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प्रश्न
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
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उत्तर
| Nitrogen | Fertilizer |
| Oxygen | Respiration in living animals |
| Carbon dioxide | Fire extinguisher |
| Dry ice | Refrigerator |
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संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
_______ gas is used for filling weather observation balloons.
Name and briefly explain four ways by which pollution of air is caused by humans.
What are the two necessary conditions for rusting of iron?
State what would happen, if the air above the earth contained mainly oxygen and no nitrogen
Give word equation for the following conversion:
Nitric acid to soluble nitrates in the soil
Tabulate the various components of air, including the components with variable composition.
How will you prove that soil contains air in it?
List uses of oxygen.
______ is necessary for all acids.
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 |
