List three types of fire extinguishers commonly used in workplaces and describe the classes of fires they are designed to extinguish?

1. Water fire extinguisher: Water fire extinguishers are designed to extinguish Class A fires, which involve ordinary combustible materials such as wood, paper, and cloth.

2. CO2 fire extinguisher: CO2 fire extinguishers are designed to extinguish Class B fires, which involve flammable liquids such as gasoline, oil, and grease, as well as Class C fires, which involve energized electrical equipment.

3. Dry chemical fire extinguisher: Dry chemical fire extinguishers are designed to extinguish Class A, B, and C fires. They are versatile and can be used on a variety of materials, including wood, paper, flammable liquids, and energized electrical equipment.

1. Water Extinguishers: Extinguish Class A fires ( ordinary combustibles like paper, wood, and cloth) by cooling the fuel below its ignition temperature.

2. Dry Chemical Extinguishers: Extinguish Class B (flammable liquids such as gasoline, oil, and grease) and Class C (electrical fires) by smothering the fire and interrupting the chemical reaction. They can also be used on Class A fires.

3. Carbon Dioxide Extinguishers: Extinguish Class B and Class C fires by displacing oxygen in the air and creating an inert atmosphere that prevents combustion.