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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
Tick (√) the most appropriate answer.
The humans pollute the air by :
Briefly state the importance of Oxygen.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
What are fuels?
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
The percentage of carbon dioxide in the air is between 0.2 to 0.4%.
List out the uses of carbon dioxide.
Nitrogen is essential for burning.
Match the following
| 1. | Oxygen | a. | Carbon dioxide |
| 2. | Azote | b. | Nitrogen |
| 3. | Solvay process | c. | Vital life |
| 4. | Gun powder | d. | No life |
Nitrogen is about two times more soluble in water than oxygen.
The components of air which are harmful to living beings are ______.
