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प्रश्न
Tick (√) the most appropriate answer.
A gas which dilutes the activity of oxygen in air is:
पर्याय
carbon dioxide
sulphur dioxide
nitrogen
noble gases
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उत्तर
nitrogen
APPEARS IN
संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
Dust particles help in the ________ of water vapour 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.
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Give reason:
A burning candle stops burning if covered with a glass tumbler
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
______ gas is given to the patients having breathing problems.
Nitrogen is essential for burning.
Write a note on nitrogen.
During respiration, carbon-di-oxide is exhaled out of the body through the ______.
The amount of water vapour in the air is more in windy places than in other areas.
