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Acid Rain

Acid rain occ...

Question

Acid rain occurs when sulfur dioxide and nitrogen oxides combine with water vapors in the atmosphere and fall as rain. Which of the following is not caused by acid rain?

A

Decreased quality of air

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B

Reduced growth of forests

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C

Reduced pH of water bodies

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D

Destruction of marble buildings

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Solution

The correct option is A Decreased quality of air
Acid rain does not pollute air rather acid rain is caused due to the air pollution. The air pollutants consisting $S O_{2}$ and $N O_{x}$ , they combine with the water vapour.

$S O_{2} + O_{2} + H_{2} O ⟶ H_{2} S O_{4}$

$N O + H_{2} O ⟶ H N O_{2}$

$N O_{2} + H_{2} O ⟶ H N O_{3}$

Due to the formation of these acids, the rain is acidic.

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Similar questions

Acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. These substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants.

Q. The oxides of nitrogen and sulfur, when mixed with water in the air, are the chief components of acid rain.

Q. Read the passage and answer the following questions:
Acid rain is formed after the burning of fossil fuels releases compounds containing nitrogen and sulfur into the atmosphere. Sunlight and rain bring about chemical reactions that convert these compounds into nitric acid and sulfur dioxide, which combine with water droplets to form acid rain. Acid rain typically has a pH of approximately 5.5. "The higher acidity of soil and water affects many living organisms adversely. As the pH of lake water falls, fish become ill and die. Table 1 shows the effects of pH on the size of adult fish.

pH of lake	Average length of fish (cm)	Average mass of fish (g)
7.5	30 cm	454 g
7.0	28 cm	450 g
6.5	29 cm	453 g
6.0	25 cm	401 g
5.5	20 cm	288 g
5.0	17 cm	127 g
4.5	All fish died	All fish died

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.
Fungi are classified as

Oxides of nitrogen and sulphur cause ______ rain when reacted with water vapour present in atmosphere.

Q. Assertion (A): The oxides of nitrogen and sulphur combine with rainwater and come down as acid rain.
Reason (R): Acid rains cause depletion of ozone layer.

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