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 environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Major causes of air pollution are:

  1. Combustion of natural gas, coal, petroleum

  2. Welding, stone crushing, agriculture burning

  3. Both A and B

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

Major causes of air pollution are combustion of natural gas, coal, petroleum, automobiles, aircraft, railways, thermal plants, welding, stone crushing and agriculture burning

So, the correct answer is 'Both A and B'

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

Fine organic or inorganic particles suspended in air is called as

  1. Particulate pollutant

  2. Gaseous pollutant

  3. Aerosol

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

Fine organic or inorganic particles suspended in air is called as aerosol particulate matter. It consists of soot, flash, and dust of various types, fur, hair, spores etc. It is classified into settleable and suspended particulate matter.

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

Carbon monooxide 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

CO reacts with haemoglobin much faster than oxygen. It can be fatal to life. If the amount of CO is high, it forms carboxy haemoglobin on combination with haemoglobin which causes suffocation even leads to death in fetal condition. Thus, the correct answer is option D.

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

Particulate pollutants are

  1. Small solid particles and liquid droplets

  2. Liquid droplets in atmosphere

  3. Small solid particles released into the atmosphere

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

Particulate pollutants are the mixture of small solid particles and liquid droplets. It consists solid particles like soot, flash, dust of various types, fir, hair, spore etc. It is classified as the suspended particulate matter which is the source of pollution and may adversely affect the environment. It can cause harmful effects on health on inhaling it.

So, the correct answer is option A.

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

Which of the major sources of air pollution contributes pollutants like chlorofluorohydrocarbons?

  1. Industrial effluents

  2. Aerosols

  3. Sewage pollutants

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

The presence of CFCs in the atmosphere results in the depletion of the ozone layer. They are used as coolants in refrigerators, aerosol sprays, coolers, etc. The increase in the concentration of the chloro- fluoro-hydrocarbon molecules in the atmosphere results in air pollution. 

Thus, the correct answer is option B. 

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

Classical smog is

  1. Dark brown smog

  2. Yellow brown smog

  3. Los Angeles smog

  4. Smog with secondary pollutants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation
Smog is the fog containing smoke. Smog is of two types depending upon the type of pollutants; classical smog and photochemical smog.
  • Classical smog is formed when there is high concentration of sulphur dioxide and particulate matter produced due to combustion of fuels. It occurs in cold and humid climate. It is also known as London smog or Sulphurous smog and causes dark brownish colour of atmosphere.
  • Photochemical smog is formed when sunlight acts on the oxides of nitrogen and hydrocarbons produced from factories or by automobiles. It occurs in warm and dry climate. It is also known as Los Angeles smog and causes light brownish colouration of atmosphere.
So, the correct answer is 'Dark brown smog'.
Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which of the following is NOT caused by Hydrogen sulfide pollution in the air?

  1. Mottled chlorosis

  2. Defoliation in plants

  3. Decolouration of paints

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

In human, effect of Hydrogen sulfide due to air pollution is not seen but in plant it greatly effect like chlorosis ( yellowish color of plant leaves). Falling of leaves is also a major problem (defoliation). Hydrogen sulfide also damage building, bridge paints (discoloration).

So correct option is 'cardiovascular malfunction'.

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 likely to be most severe

  1. in the interior of continents

  2. near the center of an anticyclone

  3. in the summer

  4. when the atmosphere is turbulent
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Anticyclones are high-pressure systems characterized by sinking air and stable atmospheric conditions. This stability traps pollutants near the ground, leading to severe air pollution.

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

Which of the following pollutants is not present in the vehicular exhaust emissions?

  1. Lead

  2. Ammonia

  3. Carbon monoxide

  4. Partculate matter
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation
Vehicular emissions are contributing to air quality problems, smog etc. emissions of many air pollutants have shown variety of negative effect on public health. Emission of principle pollutants like hydrocarbon, CO. $NO _x$, $SO _x$, particulate matter and volatile organic compounds are affecting natural environment and contributing to asthma, bronchitis and various diseases etc. Ammonia is not present in vehicular exhaust emissions.
So, the correct answer is 'Ammonia'.
Multiple choice business organisation and correspondence environmental pollution and industries air pollution and its effects the environment and us environment and conservation

Which particle ranges from 1 to 1000 um in diameter?

  1. Smoke

  2. Dust

  3. Fumes

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

Dust particles are solid particles suspended in the air, typically ranging from 1 to 1000 micrometers in diameter, generated by mechanical processes like grinding or crushing.

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

It is said that the Taj Mahal may be destroyed due to

  1. Flood in Yamuna river

  2. Decomposition of marble as a result of high temperature

  3. Air pollutants released from oil refinery of Mathura

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

A major threat to Taj Mahal is from Mathura oil refinery due to polluting gases like sulphur dioxide, hydrogen sulphide and nitrogen oxides.  When moisture gets accumulated in polluted environment, the oxides of sulfur, carbon and nitrogen from weak sulfuric, carbonic and nitric acids which are corrosive of stone, metals, paints and textiles.  Many priceless works of art have suffered more damage in the last 20 years due to increased sulfur-dioxide in the atmosphere.

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

Air pollution effects are usually found on

  1. Leaves

  2. Flowers

  3. Stems

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

Leaves are directly exposed to air pollutants and effects of air pollution are first seen on leaves. Deposition of particulate matter hampers gaseous exchange and deposition of soot interfere with the capture of sunlight. Sulphur dioxide causes the destruction of chlorophyll and necrosis. Nitrogen oxides cause defoliation, necrosis, dieback and death of plants. Other than this, acid rain damages plant by a direct effect on foliage and growing points by chlorosis, necrosis, defoliation and dieback.

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

Beauty of Taj may be destroyed by

  1. Flood in Yamuna

  2. Temperature mediated spoilage of marble

  3. Air pollutants from Mathura refinery

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

The Mathura Refinery situated close to the Taj Mahal is a threat to the marble of the Taj Mahal because the Refinery releases the air pollutants in the form of oxides of sulphur, oxides of nitrogen and oxides of carbon. These oxides then react with water and precipiate in the form of nitric acid and sulphuric acid called acid rains. Acid rains have resulted in the corrosion of the marble, making it to appear yellow. Hence, the correct answer is 'Air Pollutants from Mathura Refinery'.

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

Sulphurous smog is

  1. Photochemical smog

  2. Oxidising smog

  3. Classical smog

  4. Los Angeles smog
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
Smog is the fog containing smoke. Smog is of two types depending upon the type of pollutants; classical smog and photochemical smog.
  • Classical smog, also known as London smog or Sulphurous smog, is formed when there is high concentration of sulphur dioxide and particulate matter produced due to combustion of fuels. It occurs in cold and humid climate and has reducing nature.
  • Photochemical smog, also known as Los Angeles smog, is formed when sunlight acts on the oxides of nitrogen and hydrocarbons produced from factories or by automobiles. It occurs in warm and dry climate and has oxidising nature.
So, the correct answer is 'Classical smog'.