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प्रश्न
What is wind?
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उत्तर
Fast-moving air is called wind.
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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 |
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Fill in the blank:
_____________ discovered the oxygen gas.
What do you observe when a burning candle is covered with an inverted jar.
Name two air pollutants which cause acid rain.
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
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.
The process of conversion of iron into hydrated form of oxides is called _______.
Wind does not help in the movement of which of the following?
