Which class of fire involves ordinary combustibles such as wood and paper?

Which class of fire involves ordinary combustibles such as wood and paper?

• A. Class A
• B. Class B
• C. Class C
• D. Class D

Answer: (A)

The main idea is identifying which fire involves ordinary combustibles. Fires fueled by ordinary materials like wood, paper, cardboard, and cloth fall into Class A. These materials burn and leave ash, and the simplest way to stop them is cooling with water, which lowers the fuel and surrounding temperature to prevent ignition from restarting. Other classes cover different fuels: Class B is flammable liquids, Class C is energized electrical equipment, and Class D is combustible metals, each requiring specific extinguishing approaches. So for ordinary combustibles such as wood and paper, the appropriate class is Class A.

The main idea is identifying which fire involves ordinary combustibles. Fires fueled by ordinary materials like wood, paper, cardboard, and cloth fall into Class A. These materials burn and leave ash, and the simplest way to stop them is cooling with water, which lowers the fuel and surrounding temperature to prevent ignition from restarting. Other classes cover different fuels: Class B is flammable liquids, Class C is energized electrical equipment, and Class D is combustible metals, each requiring specific extinguishing approaches. So for ordinary combustibles such as wood and paper, the appropriate class is Class A.