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प्रश्न
Air is a mixture of many _______.
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उत्तर
Air is a mixture of many Gases.
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संबंधित प्रश्न
What is nitrogen-fixation?
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.
Write ‘True’ or ‘False’ in front of following statement.
Water containing dissolved carbon dioxide can dissolve marble.
With the help of a labeled diagram, describe a simple experiment to show the presence of oxygen and nitrogen in air using a piece of white phosphorus.
Give word equation for the following conversion:
Nitric oxide to nitrogen dioxide
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 |
How do astronauts breathe when they go beyond the earth’s atmosphere?
Nitrogen is essential for burning.
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
