Which of the following is NOT one of the four major container types?

Which of the following is NOT one of the four major container types?

• A. Pressure
• B. Cryogenic
• C. Liquid Holding
• D. Gas Holding

Answer: (D)

The concept being tested is how hazmat packaging is categorized by container design. In this framework, containers are grouped by how they contain materials under various conditions: pressure containers are built to withstand internal pressures, cryogenic containers are for materials kept at extremely low temperatures, and liquid-holding containers are used for liquids that aren’t stored under pressure. Gas holding isn’t treated as a separate category because gases are shipped in pressure-rated vessels or in configurations that fall under the pressure container category rather than forming a distinct “gas holding” type. So the first three options fit the recognized container types, while gas holding isn’t considered its own major type.

The concept being tested is how hazmat packaging is categorized by container design. In this framework, containers are grouped by how they contain materials under various conditions: pressure containers are built to withstand internal pressures, cryogenic containers are for materials kept at extremely low temperatures, and liquid-holding containers are used for liquids that aren’t stored under pressure. Gas holding isn’t treated as a separate category because gases are shipped in pressure-rated vessels or in configurations that fall under the pressure container category rather than forming a distinct “gas holding” type. So the first three options fit the recognized container types, while gas holding isn’t considered its own major type.