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प्रश्न
How is air useful to scooters and cars.?
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उत्तर
Air filled tyres of cars move smoothly on road as there is less friction.
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संबंधित प्रश्न
Why can’t we see air?
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
Name two important processes supported by oxygen present in air.
How is air useful to water boats?
Name the following.
Inert gases in the air
Why is it said that-
Air is a homogeneous mixture of various gases.
What is the importance of air in transmission of sound?
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement.
The ______ makes the windmill rotate.
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 |
