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प्रश्न
Name the following:
The type of bacteria which directly absorb nitrogen from the air and converted soluble nitrates in the soil.
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उत्तर
Symbiotic bacteria.
संबंधित प्रश्न
Answer the question put against the following constituents of air :
Water vapours : Explain their role in modifying the earth’s climate.
Fill in the blank :
________ is the most abundant inert gas present in air.
Classify Carbon monoxide. Also give a balanced equation to prepare it.
Fill in the blank
The reddish-brown powder on the surface of iron nails exposed to air and moisture is called _____.
Give word equation for the following conversion:
Nitrogen dioxide to nitric acid
Tabulate the various components of air, including the components with variable composition.
How will you prove that soil contains air in it?
Can you guess why fire extinguishers throw a stream of carbon-di-oxide while putting - off the fire?
Match the following.
| Nitrogen | Respiration in living animals |
| Oxygen | Fertilizer |
| Carbon dioxide | Refrigerator |
| Dry ice | Fire extinguisher |
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
