Ryanair Initial Practice Exam

Which of the following is NOT a class of fire?

1. Class A: Flammable solids

2. Class B: Flammable liquids

3. Class G: Flammable vapors

4. Class F: Flammable fats

The correct answer is: Class G: Flammable vapors

In fire classification, the categorization of fires is essential for understanding how to effectively manage different fire types. Classes A, B, D, and F are widely recognized and used, each class representing a specific type of combustible material. Class A involves flammable solids, typically common materials like wood, paper, and textiles. Class B encompasses flammable liquids, including gasoline and oil, which require specific extinguishing methods, often involving foam or dry chemicals. Class F refers to flammable fats and oils, particularly those used in cooking, which demand specialized extinguishing agents due to their unique burning characteristics. Class G, however, is not an officially recognized class of fire. The terms used for fire classification usually adhere to the conventional designations, and flammable vapors may fall under different classifications. Therefore, identifying "Class G: Flammable vapors" demonstrates that it does not correspond to an established fire classification, thus making it the correct choice for the question regarding which is not a class of fire.