Advertisements
Advertisements
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.
Advertisements
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 :
Oxygen : What is the percentage proportion of oxygen in air ? Why is oxygen called active air.
Briefly state the importance of Oxygen.
Classify Carbon dioxide. Also give a balanced equation to prepare it.
Name the following:
The product of respiration released in exhaled air, other than carbon dioxide.
What happens if the percentage of oxygen in the air reaches to 70%?
The balance of oxygen in atmosphere is maintained through photosynthesis in animals and respiration in plants.
How do the roots of land plants get oxygen for breathing?
What was the old name of nitrogen?
How to show the presence of carbon-di-oxide in the air?
Boojho took an empty plastic bottle, turned it upside down and dipped its open mouth into a bucket filled with water. He then tilted the bottle slightly and made the following observations.
- Bubbles of air came out from the bottle.
- Some water entered the bottle.
- Nitrogen gas came out in the form of bubbles and oxygen got dissolved in water.
- No bubbles formed, only water entered the bottle.
Which observations is/are correct?
