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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.
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उत्तर
Dust particles help in the precipitation of water vapour in air.
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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.
Complete and balance the following equation
CaO + H2O →
Fill in the blank
The supporter of combustion in air is _____.
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 |
Arrange the following statements in correct sequence
- Plants manufacture food by a process called photosynthesis.
- Plants require energy for their growth.
- Plants take in oxygen and release carbon dioxide just as animals.
- Plants take carbon dioxide from the atmosphere, use chlorophyll in the presence of sunlight and prepare food.
- Such oxygen is available to animals and human beings for breathing.
- During this process, oxygen is released by plants.
Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?
What was the old name of nitrogen?
Write a note on nitrogen.
The air in coastal areas have more oxygen.
State whether the following statement is true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.
