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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
“Air is a mixture”. Support this statement citing at least three evidences.
Fill in the blanks :
_______ and ______ are the most common air pollutants.
What do you understand by the term polluted air?
What do you observe when Ice cold water is filled in a glass tumbler.
What are the two necessary conditions for rusting of iron?
State the full form of LPG and CNG? How are the two different in their composition?
Give a reason why nitrogen is filled in food packets and not oxygen.
State the utility of oxygen for respiration in living organisms
Composition of the component of air ______ from place to place.
Match the following:
| 1. | More industrial cities | a. | dust particles |
| 2. | Coastal areas | b. | Humidity |
| 3. | Rainy season | c. | Carbon dioxide |
| 4. | Windy places | d. | water vapour |
