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प्रश्न
Fill in the blank
Although we cannot see air, we can ___it.
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उत्तर
Although we cannot see air, we can feel it.
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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 observeation balloons. | (b) Carbonic acid |
| 3. An acid formed by the dissolution of sulphur dioxide gas in water. | (c) Sulphuric 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:
water vapour
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
______ soil has pH 7.
Why is it said that-
Air is a homogeneous mixture of various gases.
How is light scattered by the air?
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
List five activities that are possible due to the presence of air.
About 78% of the volume of air is ______.
Wind does not help in the movement of which of the following?
