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प्रश्न
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
उत्तर
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संबंधित प्रश्न
What was the ancient belief regarding the nature of matter ?
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
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 |
Name two important processes supported by oxygen present in air.
Name two air pollutants which cause acid rain.
Write ‘true’ or ‘false for the following;
Air is a compound.
State what do you understand by the term ‘air’. Explain its importance to mankind.
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
What should be done if the clothes of a person catch fire accidentally? Why?
Cool and soothing wind: Breeze.
uproot trees wind: ______.
