Advertisements
Advertisements
प्रश्न
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
Advertisements
उत्तर
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:
carbon dioxide
Fill in the blank
Although we cannot see air, we can ___it.
Give a brief account of the discovery of air and the scientists involved.
While freezing, the ______ of water is lowered.
State the meaning of the term atmosphere.
Name the important scientists and their studies which led to the discovery of the components of air.
What should be done if the clothes of a person catch fire accidentally? Why?
Do sailors need the help of wind to sail?
Explain the following observations very briefly
A firki does not rotate in a closed area.
