Advertisements
Advertisements
प्रश्न
Name the important scientists and their studies which led to the discovery of the components of air.
Advertisements
उत्तर
Discovery of air:
- John Mayow (1674) proved air has two components – active and inactive components.
- Lavoisier (1789) named active component as oxygen and inactive component as nitrogen
- Other scientists (1800’s) discovered noble gases, C02, water vapours.
APPEARS IN
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 |
Give two uses of the following component present in air:
nitrogen
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
Name three greenhouse gases.
Fill in the blank
Air is a ______ of gases
Describe a simple experiment with the help of a diagram to show that Air occupies space
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
How is light scattered by the air?
State the meaning of the term atmosphere.
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
