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 human influences on the environment acid rain air pollution - effects and control air pollution and its effects

All are physical pollutants except

  1. heat

  2. sound

  3. radiations

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

Physical pollutants include heat, sound, and radiation. Soot is a particulate matter, which is classified as a chemical or physical particulate pollutant, but in many contexts, it is distinguished from pure physical energy pollutants.

Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

A chemical substance which is not a pollutant but becomes a pollutant on reaction with other substance is called ___________.

  1. primary environmental pollutant

  2. secondary environmental pollutant

  3. tertiary environmental pollutant

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

Introduction of substances that are harmful to the environment is called environmental pollution and the substance is called pollutant. A chemical substance which is not a pollutant but becomes a pollutant on reaction with other substance is called secondary pollutant. Example, secondary pollutant include ozone, which is formed when hydrocarbons (HC) and nitrogen oxides (NOx) combine in the presence of sunlight, acid rain, which is formed when sulphur dioxide or nitrogen oxides react with water etc.

Multiple choice economics sustainable development with equity liberalisation objectives of economic planning in india need for sustainable development introduction to social movements and its types social movements

Example/s of the secondary environmental pollutant is _________.

  1. Smog

  2. Ozone

  3. PAN

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

Introduction of substances that are harmful to the environment is called environmental pollution and the substance is called pollutant. A chemical substance which is not a pollutant but becomes a pollutant on reaction with other substance is called secondary pollutant All the given options are examples of secondary pollutants which include Smog, Ozone, Peroxyacetyl nitrate (PAN).

Multiple choice zoology global environmental change causes of greenhouse effect global warming adaptation in animals

The release of $CO _2$ into air can cause:

  1. Global warming

  2. Eutrophication

  3. Acid rain

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

Global warming occurs when carbon dioxide and other air pollutants called the greenhouse gases collect in the atmosphere and absorb sunlight and solar radiation that have bounced off the earth’s surface.

Hence, the correct answer is 'Global warming'.

Multiple choice physics heat and energy causes of greenhouse effect global warming adaptation in animals

Which of the following air pollutants is mainly responsible for increasing green house effect and global warming?

  1. Carbon monoxide

  2. Nitrogen dioxide

  3. Carbon dioxide

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

Global warming is caused primarily due to emission of carbon dioxide. Other pollutants contributing to global warming includes methane, nitrous oxide and CFCs.

Multiple choice chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

Pure biodiesel does not emit what pollutant?

  1. Carbon Monoxide

  2. Sulfur Dioxides

  3. Particulate matter

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

Typically, emissions of nitrogen oxides are either slightly reduced or slightly increased depending on the duty cycle of the engine and testing methods used. Increases in NOx can be effectively eliminated with the use of normal mechanical remediation techniques (e.g. catalysts or timing changes). Research also documents the fact that the ozone forming potential of the hydrocarbon emissions of pure biodiesel is nearly 50% less than that of petroleum fuel. Pure biodiesel does not contain sulphur and therefore reduces sulphur dioxide exhaust from diesel engines to virtually zero.

Multiple choice evs - i the environment and us damaging the forests deforestation and afforestation protecting our environment pollution of soil degradation of land

............ is a man-made source of air pollution.

  1. Desert

  2. Farming

  3. Dust storms

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

Farming is considered as the major source of air pollution due to man. This is the man-made source of air pollution which allows the particles to enter the atmosphere. The movement of tractors will cause the soil particles to rise up in the air. The particles from the fertilizers and pesticides spray enter the atmosphere. Also during harvesting and husking, the small particles in the form of pollens and husks can result in air pollution. 

Thus, the correct answer is option B. 

Multiple choice commercial applications bioenergy biofuels making biofuels technological and industrial development

Which of the following is the way to control vehicular air-pollution in Indian cities ?

  1. Use of CNG as fuel

  2. Use of unleaded petrol in the vehicles

  3. Use of catalytic converter in the vehicles

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

  1.  CNG produces 45% fewer hydrocarbons than gasoline.
  2. Unleaded petrol doesn't produce lead in the atmosphere.
  3. Catalytic converter reduces emissions of three harmful compounds found in car exhaust which are
  • Carbon monoxide (a poisonous gas)
  •  Nitrogen oxides (a cause of smog and acid rain) 
  • Hydrocarbons (a cause of smog)
  • So, the correct option is 'All of these'.

Multiple choice evs atmosphere- wind weather, climate and adaptation of animals to different climates climate and weather weather, climate and adaptations of animals to climate

PAN is

  1. poisonous american nuisance

  2. primary air pollutant

  3. photochemical oxidant

  4. particulate atmospheric nitrogen compound
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

PAN (Peroxyacytyl nitrate) is a toxic chemical that is an important component of smog.PAN molecules are generally composed of carbon, hydrogen, oxygen, and nitrogen atoms.

So the correct answer will be 'PARTICULATE ATMOSPHERIC NITROGEN COMPOUND'.

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

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. 

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

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.