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प्रश्न
In a number of musical instruments, air plays an important role. Can you name some such instruments?
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उत्तर
Such instruments are flute, mouth organ, trumpet, shehnai and harmonium.
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संबंधित प्रश्न
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 is wind?
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
What is meant by ozone depletion?
Why is it said that-
Air is a homogeneous mixture of various gases.
Mention two advantages of wind energy.
What is global warming?
Cool and soothing wind: Breeze.
uproot trees wind: ______.
Which of the following statements is incorrect?
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
