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 zoology environmental pollution primary air pollutants air pollution - types and sources not for breathing not for drinking

Examples of secondary air pollutants is/are

  1. Smog

  2. PAN
  3. $O _3$

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

Secondary pollutant is an air pollutant that do not emit directly from the source but forms when primary pollutant reacts in the atmosphere. For example $O _3$ and PAM forms when hydrocarbon reacts with nitrogen oxides in the presence of sunlight, smog forms when industrial or vehicle fumes reacts with sunlight in atmosphere. Thus, the correct answer is 'All of the above'.

Multiple choice zoology environmental pollution primary air pollutants air pollution - types and sources not for breathing not for drinking

Given below are some differences between primary air pollutants and secondary air pollutants.


Which one of the following is an incorrect difference?

  1. (i) Primary air pollutants - These persist in the form in which they are added to the environment.

    (ii) Secondary air pollutants - these are formed by interaction among the primary pollutants.

  2. (i) Primary air pollutants - These are more toxic than the secondary pollutants.

    (ii) Secondary air pollutants - These are less toxic than the primary pollutants.
  3. (i) Primary air pollutants - Examples include DDT, $ { CO } _{ 2 } $

    (ii) Secondary air pollutants - Examples include Ozone, PAN

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Primary pollutants are emitted directly from sources, while secondary pollutants form through chemical reactions in the atmosphere. Option B is incorrect because primary pollutants are not inherently more toxic than secondary ones; for example, ozone (a secondary pollutant) is highly toxic.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Which of the following is a pollutant?

  1. Sooty particle

  2. Sulpur-dioxide

  3. Carbon-monoxide

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

Pollutant is a substance that pollutes something, especially water or the atmosphere.
Examples are particulate matter (Sooty particles that are most toxic when they are small),sulphur dioxide,carbon-monoxide etc.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Those gases or particles that are pumped into the air to make it unclean are called ______.

  1. primary air pollutant

  2. secondary air pollutant

  3. teritiary air pollutant

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

Primary pollutants are those gases or particles that are pumped into the air to make it unclean. They include carbon monoxide from automobile (cars) exhausts and sulphur dioxide from the combustion of coal.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

Acid rain is caused by _______.

  1. emission of gases from industries

  2. air pollutants

  3. both (A) and (B)

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

Chemical reactions involving air pollutants can create acidic compounds which can cause harm to vegetation and buildings. Sometimes, when an air pollutant, such as sulfuric acid combines with the water droplets that make up clouds, the water droplets become acidic, forming acid rain.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

When pollutants in the air mix up in a chemical reaction, they form an even more dangerous chemical.these pollutants are called ______.

  1. primary air pollutant

  2. secondary air pollutant

  3. tertiary air pollutant

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

Secondary pollutants: When pollutants in the air mix up in a chemical reaction, they form an even more dangerous chemical. Photochemical smog is an example of this, and is a secondary pollutant.

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

An effective air-pollution control equipment is an attachment that electrically attracts pollutant particles in hot, escaping gases. It is known as:

  1. an electric condenser

  2. a gas condenser

  3. an air purifier

  4. an electrostatic precipitator
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Electrostatic precipitator is a device that uses an electric charge to remove certain impurities such as solid particles liquid  from air and ether gases. It is particularly used to remove particles and power generating stations. 

Multiple choice economics environment pollution introduction to environmental pollution introduction to pollution environment and pollution

We need fresh air for breathing. Some sources that cause pollution of air are mentioned here. Can you pick the false one?

  1. Coal fires

  2. Heavy rain

  3. Volcanoes

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

Coal fires, volcanoes and forest fires causes air pollution due to release of many pollutants such as $CO _2$, whereas High-speed wind and dust storm cause pollution.

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Inorganic salts, mineral acids and metal compounds are:

  1. Inorganic pollutants

  2. Organic pollutants

  3. Air pollution

  4. All of them
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Inorganic salts, mineral acids, and metal compounds are chemical substances that do not contain carbon-hydrogen bonds, classifying them as inorganic pollutants when they contaminate the environment.

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Which one of the following is a  man-made source of air pollution?

  1. Volcanic-eruption

  2. Automobile-exhaust

  3. Both A and B

  4. None of these
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Anthropogenic or man-made source of pollution is automobile exhaust. When fuel burns various gases like carbon dioxide, oxides of nitrogen, sulfur dioxide, carbon monoxide are released into the air.