP Gas, is indeed heavier than air. Propane, also part of LP Gas, is slightly heavier than air as well, but LP Gas itself, as a mixture, tends to be categorized as heavier than air due to its overall density. In practices concerning ventilation and leak detection in environments where these gases are used, awareness that these gases are heavier than air is crucial for safety procedures.

Natural gas, on the other hand, is lighter than air, which is why it disperses upwards into the atmosphere when released. This characteristic is essential to consider in safety protocols and gas detection systems.