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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
What is greenhouse effect?
What is wind?
What do you observe when Carbon dioxide gas is passed through lime water.
State two similarities and two differences between respiration and burning.
Name two air pollutants which cause global warming.
Write ‘true’ or ‘false for the following;
Air is a compound.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
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.
Draw a neat labelled diagram for the following experiment.
To demonstrate the burning of sulphur in a jar of oxygen.
What is global warming?
