Understanding Carbon Dioxide's Role in Fire Control

The session discusses how carbon dioxide (CO2) is used to control fires in daily life. CO2 is heavier than air and, when sprayed, covers the fire like a blanket, reducing the temperature of the fuel. This blanket effect prevents contact between fuel and oxygen, stopping the combustion process and bringing the fire under control.

What is the primary reason people use carbon dioxide during fire accidents?

• It is lighter than air.

• It can cover fires like a blanket.

• It is a good conductor of electricity.

• It increases the temperature of the fire.

Why is carbon dioxide considered effective in controlling fires?

• It is flammable.

• It is a source of oxygen.

• It is heavier than air.

• It evaporates quickly.

How does carbon dioxide help in reducing the temperature of the fuel?

• By providing oxygen.

• By increasing combustion.

• By reflecting sunlight.

• By absorbing heat.

What happens when there is no contact between fuel and oxygen?

• The combustion process stops.

• The oxygen level increases.

• The fire intensifies.

• The fuel evaporates.

What role does carbon dioxide play in the combustion process?

• It prevents combustion by blocking oxygen.

• It accelerates combustion.

• It provides additional fuel.

• It acts as a catalyst.