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प्रश्न
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
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उत्तर
The main components of the air are :
- Nitrogen
- Oxygen
Composition of air by volume:
Nitrogen: 78% or 4/5 th
Oxygen: 21% or 1/5 th
Carbon dioxide: 0.03 - 0.04%
Inert gases: 0.9%
[Water vapours, dust particles, other impurities]: variable
OR
| Gases | Percentage | Figure |
| Nitrogen | 78% |  |
| Oxygen | 21% | |
| Carbon dioxide | 0.03 - 0.04% | |
| Inert gases | 0.9% | |
| Water vapour | Varies | |
| Dust particles | Varies | |
| Other impurities | Varies |
Air is a mixture whose composition varies at different intervals of time and different places of the world.
संबंधित प्रश्न
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
Name the main components of air.
Write ‘True’ or ‘False’ in front of following statement.
Enamelling is the process of baking a mixture of silicates on the surface of aluminium at a high temperature.
What are the main components of air?
Fill in the blanks
Oxygen is used in ___________the food to get _______.
State what would happen, if the air above the earth contained mainly oxygen and no nitrogen
Name the following:
The product of respiration released in exhaled air, other than carbon dioxide.
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The mesosphere in the atmosphere, contains most of the air, fit for respiration
Nitrogen is used in the food packaging industry because it _____.
Whales come up to the water surface to breathe in oxygen.
