Environmental Studies

Air Pollution

2,298 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 economics environment pollution environment and pollution for a pollution free nature natural resources- air, water and land

Which of the following is not primary pollutant?

  1. $SO _2$
  2. $H _2S$
  3. $CO$
  4. $SO _3$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary Pollutants are the ones which are injected into the atmosphere directly.  Examples include:

  1. Carbon monoxide (CO)
  2. Oxides of nitrogen ($N{ O } _{ x },NO$ )
  3. Sulfur oxides ($S{ O } _{ x }$)
  4. Volatile organic compounds (VOCs)
  5. Particulate matter (dust, ash, salt particles)
Multiple choice economics environment pollution environment and pollution for a pollution free nature natural resources- air, water and land

Which of these are particulates?

  1. Dust and fumes

  2. Fly ash and smoke

  3. Mist and fumes

  4. All of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PM stands for particulate matter (also called particle pollution) the term for a mixture of solid particles and liquid droplets found in the air. Some particles, such as dust, dirt, fumes, soot, smoke, mist or fly ash are large or dark enough to be seen with the naked eye.

Multiple choice chemistry natural resources- air, water and land environment and pollution environment pollution for a pollution free nature

Which will not cause any atmospheric pollution?

  1. Hydrogen

  2. Sulphur dioxide

  3. Carbon dioxide

  4. Carbon monoxide
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Causes of Air pollution:
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 Monooxide 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. Agricultural activities: Ammonia is a very common by product from agriculture related activities and is one of the most hazardous gases in the atmosphere. Use of insecticides, pesticides and fertilizers in agricultural activities has grown quite a lot. They emit harmful chemicals into the air and can also cause water pollution.
3. 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. Petroleum refineries also release hydrocarbons and various other chemicals that pollute the air and also cause land pollution.
4. Mining operations: Mining is a process wherein minerals below the earth are extracted using large equipments. During the process dust and chemicals are released in the air causing massive air pollution.
5. Indoor air pollution: Household cleaning products, painting supplies emit toxic chemicals in the air and cause air pollution.

Multiple choice chemistry air environment and pollution environment pollution for a pollution free nature

Which of the following is not regarded as a pollutant?

  1. $NO _{2}$
  2. $CO _{2}$
  3. $SO _{2}$

  4. CO
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Pollutants can be classified as solid, gaseous or liquid pollutants. Also, it can be classified as physical, chemical and biological. They can be further classified as degradable and non-degradable. $NO _2$, $SO _2$  and CO are gases which if present in great quantity in the atmosphere can cause pollution.

Multiple choice chemistry air environment and pollution environment pollution for a pollution free nature

The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants. Which of the following belongs to secondary air pollutants? 

  1. $CO$
  2. $Hydrocarbon$
  3. $Peroxyacetyle\ nitrate\ (PAN)$
  4. $NO$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation
The correct answer is NO (nitrogen oxide) which reacts with oxygen to form nitrogen dioxide, participate in a complex of ultraviolet-driven photochemical reactions. and it also forms acid rain when it reacts with water.
Multiple choice evs nutrition and its deficiency nutrients and foodstuffs introduction to nutrients nutrition and its need simple test for nutrients test for nutrients

Biological particles survive in atmosphere for short period of time due to lack of ______________.

  1. Dust particles

  2. Moisture

  3. Nutrients

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

Biological particles in the atmosphere often lack the necessary nutrients required to sustain metabolic activity or reproduction, limiting their survival time.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

Which of the following would be a natural pollution?

  1. Occurence of $NO _2$ in atmosphere

  2. Forest fires

  3. Eutrophication

  4. Occurence of smog
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Due to the increase in the temperature, there can be incidental forests fires. The fires result in the burning of the vegetation and animals. This results in the formation of ash which contains the carbon particles. The fumes of the fire are released in the atmosphere causing air pollution. This is the natural source of air pollution.

Thus, the correct answer is option B. 

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

Pollutant gases have an adverse effect on the environment and on our health. The amount of these gases has been steadily increasing over the years. The table given below shows the source and the amount of some pollutant gases produced by human activities.

Pollutant Gas Source Amount Produced per Year(Millions of Tonnes)
$CO _2$ Vehicle exhaust furnaces, burning coal 350
$SO _2$ Oil industries 200
$NO _2$ Vehicles exhaust furnaces 55
Hydrocarbons Vehicle exhaust furnaces, industries 90

Which one of the following statement(s) is correct ?

  1. The total sulphur dioxide and nitrogen dioxide produced per year is 145 million tonnes.
  2. $CO _2$ is produced by industries.
  3. The combined total pollutant gases produced by $NO _2$ and hydrocarbons is less than the total pollutant gases produced by $SO _2$

  4. Hydrocarbons are produced by vehicle exhaust gases and industries.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

NO2 (55) + Hydrocarbons (90) = 145. SO2 = 200. Since 145 < 200, statement C is correct. Statement A is incorrect because 200 + 55 = 255, not 145.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

A man made source of air pollution is

  1. Burning of fossil fuels

  2. Dust storm

  3. Pollen grains

  4. Forest fire
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Burning of fossil fuels is a man-made source of air pollution. The various fossil fuels like coal, natural gas, fuel oil are burned by humans for obtaining heat which is used in the generation of electric power. This leads to increase in the concentration of gas emissions like carbon dioxide and sulphur dioxide which enters the atmosphere and leads to air pollution. The increase in the concentration of carbon dioxide causes global warming and sulphur dioxide leads to breathing problem and the major cause of acid rain.

Thus, the correct answer is option 'Burning of fossil fuels'.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

Atmospheric pollutants formed by human activities constitute of the total of

  1. $95\%$
  2. $75\%$
  3. $25\%$
  4. $0.05\%$
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Water pollution and land contamination, it's the quantity (or concentration) of a chemical in the air that makes the difference between "harmless" and "pollution." Carbon dioxide (CO2), is present in the air around you at a typical concentration of less than 0.05 per cent and breathing it in usually does no harm (you breathe it out all day long); but air with an extremely high concentration of carbon dioxide is toxic and could kill you in a matter of minutes. Since Earth's atmosphere is very turbulent many of us live in windy countries air pollution will often disperse relatively quickly.

So the correct answer is '0.05%'.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

Smoke or dust dispersed in air is called

  1. Fog

  2. Smog

  3. Haze

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

Haze refers to the accumulation of smoke, dust, particulate matter and other dry particulates in the atmosphere. The formation of haze reduced visibility and it generally occurs in an area which is farther from the source of smoke and dust. 

A. Fog is the condensation of water droplets and mixed dust particles near the earth's surface, forming the ground clouds. This generally occurs in low atmospheric temperature.
B. Smog occurs when the smoke and dust particles condense around the water and their cumulative condensation.
C. Haze is the dispersal or smoke or dust in the air.
D. Mist is the dispersion of the water droplets in the air. It can be caused by the haze.
Hence, the correct answer is 'Haze'.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment pollution and industrial pollution pollution and its type pollutions

What of the following statements is correct?

  1. Benzene hexachloride is non-biodegradable pollutant.

  2. Anthropogenic air pollutants are natural in origin.

  3. Carbon monoxide is a primary air pollutant.
  4. SO$ _2$ causes brown air effect during traffic congestion in cities.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Anthropogenic air pollutants are the pollutants caused or influenced by humans. Anthropogenic air pollutant (carbon dioxide) is that portion of carbon dioxide in the atmosphere that is produced directly by human activities, such as burning fossil fuels, rather than by such processes as respiration and decay.
So, the correct answer is 'Option B-Anthropogenic air pollutants are natural in origin'.
Multiple choice chemistry water too little to waste effects and conservation of water pollution water pollution, its effects and cures for a pollution free nature

Rain that has been made acidic by certain pollutants in the air due to industries is called _______ 

  1. Smog

  2. Acid rain

  3. Hazardous rain

  4. none of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Acid rain is the rainfall made so acidic by atmospheric pollution that it causes environmental harm, chiefly to forests and lakes. The main cause is the industrial burning of coal and other fossil fuels, the waste gases from which contain sulphur and nitrogen oxides which combine with atmospheric water to form acids.

Multiple choice history a road to history taj mahal: a case study air and water pollution control air and water pollution

Monuments of marble can be destroyed by:

  1. sulphur dioxide pollution

  2. carbon monoxide pollution

  3. pesticide pollution

  4. dust particles
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Sulphur dioxide fumes mix with air moisture and come down as acid rain in the form of sulphuric acid. This acid rain can damage the marble tombs which is calcium carbonate and its reaction with acid rain forms calcium sulfate which gives a yellowish color of acid to the marble. This gradually destroys the marble structure over a period of time.
$CaCO _3 + H _2SO _4 \rightarrow CaSO _4 + H _2O + SO _2\uparrow$