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प्रश्न
Wind does not help in the movement of which of the following?
विकल्प
Firki
Weather cock
Ceiling fan
Sailing yacht
उत्तर
Ceiling fan
Explanation:
Wind does not help in the movement of ceiling fan because it moves by electricity.
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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 |
What is wind?
Name the processes which maintain the balance between oxygen and carbon dioxide in the air. How is it done?
Write ‘true’ or ‘false for the following;
Air is a compound.
Tick (√) the correct alternative from the choice given for the following statement.
Rust is
______ soil has pH 7.
How is light scattered by the air?
Draw a neat labelled diagram for the following experiment.
To study the presence of carbon dioxide in air.
Name a device which uses wind energy to generate electricity.
Mention two advantages of wind energy.
