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प्रश्न
Tick (√) the most appropriate answer.
The humans pollute the air by :
विकल्प
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
Statement given below is incorrect. Write the correct statement :
During thunder and lightning, nitrogen and oxygen combine to form nitrogen dioxide gas.
Fill in the blank space by choosing the correct word from the given list.
List: sulphurous, nitric acid, red lead oxide paint, oxygen, phosphoric
Sulphur dioxide gas dissolves in water to form ___________ acid.
Give a reason why water droplets appear on the outer surface of a tumbler containing ice.
How will you prove that soil contains air in it?
Explain why mountaineers carry oxygen cylinders with them?
The constituent of air that supports combustion is _____.
Composition of the component of air ______ from place to place.
The amount of water vapour in the air is more in windy places than in other areas.
Give the components present in the air with a percentage?
Nitrogen is an essential element present in proteins and nucleic acids which are the building blocks of living things.
