Which type of fire can be extinguished using water?

Water is effective in extinguishing paper fires because paper is primarily composed of cellulose, which can be cooled and smothered by water. When water is applied, it absorbs heat and reduces the temperature of the burning material below its ignition point, effectively stopping the combustion process.

In contrast, using water on electrical fires can be dangerous, as water conducts electricity and may lead to electric shock. Chemical fires can involve substances that react negatively with water, potentially causing explosive reactions. Grease fires are particularly hazardous when water is used because adding water can cause the burning grease to splatter, spreading the fire further. Thus, it is crucial to recognize the specific materials involved in a fire to choose the appropriate method for extinguishment.