List three common types of fire extinguishers and the class of fire each is intended for.

• A. Water (Class A), Dry chemical ABC (A, B, C), CO2 (B, C).
• B. Water (B), Dry chemical ABC (A, D, E), CO2 (A, B).
• C. Water (C), Dry chemical ABC (A, B), CO2 (A, B, C).
• D. Water (D), Dry chemical ABC (B, C), CO2 (K).

Answer: (A)

Understanding which fire extinguisher to use depends on matching the extinguisher type to the fire class. Water extinguishers are effective on ordinary combustibles—like paper, wood, and textiles—so they’re used for Class A fires. The dry chemical ABC extinguisher is versatile and designed to handle the three major types of fires: Class A, B (flammable liquids), and C (electrical equipment), making it a broad, multi-purpose option. Carbon dioxide extinguishers smother fires by displacing air and are suitable for fires involving electrical equipment and flammable liquids—Class B and Class C—but not ideal for ordinary solid-fuel fires (Class A). So, listing Water for Class A, Dry chemical ABC for A, B, and C, and CO2 for B and C reflects how these common extinguishers are typically applied.