Fires are categorized into _____ classes.

Fires are categorized into _____ classes.

• A. Three
• B. Five
• C. Four
• D. Six

Answer: (B)

Fire classifications are based on the type of fuel or energy source feeding the fire. In standard safety practice, fires are grouped into five categories: ordinary combustibles, flammable liquids, energized electrical equipment, combustible metals, and cooking oils. Each class requires a different approach to extinguishment, so recognizing the five categories helps determine the right extinguisher and tactics. The count is five because these categories cover the major fire hazards encountered in most environments. If you tried to categorize with three, four, or six, you’d either miss one of the common hazards (like electrical fires, metal fires, or kitchen oil fires) or introduce categories that aren’t part of the widely adopted system.

Fire classifications are based on the type of fuel or energy source feeding the fire. In standard safety practice, fires are grouped into five categories: ordinary combustibles, flammable liquids, energized electrical equipment, combustible metals, and cooking oils. Each class requires a different approach to extinguishment, so recognizing the five categories helps determine the right extinguisher and tactics. The count is five because these categories cover the major fire hazards encountered in most environments. If you tried to categorize with three, four, or six, you’d either miss one of the common hazards (like electrical fires, metal fires, or kitchen oil fires) or introduce categories that aren’t part of the widely adopted system.