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प्रश्न
What is air pollution ? What are the harmful effects of sulphur dioxide, nitrogen dioxide and hydrogen sulphide present in the air ?
उत्तर
Air Pollution : Air is polluted by natural processes like volcanic eruption, crop pollination, etc. mostly it is polluted by human activities like burning of coal, wood, diesel oil, kerosene, petrol etc.
Fossil fuels contain sulphur and nitrogen as impurities. When fuels bum these substances combine with air to produce gasses like sulphur dioxide, nitrogen oxide and hydrogen sulphide. They cause many serious respiratory problems. They can destroy the ozone layer, which protects us from the ultra violet radiations of the Sun. They also cause acid rain, which damages crops and buildings.
APPEARS IN
संबंधित प्रश्न
Answer the question put against the following constituents of air:
Nitrogen : Explain its significance for plants and animals.
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.
Write fully balanced equation for the following :
CO2 + H2O →
Write down the composition of three main gases present in air by volume.
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 is the composition of air?
______ is the main component of air.
Which gas is essential for burning?
Carbon dioxide gas is ______.
Metals like magnesium, iron, and sodium burn in oxygen and give basic ______.
