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 business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

The presence of solid, liquid or gaseous compounds, which may not be normally present, or in excess concentration in the atmosphere is called

  1. air pollution

  2. water pollution

  3. soil pollution

  4. radioactive pollution
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Air pollution is defined as the presence of substances in the atmosphere at concentrations high enough to interfere with human health, safety, or welfare, or to produce other harmful environmental effects.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Assertion :Suspended particulate matter (SPM) is an important pollutant released by diesel vehicles. 

Reason :Catalytic converters greatly reduce pollution caused by automobiles.

  1. If both the assertion and the reason are true and the reason is a correct explanation of the assertion

  2. If both the assertion and reason are true but the reason is not a correct explanation of the assertion

  3. If the assertion is true but the reason is false

  4. If both the assertion and reason are false

  5. If the assertion is false but reason is true
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

SPM (Suspended Particulate Matter) is defined as particles floating in the air with a diameter below 10um. Studies have shown that high SPM concentrations in the air can have a detrimental impact on respiratory organs. SPM is generated both from natural sources (e.g.,volcanoes or dust storms) and human activities (vehicles, incinerators and industrial plants)

Catalytic converter is a device designed to reduce the amount of emissions from automobiles.The current (so - called three - way) systems use a heated metal catalyst to reduce the emissions of carbon monoxide CO),hydrocarbons and nitric oxide (NO), all of which contribute to the formation of photochemical smog. In an automobile's exhaust system, a catalytic converter provides an environment for a chemical reaction where unburned hydrocarbons undergoes complete combustion. Hence the combustion process continues but outside the engine combustion chamber where no useful energy is extracted.Toxic car gases such as unburned hydrocarbon (UHC) and carbon monoxide(CO) would not exist if the fuel to energy conversion in the engine were perfect.

So, the correct answer is 'If both the assertion and reason are true but the reason is not a correct explanation of the assertion'

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Air pollution is severe in

  1. Cities

  2. Industrialised areas

  3. Densely populated areas

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

Air pollution is typically more severe in areas with high human activity, such as cities, industrial zones, and densely populated regions, due to increased emissions from transport and industry.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

What does plants sensitivity in air pollution depends on?

  1. Fertility

  2. Light

  3. Planted seeds

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

Plant sensitivity to air pollution is primarily influenced by the plant's physiological state and environmental factors, but among the choices, fertility is a key factor affecting growth and stress response. The other options are either unrelated or secondary to the fundamental biological sensitivity.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

What is dispersed solid or liquid particles of microscopic size in gaseous media?

  1. Aerosols

  2. PAN

  3. Smog

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

Aerosols are defined as a suspension of fine solid particles or liquid droplets in a gas. This is a standard scientific definition used in atmospheric science.

Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which among the following are found to be one of the pollutants of air pollution?

  1. Chloroflorocarbon

  2. Nitrogen

  3. Carbon dioxide

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

CFC is found to destruct the ozone layer. It is found to be contaminating air. Cooling electronic gadgets are the major source of CFC.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following problems is associated with the burning of coal?

  1. Acid rain

  2. Carbon dioxide emissions

  3. Ash with toxic metal impurities

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

Coal plants are the nation’s top source of carbon dioxide emissions, the primary cause of global warming. Burning coal is also a leading cause of smog, ash, acid rain, and toxic air pollution.

Multiple choice biology air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

The release of carbon dioxide into the air causes:

  1. acid rain

  2. eutrophication

  3. global warming

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

The trapping of infrared radiations from the atmosphere and not reflecting it back due to higher levels of Carbon dioxide as a major pollutant which traps radiations. This effect causes the rise in the global temperature resulting in melting of polar ice caps and rises in the sea level.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Black carbon, a potential global warming gas causes__________.

  1. human morbidity

  2. premature mortality

  3. both a and b

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

Black carbon consists of pure carbon in several linked forms. It is formed through the incomplete combustion of fossil fuels, biofuel, and biomass, and is emitted in both anthropogenic and naturally occurring soot. Black carbon causes human morbidity and premature mortality.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following is not the source of hydrocarbon as a pollutant?

  1. Man-made sources

  2. Sources of methane

  3. Fly ash

  4. Oxide of sulphur
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Oxides of sulphur do not combine with any other molecule to give hydrocarbon, while manmade sources like industries, vehicles release hydrocarbon into the atmosphere.

Multiple choice chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Example of primary pollutant:

  1. $SO _2$
  2. $CO _2$

  3. Hydrocarbon
  4. $CO$
Reveal answer Fill a bubble to check yourself
A,C,D 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 chemistry air and water pollution control environmental impact: global warming green house effect geobiochemical cycle

Which of the following are the source for hydrocarbons as pollutants?

  1. Anaerobic bacterial decomposition of organic matter

  2. Forest fires and trees

  3. Combustion of Fuels

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

The following are the source for hydrocarbons as pollutants:
Anaerobic bacterial decomposition of organic matter, forest fires and trees and combustion of fuels. Solvents in industrial operation.
Hence option D is correct.