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प्रश्न
Give two uses of the following component present in air:
oxygen
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उत्तर
Oxygen: For respiration and breathing no life is possible without oxygen. Oxygen is the most vital component which is responsible for two most important processes,
- Respiration and
- Combustion.
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संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
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 |
Why can’t we see air?
What do you observe when a burning candle is covered with an inverted jar.
Define the following:
Respiration
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
Mention two advantages of wind energy.
Which of the following statements is incorrect?
