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

Fumes of automobiles contain

  1. carbon monoxide

  2. sulphur dioxide

  3. carbon dioxide

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

Carbon monoxide is a primary product of incomplete combustion in automobile engines and is the most distinctive component of automobile exhaust among the options.

Multiple choice

Photochemical smog is the chemical reaction of

  1. sunlight

  2. nitrogen oxides

  3. volatile organic compounds (VOC) in the atmosphere

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

Photochemical smog forms when sunlight (UV radiation) reacts with nitrogen oxides and volatile organic compounds in the atmosphere. All three components are essential - sunlight provides the energy, nitrogen oxides primarily come from vehicle exhaust, and VOCs come from various industrial and natural sources. The reaction creates harmful secondary pollutants like ozone and peroxyacyl nitrates.

Multiple choice

Which one of the following pollutes the environment?

  1. Oxygen

  2. Carbon monoxide

  3. Nitrogen

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

Carbon monoxide is a toxic gas that pollutes the air and is harmful to human health. Oxygen, nitrogen, and hydrogen are natural components of air and are not considered pollutants in their normal atmospheric concentrations.

Multiple choice

Acid rain is mainly caused due to increase in the levels of

  1. SO2 only

  2. CO2 only

  3. SO2 and CO2

  4. NO2 and SO2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Acid rain results from the emission into the atmosphere of various pollutant gases in particular sulphur dioxide (SO2) and oxides of nitrogen (NO2), which originate from the burning of fossil fuels and from motor-car exhaust fumes, respectively.

Multiple choice

Which of the following are some important pollutants released by the steel industry in India?

  1. Oxides of sulphur
  2. Oxides of nitrogen
  3. Carbon monoxide
  4. Carbon dioxide

Select the correct answer from the following options.

  1. 1, 3 and 4 only

  2. 2 and 3 only

  3. 1 and 4 only

  4. 1, 2, 3 and 4
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a steel furnace, coke reacts with iron ore, releasing iron and generating CO and CO2 gases. Due to use of coal, pollutants such as SOx, and NOx are released, thus all are correct options.

Multiple choice

How can air pollution be controlled?

  1. Planting rose plants

  2. Driving at fast speed

  3. Planting plants like daucus carota

  4. Using nuclear energy for all purposes
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Planting trees like daucus carota helps in controlling air pollution.

Multiple choice

The major harmful gas emitted by automobile vehicles which causes air pollution is

  1. Carbon Monoxide

  2. Methane

  3. Carbon dioxide

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

Carbon monoxide (CO) is the primary harmful gas emitted by automobiles. It is highly toxic because it binds to hemoglobin more strongly than oxygen, reducing blood's oxygen-carrying capacity and causing asphyxiation. While methane and CO2 are also emitted, CO is the most directly harmful to human health at typical concentrations.