Which class of flammable materials includes paper and wood?

The classification of flammable materials is essential for understanding how to handle and extinguish fires safely. Class A materials are solid combustibles, such as paper, wood, cloth, and certain plastics. They ignite at normal temperatures and can produce significant flames when burning.

In contrast, Class B materials encompass flammable liquids and gases, such as gasoline and solvents. Class C materials involve electrical equipment and require special handling to prevent electrical hazards, while Class D pertains to combustible metals, which behave differently in fire situations. Understanding these classifications assists in effective fire prevention and response strategies in laboratory and medical environments.