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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.
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उत्तर
20.9%, oxygen is called active air because it supports life on earth. It is essential for the process of combustion.
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संबंधित प्रश्न
Answer the question put against the following constituents of air:
Nitrogen : Explain its significance for plants and animals.
Write ‘true’ or ‘false for the following;
The major component of air is oxygen.
Name the following:
The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.
Name the main component of air.
Match the following
| 1. | Moving Air | Photosynthesis |
| 2. | Layer in which we live | Troposphere |
| 3. | Stratosphere | Wind |
| 4. | Oxygen | Ozone layer |
| 5. | carbon-di-oxide | Combustion |
Composition of the component of air ______ from place to place.
Give the components present in the air with a percentage?
Tri oxygen molecule is known as ______.
Carbon dioxide gas is ______.
Observe the picture given in Fig. carefully and answer the following questions.
Can you comment on the air quality of the place shown in Fig?
