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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
Match the following :
| Column A | Column B |
| (a) Global warming | 1. Hydrated ferric oxide |
| (b) Acid rain | 2. Manganese dioxide |
| (c) Rust | 3. Carbon dioxide |
| (d) Catalyst | 4. Methane |
| (e) Photosynthesis | 5. Nitrogen Dioxide |
Write the chemical name of Lime water
Write the chemical name of The white insoluble solid formed on the reaction of carbon dioxide with lime water.
How is air useful to agriculture?
Name two air pollutants which affect our health.
Fill in the blank
Polluted air is harmful to ____.
How is light scattered by the air?
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.
Cool and soothing wind: Breeze.
uproot trees wind: ______.
Explain the following observations very briefly
A firki does not rotate in a closed area.
