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प्रश्न
What is the significance of water vapour in air?
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उत्तर
Significance of water vapour in atmosphere is as follows:
- Presence of water vapour in air determines the climatic conditions. Excessive water vapour causes rain. They also produce snow, fog, mist, hails and other phenomenon, depending upon the temperature.
- The presence of water vapour controls the rate of evaporation from the plants and animals.
- The presence of water vapour is very essential for the growth of plants.
- It is very essential for the health and comfort of animals.
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संबंधित प्रश्न
Answer the question put against the following constituents of air :
Carbon dioxide : “Although carbon dioxide plays no role in respiration, all life would come to an end if there is no carbon dioxide in air.” Support this statement with relevant facts.
Write ‘True’ or ‘False’ in front of following statement.
The trapping of solar heat energy in the earth’s atmosphere is called greenhouse effect.
Classify Carbon dioxide. Also give a balanced equation to prepare it.
Name the components of air with their approximate percentage by volume in air. Does the percentage by volume of each component remain the same, in the atmosphere of different parts of the world? Explain with reasons.
Name the following:
An inert gas which has a low boiling point and is used for producing very low temperatures
What is the presence of harmful substance in the air called?
Carbon dioxide gas is ______.
______ gas is essential for the proper growth of all plants.
______ exists in nature as silicates, carbonates, oxides, and water. It also exists in a free state as part of the air in the atmosphere.
Assertion: Carbon dioxide occurs as carbonates in nature.
Reason: Carbon dioxide can exist as a liquid at atmospheric pressure.
