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प्रश्न
Tick (√) the most appropriate answer.
The humans pollute the air by :
पर्याय
burning a vast amount of coal
burning waste materials
using petrol and diesel vehicles
all the above
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उत्तर
all the above
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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.
Briefly state the importance of Carbon dioxide.
Fill in the blank
Green plants need ________________to prepare food.
The constituent of air that supports combustion is _____.
_____ gas turns lime water milky.
Give the components present in the air with a percentage?
The air in coastal areas have more oxygen.
A gas that neither burns nor supports burning is ______.
State whether the following statement is true or false. If false, correct them.
Plants consume oxygen for respiration.
State whether the following statement is true or false. If false, correct them.
Plants produce oxygen during the process of making their own food.
