Chlorine, Hydrogen, Methane, Oxygen, and Propane are examples of which class of gases?

The correct classification of Chlorine, Hydrogen, Methane, Oxygen, and Propane falls under Class 2 gases, which are classified as "Non-Toxic and Non-Flammable Gases." These gases are commonly found in various applications and processes.

Chlorine is used in disinfection and bleaching; Hydrogen, a key component in chemical reactions and fuel cells; Methane, primarily known as a fuel source; Oxygen, essential for combustion processes; and Propane, often used as a fuel in heating and cooking. Although these gases may vary in reactivity and applications, they share characteristics that place them in this category.

Class 1 gases typically include flammable gases and those that can lead to combustion, while Class 3 gases are often toxic or corrosive. Class 4 gases may include other classes of gases with specific properties but do not encompass the properties of Chlorine, Hydrogen, Methane, Oxygen, and Propane. The classification chosen reflects the non-toxic and commonly encountered nature of these particular gases in many environmental and industrial contexts.