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प्रश्न
Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?
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उत्तर
The reasons behind fire extinguishers throw a stream of CO while putting off fire:-
- CO2 is a colorless and in normal concentrations, odorless gas. It doesn’t react with burning materials, so it doesn’t create any toxic or other by-products while putting off the fire.
- Carbon dioxide doesn’t conduct electricity, making it an ideal fire suppressant for use in places where a large amount of electricity may be present.
- CO2 acts on fires in two ways: The release of the gas under pressure has a cooling effect, as can be seen by the resulting mist cloud and ice particles; the gas also displaces the oxygen that’s necessary to maintain combustion.
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संबंधित प्रश्न
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
Fill in the blank :
________ is the most abundant inert gas present in air.
Write ‘True’ or ‘False’ in front of following statement.
The area where a lot of fuel burns has more percentage of carbon dioxide.
Fill in the blanks
Plants and animals maintain the balance of carbon ___________and _________ in the air.
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
Give word equation for the following conversion:
Nitric acid to soluble nitrates in the soil
Why is air considered as a mixture?
Whales come up to the water surface to breathe in oxygen.
How to show the presence of carbon-di-oxide in the air?
Make sentences using the given set of words.
99%, oxygen, nitrogen, air, together
