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प्रश्न
Give two uses of the following component present in air:
nitrogen
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उत्तर
Nitrogen: Present in air gets fixed up in the soil as nitrates used by plants for their growth and for the formation of protein an important nutrient for animals. It is used to make fertilizers and various nitrogenous products.
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संबंधित प्रश्न
How is air useful to scooters and cars.?
Why is it said that-
Air is a homogeneous mixture of various gases.
Name the important scientists and their studies which led to the discovery of the components of air.
Fill in the blank:
Nitrogen of the air is utilized by plants for formation of _____.
Name a device which uses wind energy to generate electricity.
What should be done if the clothes of a person catch fire accidentally? Why?
Air has no ______ & ______.
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
Cool and soothing wind: Breeze.
uproot trees wind: ______.
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
