Some fire-extinguishers are filled with a gas called carbon dioxide. You can use these to put out
fires which have been caused either by electrical equipment of flammable liquids. if the fire has been caused by electrical equipment, switch the equipment off and point the extinguishers straight at the fire. If the fire has been caused by liquid like petrol, point the extinguishers at the nearest edge of the fire, and move it from side to side.