Tag: air pollution and its effects
Questions Related to air pollution and its effects
Mycorrhizal fungi, which form a mutualistic association with many plant roots, are particularly sensitive to the effects of acid rain. These fungi facilitate the absorption of water and nutrients by the plants; in turn, the plants provide sugars and amino acids without which the fungi could not survive.
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One partner benefits from the association and the other partner is harmed
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One partner benefits from the association and the other partner is neither harmed nor helped
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One partner preys upon the other partner
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Both partners benefit from the association
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Neither partner benefits from the association
Mycorrhizae are the symbiotic fungi that reside in roots of higher plants and increase soil fertility by nitrogen fixation and also increase water and mineral absorption by plant roots. Fungi are beneffited by this association as they get sugar and amino acids. Both partners are benefitted; association is symbiosis.
Changes in the chemical nature of Taj Mahal is due to
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Chemical from oil refinery
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Acid rain
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Floods from river Yamuna
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Rise in temperature
$\displaystyle { SO } _{ 2 }$ in the air causes
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Global warming
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Eutrophication of lakes
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Depletion of the ozone layer
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Magnification in the food chain
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Acid rain
Sulphur dioxide (SO$ _2$) is an air pollutant. When this gas comes in contact with water droplets, it gets converted to mild sulphuric acid which is acidic. Hence in areas of pollution with SO$ _2$ gas, normal rain water gets converted to sulphuric acid. This is called as acid rain. Acid rain generally leads to weathering of buildings, corrosion of metals, and peeling of paints on surfaces.
The Mathura refinery smoke is thought to reduce the shine of Taj mahal by
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Increasing U.V radiations
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Acid rain
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3, 4 benzpyrene
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All of the above
The reduction in the shine of Taj mahal is understood by the term called as marble cancer. Various pollutants are emitted by the industries situated near Agra, specially the Mathura refinery. These pollutants react with the marble forming a fine layer of dust over it and also various gases like sulphur dioxide and nitrous oxide combines with moisture and settles down as acid rain on the walls of the monument thus provides a yellow tingle to its pure white marble.
Acid rain is caused due to increase in concentration of (in atmosphere)
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$SO _2$ and $NO _2$
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CO and $CO _2$
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CO and $SO _3$
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$O _3$ and dust
Acid rain is rainfall and other forms of precipitation with a pH less than 5. Acid rain is caused by large scale emission of acidic gases into the atmosphere from thermal power plants, industries, and automobiles. The common ones are sulphur dioxide, nitrogen oxides, volatile organic carbons and hydrogen chloride. These oxides combine with water to form acids.
Acid rains are produced by
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Excess $NO _2$ and $SO _2$ from burning fossil fuels
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Excess production of $NH _3$ by industry and coal gas
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Excess release of carbon monoxide by incomplete combustion
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Excess formation of $CO _2$ by combustion and animal respiration
When the industrial activities use the fossil fuels, the excess of this usage results in the release of oxides of nitrogen and oxides of sulphur. These condense around in the troposphere and react with water to form the nitric acid, nitrous acid, and sulphuric acid. These acids precipitate with rain to form the acid rain. Acid rain is corrosive to the tissues, buildings etc.
Corrosion of statues and monuments occurs due to
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Photochemical smog
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Carbon monoxide
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Acid rain
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Methane
Acid rain is rich in sulphuric acid and nitric acid. These acids have corrosive effects on the building material. They get deposited on the limestone, sandstone, marble etc. and increase their corrosion when exposed to the rain and fog.
Which of the following gases cause acid rain?
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Carbon monoxide and carbon dioxide
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Sulphur dioxide and oxides of nitrogen
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Oxides of nitrogen and carbon dioxide
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None of these
The fossils burn in the atmosphere and forms oxides. These oxides combine with the precipitation and forms acids. This acid falls on earth as acid rain. The acid rain harms the flora and fauna. It also causes skin diseases.
Etching of marble, limestone, jewellery, etc., is caused by pollutant.
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$CO _2$
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CO
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$SO _2$
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$CH _4$
Acidic compounds such as sulphuric acids and nitric acids are corrosive in nature and cause etching of marble, limestone and jewellery.
Acid rain is caused by
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$SO _2$ and $SO _3$
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$SO _2$ and CO
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$NH _3$ and CO
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$SO _2$ and $NH _3$
Acid rain is caused by the chemical reaction. Basically, rain that has unusually low pH is called acid rain. The most common chemicals that cause acid rain are sulphur oxides and nitric oxides. These substances rise high in the atmosphere where they react with water, oxygen and other chemicals to form more acidic pollutant. Sulphur dioxide on reaction with water and oxygen forms sulphur trioxide which is rapidly converted into sulphuric acid in presence of water.