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प्रश्न
Which of the following statements is incorrect?
विकल्प
All living things require air to breathe.
We can feel air but we cannot see it.
Moving air makes it possible to fly a kite.
Air is present everywhere but not in soil.
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उत्तर
Air is present everywhere but not in soil.
Explanation:
Air is omnipresent and is present in soil too. This can be inferred by adding water to a pot filled with a lump of soil. After adding water it can be observed that the soil absorbs all the water and air bubbles are formed. These air bubbles show the escaping air.
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संबंधित प्रश्न
Give two uses of the following component present in air:
water vapour
Fill in the blank
Air is a ______ of gases
Tick (√) the correct alternative from the choice given for the following statement.
Air consists of
Tick (√) the correct alternative from the choice given for the following statement.
Air pollution is due to the
What will happen if the number of vehicles and factories in your surroundings increases?
What will happen if the amount of water vapour in the air increases.
State the meaning of the term atmosphere.
Match the statements in List I with the correct answer from List II.
| List I | List II |
| 1. The constituent of air which is around 0.02% | A: Nitrogen |
| 2. The constituent of air which is inert or unreactive | B: Oxygen |
| 3. The constituent of air which is non-combustible, but supports combustion. |
C: Sulphur dioxide |
| 4. A pollutant in air responsible for acid rain | D: Carbon dioxide |
| 5. The main rare gas present in air. | E: Argon |
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
