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प्रश्न
What is wind?
एका वाक्यात उत्तर
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उत्तर
Fast-moving air is called wind.
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संबंधित प्रश्न
What was the ancient belief regarding the nature of matter ?
Match the statements in Column A, with those in Column B.
| Column A | Column B |
| 1. Largest Constituent of air, which dilutes the activity of oxygen. |
(a) Oxygen |
| 2. A gas used for filling weather observation balloons. | (b) carbon acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphur acid |
| 4. An acid formed by the dissolution of carbon dioxide in water. | (d) Helium |
| 5. A gas vital for respiration. | (e) Nitrogen |
What do you observe when Carbon dioxide gas is passed through lime water.
How is air useful to scooters and cars.?
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
State what do you understand by the term ‘air’. Explain its importance to mankind.
Answer in your own words.
What are the various constituents of air? Write their uses.
______ soil has pH 7.
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
Air has no ______ & ______.
