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प्रश्न
What is wind?
उत्तर
Fast-moving air is called wind.
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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 |
What do you observe when Carbon dioxide gas is passed through lime water.
Name two air pollutants which affect our health.
Fill in the blank
Although we cannot see air, we can ___it.
Draw a neat labelled diagram for the following experiment.
To demonstrate the burning of sulphur in a jar of oxygen.
Complete the statement given below by filling in the blank with the correct word/s from the word/s given below
____________ is an example of a pollutant present in the air.
List five activities that are possible due to the presence of air.
Cool and soothing wind: Breeze.
uproot trees wind: ______.
A list of words is given in a box. Use appropriate words to fill up the blank in the following statement
Air is a ______ of some gases.
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
