Which of the following is an example of Class 2: Compressed Gases?

Class 2: Compressed Gases refers to materials that are stored under pressure and can include gases that may be flammable, non-flammable, or toxic. Helium is a prime example of a compressed gas, as it is commonly stored in pressurized cylinders for various applications, such as inflating balloons or as a shielding gas in welding.

The other options represent different categories of materials. Aviation fuel falls under flammable liquids, gunpowder is classified as an explosive, and safety matches are categorized as ignitable solids. Each of these materials poses different risks and is governed by different regulations compared to compressed gases. Understanding the classification of hazardous materials helps ensure appropriate handling, storage, and transportation procedures.