Environmental Studies

Air Pollution

2,340 Questions

Air pollution questions address the sources of emissions, indoor air quality, and the formation of photochemical smog. You will explore the impact of particulate matter, acid rain, and urban pollutants. This is a highly relevant subject for environmental studies and general awareness tests.

Photochemical smogParticulate matter emissionsAcid rain causesIndoor air pollutionAmmonia emissions

Air Pollution Questions

Multiple choice chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

Which statement describes a disadvantage of sulfur dioxide?

  1. It can be used as a bleach in making wood pulp

  2. It can be used to kill bacteria in food

  3. It can be used to manufacture sulfuric acid

  4. It can dissolve the limestone in statues
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

$\text{sulphur dioxide can dissolve the limestone.}$


$CaCO _3+H _2O \rightarrow Ca(OH) _2+CO _2$
$Ca(OH) _2+SO _2 \rightarrow CaSO _3+H _2O$

Multiple choice chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

Which of the following is the most important man-made source of sulfur dioxide?

  1. Fossil fuel combustion

  2. Conversion of wood pulp to paper

  3. Both a and b

  4. Decaying of plant matter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The most important man-made sources of sulfur dioxide are fossil fuel combustion, smelting, manufacture of sulfuric acid, conversion of wood pulp to paper, incineration of refuse and production of elemental sulfur.

Multiple choice chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

Sulphur dioxide causes ______ in trees.               

  1. Emphysema

  2. Chlorosis

  3. Bronchitis

  4. All of above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Oxides of sulphur are produced when sulphur containing fossil fuels are burnt. Sulphur dioxide is a poisonous gas harmful to both animals and plants. It is poisonous to trees, causing dwarfing and Chlorosis.

Multiple choice chemistry natural resources- air, water and land sulfur and its oxides acid deposition nitrogen and sulfur

In cities like Bombay and Calcultta, the major air pollutants is/are:

  1. ozone

  2. carbon monoxide and oxides of sulphur

  3. hydrocarbons and not air

  4. algal spores and marsh gas
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Causes of air pollution in big cities are -
1. Burning of fossil fuels: Sulfur dioxide emitted from the combustion of fossil fuels like coal, petroleum and other factory combustibles is one the major cause of air pollution. carbon monoxide caused by improper or incomplete combustion and generally emitted from vehicles is another major pollutant along with nitrogen oxides, that is produced from both natural and man made processes.
2. Exhaust from factories and industries: Manufacturing industries release large amount of carbon monoxide, hydrocarbons, organic compounds, and chemicals into the air thereby depleting the quality of air. Manufacturing industries can be found at every corner of the earth and there is no area that has not been affected by it.

Multiple choice chemistry nitrogen and sulfur sulfur and its oxides acid deposition natural resources- air, water and land

$1000L$ of air at STP was dissolved in water and required $2.5\times { 10 }^{ -5 }$ moles of $KMn{ O } _{ 4 }$ for complete reaction of ${SO} _{2}$ at pollutants. Thus, ${SO} _{2}$ content in air is :

  1. $1.4ppm$
  2. $14ppm$
  3. $2.8ppm$
  4. $6.25ppm$
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Reaction: 5SO2 + 2MnO4- + 2H2O -> 5SO4(2-) + 2Mn(2+) + 4H+. 2 moles of MnO4- react with 5 moles of SO2. 2.5*10^-5 moles of KMnO4 react with (5/2)*2.5*10^-5 = 6.25*10^-5 moles of SO2. Volume of air = 1000 L. Moles of SO2 per L = 6.25*10^-8. At STP, 1 mole = 22.4 L. Concentration in ppm = (Volume SO2 / Volume air) * 10^6 = (6.25*10^-5 * 22.4 / 1000) * 10^6 = 1.4 ppm.

Multiple choice

The primary cause of acid rain is:

  1. The burning of fossil fuels

  2. The eruption of volcanoes

  3. The decomposition of organic matter

  4. The release of methane from wetlands

  5. The use of fertilizers in agriculture
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The burning of fossil fuels, such as coal and oil, releases sulfur dioxide and nitrogen oxides into the atmosphere, which react with water vapor to form sulfuric acid and nitric acid, leading to acid rain.

Multiple choice

Which of the following is NOT a primary pollutant emitted from vehicles?

  1. Carbon monoxide

  2. Nitrogen dioxide

  3. Ozone

  4. Particulate matter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ozone is a secondary pollutant formed by the reaction of sunlight with nitrogen oxides and volatile organic compounds (VOCs) in the atmosphere.

Multiple choice

Which air pollutant is primarily responsible for acid rain?

  1. Sulfur dioxide

  2. Nitrogen dioxide

  3. Carbon monoxide

  4. Particulate matter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sulfur dioxide is released into the atmosphere from the burning of fossil fuels, such as coal and oil, and is a major contributor to acid rain.

Multiple choice

Which air pollutant is primarily responsible for the formation of smog?

  1. Carbon monoxide

  2. Nitrogen dioxide

  3. Ozone

  4. Particulate matter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ozone is a major component of smog and is formed by the reaction of sunlight with nitrogen oxides and volatile organic compounds (VOCs) in the atmosphere.

Multiple choice

Which air pollutant is primarily responsible for the formation of acid rain?

  1. Sulfur dioxide

  2. Nitrogen dioxide

  3. Carbon monoxide

  4. Particulate matter
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sulfur dioxide is released into the atmosphere from the burning of fossil fuels, such as coal and oil, and is a major contributor to acid rain.

Multiple choice

Which of the following is NOT a primary pollutant emitted from industrial activities?

  1. Sulfur dioxide

  2. Nitrogen dioxide

  3. Ozone

  4. Particulate matter
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ozone is a secondary pollutant formed by the reaction of sunlight with nitrogen oxides and volatile organic compounds (VOCs) in the atmosphere.