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

Acid rain pollutes:

  1. air

  2. water

  3. soil

  4. all of these
Reveal answer Fill a bubble to check yourself
B,C Correct answer
Explanation

Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions. Acid rain pollutes water and soil. It can have harmful effects on plants, aquatic animals and infrastructure.


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

The pollutants in the air are:              

  1. melting white marbles of Taj Mahal.

  2. discoloring white marbles of Taj Mahal.

  3. forming cracks in the marbles of Taj Mahal.

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

Since the area in which Taj Mahal is located is surrounded by many industries and factories, they emit a great amount of pollutants into the atmosphere, They even release toxic and acidic components in the near by water bodies. The pollutants in air are discoloring the white marbles of Taj Mahal due to acidic corrosion (caused by the oxides of non-metals like sulfur and nitrogen).

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

Acid rain can be prevented by:

  1. use of cleaner fuels

  2. attaching devices known as scrubbers in the chimneys

  3. both A and B

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

One of the most fundamental acid rain solutions is to utilize fuels that burn more cleanly or to burn coal more efficiently. This will greatly reduce the possibilities of acid rain developing in the atmosphere.

 As far as industrial power plants are concerned, the best solution is to attach devices known as scrubbers in the chimneys of these plants. These scrubbers reduce the amount of sulfur produced in the smoke by 90-95%.

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

Industries like Mathura Oil Refinery produce pollutants like:

  1. sulphur dioxide

  2. nitrogen dioxide

  3. both a and b

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

The industries located in and around Agra like rubber processing, automobile, chemicals and especially Mathura Oil Refinery have been responsible for producing pollutants like sulphur dioxide and nitrogen dioxide, which contaminate the environment by producing dissolved acids in the air.  

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

The major threat to Taj Mahal is:

  1. acid rain.

  2. hydrogen peroxide.

  3. Both a and b.

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

Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. 

Acid rain corrodes the marble (calcium carbonate) of Taj Mahal. It causes damage to this wonderful structure, causing yellowing of marble.

Multiple choice biology human influences on the environment human intervention in ecosystems humans in the environment involvement of humans in the conservation of environment

Metallic pollutants released by automobiles that use leaded fuel is

  1. Arsenic

  2. Cadmium

  3. Lead

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

Leaded fuel in the form of lead gasoline is banned recently due to its extremely harmful effects on health and pollution caused by it. Combustion of leaded petrol leads to release of lead in the environment causing dangerous effects on the health of all living organisms and environmental pollution. 

The main difference between leaded and unleaded petrol is the presence of an additive in leaded petrol called tetra ethyl lead.
So the correct option is C.

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Some organisms are sensitive to different levels of air pollution and are used as pollution-indicators. Suggest which among the following fits into the category

  1. Fungi

  2. Fresh water algae

  3. Bacteria

  4. Lichens
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Lichens are used as the indicators of air pollution. These structures grow on tree bark and rocks. Air pollutants which are in the gaseous forms get dissolved in the rainwater, especially SO$ _2$ (sulphur dioxide) can damage lichens, and check them from growing. In places where lichens are not growing, it indicates that the air is heavily polluted with sulphur dioxide and other pollutants. 

Thus, the correct answer is option D. 

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

Lichens indicate pollution by

  1. $O _3$
  2. $SO _2$
  3. $NO _2$

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

Lichens are the symbiotic association of the algae and fungi. These absorb their mineral nutrients from the atmosphere rather than the soil. So, the contamination of the atmospheric air will result in their death. Lichens show specific sensitivity to sulphur dioxide and vanish from the area wherever it is present. So, these are called the indicators of the sulphur dioxide pollution.

Hence, the correct answer is 'SO$ _{2}$'.

Multiple choice indicators of pollution biodiversity: conservation human influences on the environment option c: ecology and conservation biology

$SO _2$ pollution is indicated by

  1. <p><font color="#222222" face="arial, sans-serif">Deschampsia (grasses)</font>
    </p>

  2. <p><font color="#222222" face="arial, sans-serif">Sphagnum (mosses)</font>
    </p>

  3. <p><font color="#222222" face="arial, sans-serif">Usnea (lichens)</font>
    </p>

  4. <p><font color="#222222" face="arial, sans-serif">Cucurbita (climbers)</font>
    </p>
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Lichens represent the symbiotic association between the species of Algae and Fungi. These forms absorb much of their mineral nutrients from the air rather than the soil. So, any contamination would threaten their existence. If air is polluted with sulphur dioxide, then lichens will die in that particular environment. Since the era of industrialization, many species of lichens have gone extinct. Due to this property, lichens are considered to be the indicators of the air pollution. Hence, the correct answer is Usnea (Lichen)'

Multiple choice chemistry chemical reactions of organic compounds combustion and thermal cracking of hydrocarbons chemical properties of carbon compounds chemical properties of organic compounds

Which chemical substance is emitted in car exhaust and is a cause of acid rain?

  1. Nitrogen oxides

  2. Lead

  3. Carbon dioxide

  4. DDT

  5. Nitrates
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Nitrogen oxides is emitted in car exhaust and is a cause of acid rain.
Fuels such as coal for engine and petroleum for vehicle having little quantity of sulphur and nitrogen. On combustion, such fuels form oxides of sulphur and nitrogen which is environmental hazard.

Multiple choice chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

Exhaust motor vehicle is the main source of:

  1. manganese

  2. carbon monoxide

  3. sulfur dioxide

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

Exhaust gas or flue gas is emitted as a result of the combustion of fuels such as natural gas, gasoline, petrol, biodiesel blends, diesel fuels, fuel oils, or coal. The largest part of most combustion gas is nitrogen. water vapour (except with pure-carbon fuels), and carbon dioxide (except for fuels without carbon); these are not toxic or noxious. A relatively small part of combustion gas is undesirable noxious or toxic substances, such as carbon monoxide (CO) from incomplete combustion.

Multiple choice chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

In absorbtion method, the polluted air containing gaseous pollutants is passed through:

  1. porous material with very small holes

  2. flame combuster

  3. scrubber containing a suitable liquid absorbent

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

In absorption method,the polluted air containing gaseous pollutants is passed through a scrubber containing a suitable liquid absorbent. The liquid absorbs the harmful gaseous pollutants present in air.

Multiple choice chemistry air and water pollution ways to prevent air pollution ways to reduce air pollution reducing air pollution

Photochemical smog is related to pollution of:

  1. Soil

  2. Air

  3. Water

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

Photochemical smog is produced when pollutants from the combustion of fossil fuels react with sunlight. The energy in the sunlight converts the pollutants into other toxic chemicals. For photochemical smog to form, there must be other pollutants in the air, specifically nitrous oxides and other volatile organic compounds (VOCs).

Hence, the correct option is $A$