Advertisements
Advertisements
प्रश्न
Explain how CO2 is able to control fires.
Advertisements
उत्तर
CO2 is a non-combustible gas and extinguishes fire in two ways:
- Since it is heavier than oxygen, it covers the fire like a blanket and cuts off the contact between oxygen and fuel.
- In cylinders, CO2 is kept in the liquid form. When released, it expands enormously and cools down. This brings down the temperature of the fuel, which helps in controlling the fire.
APPEARS IN
संबंधित प्रश्न
Give reasons.
Water is not used to control fires involving electrical equipment.
It is difficult to burn a heap of green leaves but dry leaves catch fire easily. Explain
Fire produced by oil cannot be controlled by ______.
If a person’s clothes catches fire, the best way to extinguish the fire is to
Choose the incorrect statement from the following.
Forest fires are usually due to
State whether the following statement is True or False.
Carbon dioxide is an excellent fire extinguisher.
Manu was heating oil to fry potato chips. The cooking oil all of a sudden caught fire, he poured water to extinguish the fire. Do you think, this action was suitable? If yes, why? If not, why not? In such a condition what should Manu have done?
What are the classes of fire?
Give an example of class B fires.
Mention the conditions necessary for producing fire.
