A MC-331 vehicle is used for transporting which type of gas?

The MC-331 vehicle is specifically designed for the transport of liquefied gases under pressure, which aligns with the correct answer. This type of tank truck has a cylindrical shape and is constructed to handle the high pressures and unique properties of liquefied gases, such as propane, butane, and other similar substances.

The design of the MC-331 includes insulation to regulate temperature and prevent vaporization, making it ideal for transporting gases that are kept in a liquid state under pressure. This vehicle is distinct from those used for corrosive liquids, dry bulk solids, or cryogenic gases, each of which has specific tank requirements that differ from the needs of liquefied gases.

Understanding the application and design of the MC-331 helps to appreciate why it is dedicated to liquefied gases, ensuring safe transportation within its intended operational parameters.