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प्रश्न
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 |
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उत्तर
| 1. | Moving Air | Wind |
| 2. | Layer in which we live | Troposphere |
| 3. | Stratosphere | Ozone layer |
| 4. | Oxygen | Combustion |
| 5. | carbon-di-oxide | Photosynthesis |
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संबंधित प्रश्न
Tick (√) the most appropriate answer.
Which is not a polluting gas for the air?
Name and briefly explain four ways by which pollution of air caused by humans is minimised.
Write ‘true’ or ‘false for the following;
Carbon dioxide is given out during photosynthesis
Name the main component of air.
The balance of oxygen in atmosphere is maintained through photosynthesis in animals and respiration in plants.
The amount of water vapour in the air is more in windy places than in other areas.
Tri oxygen molecule is known as ______.
Match the following
| 1. | Nitrogen | a. | Acid rain |
| 2. | CO2 | b. | Global warming |
| 3. | Melting of glaciers | c. | Volcanic gases |
| 4. | Corrosion of bridges | d. | Aerated drinks |
Explain the following observations very briefly
An empty glass in fact is not empty.
Write just a few sentences for an imaginary situation if any of the following gases disappear from the atmosphere.
Oxygen
