Which of the following is NOT a class of fire?

In fire classification, understanding the types of fires is crucial for effective firefighting and safety measures. Fires are categorized primarily into five classes based on the material that is burning. Classes A, B, and D are widely recognized and used in firefighting protocols.

Class A fires involve ordinary combustibles such as wood, paper, and cloth. Class B fires are associated with flammable liquids and gases, including oil and gasoline. Class D fires involve combustible metals, which require special extinguishing agents.

Class C is designated for electrical fires, while Class K is specific to cooking oils and fats. However, there is no recognized Class Gamma for fire classification. Therefore, identifying Class Gamma as not applicable to fire types distinguishes it from the established classes, making it the correct choice in this context.

In summary, since Class Gamma does not exist in the fire classification system, it is correctly identified as not being a class of fire.