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प्रश्न
How are clouds formed?
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उत्तर
Clouds are formed by an enormous collection of tiny droplets that are formed by the condensation of water vapours in the air. Water vapours are condensed when dust and other suspended particles of the air act as a nucleus for them. These particles condense the vapours into tiny water droplets.
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संबंधित प्रश्न
What is the major source of fresh water in the city/town/village where you live?
Name the gas produced when chlorine is dissolved in water and exposed to sunlight.
Name the gas produced when a piece of calcium is added to water.
What is the effect of impurities present in the water on the melting point and boiling point of water?
The water in a lake is called ground water.
Give reason for the following:
The percentage of oxygen, in air dissolved in water, is higher than the percentage of oxygen in ordinary air.
State the meaning of the term ‘water pollution’. State how you would find out, the different sources of pollution of water bodies in the locality.
37% of our brain‛s mass consists of water.
Match the following
| 1. | Flood | Lake |
| 2. | Surface water | Evaporation |
| 3. | Sunlight | Water vapour |
| 4. | Cloud | Pole |
| 5. | Frozen water | Increased rainfall |
A jumbled word is given here. Write the correct form of the word.
QUIFERA
