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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 air pollution?
Name two air pollutants which affect our health.
Name three greenhouse gases.
Tick (√) the correct alternative from the choice given for the following statement.
Air pollution is due to the
Give a brief account of the discovery of air and the scientists involved.
Name the important scientists and their studies which led to the discovery of the components of air.
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
What is wind energy?
