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प्रश्न
What is not true about air?
विकल्प
It makes the windmill rotate.
It helps in the movements of aeroplanes.
Birds can fly due to presence of air.
It has no role in water cycle.
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उत्तर
It has no role in water cycle.
Explanation:
During the process of evaporation, the vapours of water are risen up by air to form clouds.
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संबंधित प्रश्न
Fill in the blank space by choosing the correct word from the given list.
List: oxygen, carbonic, suIphurUioxide gas, precipitation, helium
Dust particles help in the ________ of water vapour in air.
What do you observe when Ice cold water is filled in a glass tumbler.
State the utility of oxygen for respiration in living organisms
Name three different appliances where air is utilized.
Compare the three main components of air i.e. nitrogen, oxygen and carbon dioxide with reference to their density and solubility, nature and reactivity.
What are the components of air?
______ is the percentage of nitrogen in air.
Inhaled air contains a large amount of carbon-di-oxide.
Write about the reaction of nitrogen with non metals.
______ is necessary for all acids.
