Question

write a note on air pollution

Answer 1

$<b><u>$air pollution is caused by :particulate pollutant like dust particals , soots , aerosol , smoke.

gaseous pollutant like carbon dioxide , nitrogen dioxide , sulphur dioxide .
major cause of air pollution:

use of fossil fuel by automobiles

use of leaded petrol and dieselindustriesgarbage decompositionsmelterssmokestack of thermal power plant

Answer 2

$<b>hey there..!!$

here is ur ans..✏✏

• AIR POLLUTION :

Contamination of air by harmful substances like poisonous gases, smoke, particulate matter, microbes, etc. is called as air pollution.

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• REASONS OF AIR POLLUTION :

⚪Natural reasons :

1. Volcanic eruption : solid, gaseous and liquid materials emerge out through eruption. Ex. Hydrogen sulphide, sulphur dioxide, carbon dioxide, ammonium chloride, hydrogen, vapours, dust, etc.

2. Earthquake : Poisonous gases and water vapours from inside of earth are released into air.

3. Cyclones and dust storms : Dust, soil, garbage, pollens, microbes are mixed with air.

⚪Manmade reasons :

1. Fuel :

I. Burning of fuel like coal, timber, LPG, kerosene, diesel, petrol releases carbon dioxide, carbon monoxide, nitrogen oxide, sulphur dioxide, lead compounds, etc. are released in air.

II. Burning of solid waste, agricultural waste, etc. in open space causes air pollution.

2. Industrialization : Smoke is released in large quantity from various factories. Sulphur powder, Nitrogen oxide,cotten seed powder in air.

3. Atomic energy plants and blasts : Use of elements like uranium, thorium, graphite, plutonium release radiations in air and thus pollution occurs.

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• EFFECTS OF AIR POLLUTION ON PLANTS AND ANIMALS :

⚪PLANTS :

1. Stomata get closed.
2. Slowing down of rate of photosynthesis,
3. Growth is retarded. Leaves fall off or become yellow.

⚪ANIMALS :

1. Respiration is adversely affected.
2. Irritation of eyes.




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