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प्रश्न
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Oxygen
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उत्तर
Almost all the living organisms present on earth inhale oxygen or use oxygen in the food making processes (plants use oxygen for photosynthesis). Hence, it is obvious that oxygen is an essential element for survival and there will be no life in the absence of oxygen.
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संबंधित प्रश्न
“Air is a mixture”. Support this statement citing at least three evidences.
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
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Write ‘True’ or ‘False’ in front of following statement.
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Write fully balanced equation for the following :
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_______ and ______ are the two gases, which when taken together, make up about 99 percentage of air.
- Nitrogen
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______ present in the air is needed for respiration.
A ______ gas that is used to remove carbon impurities from the steel.
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