Which of these statements accurately describes the various classes of fire extinguishers?

1. Class A fire extinguishers are suitable for fires involving ordinary combustible materials.
2. Class B fire extinguishers are suitable for fires involving flammable liquids.
3. Class C fire extinguishers are suitable for fires involving electrical equipment.
4. Class D fire extinguishers are suitable for fires involving combustible metals.

Understanding the various classes of fire extinguishers is crucial for selecting the appropriate extinguisher to combat different types of fires effectively. the correct option is 4.

Explanation:

Class A fire extinguishers are designed for fires involving ordinary combustible materials like wood, paper, and cloth. Class B fire extinguishers are suitable for fires involving flammable liquids such as gasoline, oil, and grease. Class C fire extinguishers are intended for fires involving electrical equipment. Class D fire extinguishers are specifically designed for fires involving combustible metals like magnesium, sodium, and titanium.

These metals require specialized extinguishing agents that are different from those used for other types of fires. Understanding the various classes of fire extinguishers is crucial for selecting the appropriate extinguisher to combat different types of fires effectively. Class D fire extinguishers are essential in environments where combustible metals are present to ensure the safety of individuals and property.