You have seen homes, shops and factories caught in fire news, or in newspaper, or in real. Do you think how can the fire be controlled from spreding? Generally, water is used to control fire. Water brings down the temperature of the combustible substance below its ignition temperature. The water vapour surrounds the combustible material, thus helping in cutting off the supply of air. Fire produced by the burning of oil or petrol cannot be controlled by throwing water on it because water being heavier than oil, settles down the oil and oil continues to burn. In the case of fires caused by burning liquid fuels, such as kerosene oil can be controlled by throwing sand or soil over it.
Read the below questions and try to answer them.
What should you do if you use a carbon dioxide fire extinguisher?

Explanation

When using a `CO_(2)` extinguisher, discharge and then walk away from the area to avoid asphyxiation. Carbon dioxide extinguishers work by displacing / replacing oxygen.