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 business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Pollution indicator plants

  1. Are resistant to pollution

  2. Can purify the atmosphere

  3. Are very sensitive to pollution

  4. Are very sensitive to pollutants
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The pollution indicators are the agents which determine the presence of the pollutant. There is a change in the structure of the pollution indicators when there is pollutant present in the environment. The indicators are sensitive to pollution. The plants which are used as the pollution indicators show bleaching, stunting or death due to the presence of the pollutant.

Thus, the correct answer is option C. 

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

A pollutant that cause irritation in eyes, nose and throat is

  1. CO
  2. $SO _2$

  3. CFC
  4. $CH _4$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sulphur dioxide form a a very harmful gas. It is also responsible for the formation of acid rain and a potent atmospheric pollutant. People with asthma and similar bronchial conditions are at a greater risk through sulphur dioxide poisoning. It is also linked with cardio vascular diseases.

So, option B is the correct answer.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Very fine organic or inorganic particles suspended in air is known as

  1. Particulate pollutant

  2. Gaseous pollutant

  3. Aerosol

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

Aerosols are minute organic or inorganic particles suspended in the atmosphere. These are the colloids of solid and liquids suspended in air. Their scattering of sunlight can reduce visibility.

So, the correct answer is option C.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Which of the following groups of plants can be used as indicators of S$O _2$ pollution of air?

  1. Epiphytic lichens

  2. Ferns

  3. Liver worts

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

Epiphytic lichens lack roots and absorb nutrients and water directly from the air, making them highly sensitive to air pollutants like SO2, which damages their chlorophyll.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Which of the following is a weightless pollutant?

  1. Sewage and exhaust emission
  2. $SO _2$ and $NO _2$

  3. Photochemical smog

  4. Heat, sound and radioactive wastes
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Heat in the form of thermal waste waters flowing out of electricity-generating units, e.g., thermal power plants, constitute important category of pollutants. Thermal waste water eliminates or reduces the number of organisms sensitive to high temperature, and may damage the indigenous flora and fauna. Noise is an unwanted sound, or sound which produces unpleasant effects and discomfort on the ears and reduces the quality of life. Radiation, that is given off by nuclear waste is extremely damaging to organisms, because it causes mutations at a very high rate. At high doses, nuclear radiation is lethal but at lower doses, it creates various disorders, the most frequent of all being cancer. All the three are pollutants but does not have any physical weight.  

So, the correct answer is option D.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Which of the following is a secondary air pollutant?

  1. Ozone

  2. Carbon dioxide

  3. Carbon monoxide

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

Primary pollutants are emitted directly from sources, while secondary pollutants like ozone are formed in the atmosphere through chemical reactions between primary pollutants (like NOx and VOCs) and sunlight.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Which of the following is not a pollutant?

  1. ${ SO } _{ 2 }$
  2. ${ CO } _{ 2 }$

  3. CO
  4. ${ NO } _{ 2 }$
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Carbon dioxide is described as pollutant or not a pollutant depending on the source of emission. The carbon dioxide which is released from the plants and animals as the end product of the respiration is not considered as a pollutant. The carbon dioxide gas which is released as the exhausts and emissions from the industries causes pollution and are referred as a pollutant. The main role of the gas is in increasing the temperature of Earth and so these are not pollutants

So, the correct answer is '${ CO } _{ 2 }$'

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

All are particulate pollutants except

  1. Dust

  2. Ozone

  3. Soot

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

Ozone is formed through reactions between the primary nitrogen oxides and hydrocarbons in the presence of sunlight. It is a gaseous pollutant. Particulate matter consists of soot, flash, dust of various types, fur, hair, spores etc. They are classified into settleable and suspended particulate matter. Thus, the correct answer is option B.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Air pollution can be

  1. Gaseous

  2. Particulate type

  3. Both A and B

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

The air pollution is basically of two types:
1) Gaseous pollution: harmful gases given out from a variety of sources.
2) Particulate pollution: particles such as those of dust, smoke, mining, stone drilling, wearing of rubber types of motor vehicles.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Carbon mono oxide is a pollutant because

  1. it reacts with $O _{2}$

  2. it inhibits glycolysis

  3. makes nervous system inactive

  4. reacts with haemoglobin
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Carbon monoxide binds to hemoglobin with a much higher affinity than oxygen, forming carboxyhemoglobin, which prevents the blood from transporting oxygen to tissues.

Multiple choice business organisation and correspondence industrial pollution and degradation of environment sources of pollution environmental conservation environment and conservation

Which of the following statements are correct ?


(I) Benzene hexachloride (BHC) is a non-biodegradable pollutant.
(ii) Anthropogenic air pollutants are natural in origin.
(iii) Carbon monoxide is a primary air pollutant.
(iv) Sulphur dioxide causes brown air effect during traffic congestion in cities.

  1. (i) and (iii)

  2. (i) and (ii)

  3. (ii) and (iii)`

  4. (ii) and (iv)
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Anthropogenic air pollutants are man-made pollutants like emissions, burning of fossil fuels, mining, etc. Sulpur dioxide is produced in large quantities during the smelting of metallic ores and the burning of petroleum and coal in industries and by motor vehicles. It is cause of acid rain

Multiple choice our life and environment geography

The cement factories emit dust and smoke which contains carbon, metals and other solid materials that pollute the _______.

  1. Water

  2. Land

  3. Air

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

Factories are a major cause of air pollution an need to be checked regularly so that they follow environmental regulation policies. 

Multiple choice our life and environment geography

What gets released in the air due to the activities like drilling, blasting, road haulage, crushing and screening?

  1. Smoke and dust

  2. Fumes

  3. Particulate matter

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

Mining and quarrying activities like drilling, blasting, and crushing generate significant amounts of dust, smoke, and particulate matter.

Multiple choice separation of components of mixtures methods of separation elements, compounds and mixtures chemistry

______for the removal of VOCs from air, in recent times have become important due to environmental and economic driving forces.

  1. Liqueafaction

  2. Condensation based gas separations

  3. Solubility-based gas separations

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

Solubility-based gas separations for applications such as the removal of VOCs from air, in recent times have become important due to environmental and economic driving forces.The main objective is to obtain membranes that exhibit high permeability and high selectivity for the heavier species over the light gases.

Multiple choice botany adaptation plant adaptation adaptation in plants plant habitat importance and classification of angiosperms aquatic plant adaptations pollination through water life in water

What reduces amount of light reaching leaf?

  1. Sulfur oxide emission

  2. Carbon dioxide

  3. Dust and Smog

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

Dust and smog particles suspended in the air scatter and absorb sunlight, thereby reducing the intensity and quality of light that reaches the leaf surface for photosynthesis.