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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 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 |
What is air pollution?
Name two air pollutants which cause acid rain.
Name two air pollutants which cause global warming.
Tick (√) the correct alternative from the choice given for the following statement.
Which of the following is not a greenhouse gas?
The capacity of air to hold moisture depends upon the ______ of the air.
Explain the term ‘air pollution’, with reference to air quality. State the sources of a few main pollutants.
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
The layer of air around the earth is known as ______.
