If carbon dioxid is heavier than air how can it form blanket aroung the fire to extinguish it?

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Solution

Oxygen is necessary for burning. The CO2 which is less dense than oxygen and forms a layer between the substance and the oxygen . It breaks the connection between the substance and the oxygen gas and hence the it behaves as fire extinguisher

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Similar questions

Which of the following statement is not correct about carbon dioxide acting as a fire extinguisher for electrical fires ?

(a) it is heavier than air

(b) it is lighter than air

(d) it does not support combustion

Carbon dioxide is generally heavier than oxygen and nitrogen. Why do it not form lower layer in the atmosphere?

Manisha took some vinegar in a test tube and added some baking powder to it . Then she lit a matchstick and brought it near the mouth of the test tube . The flame of the matchstick got extinguished.

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(A) Carbon dioxide gas does not support burning .

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