32 Carbon dioxide gas is used to extinguish the fire. Give reason.

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Solution

Carbon dioxide does not support combustion.
Combustion occurs in the presence of oxygen.
When Carbon dioxide is sprayed on a burning object, it stops the supply of oxygen.
Carbon dioxide is extremely cold as it comes out of the extinguisher, so it cools the fuel also.

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Similar questions

Give reasons for the following :

(a) An excess of carbon dioxide increases the temperature of the earth.

(b) Soda acid and foam type of fire extinguishers are not used for extinguishing electrical fires.

Give scientific reasons.

(a) Diamond is used to cut metals.

(b) Carbon dioxide is used for putting out fires.

Assertion: Carbon dioxide is used in fire extinguishers.

Reason: Carbon dioxide is a colourless and odourless gas.

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