- Which of the following is a primary air pollutant released directly into the atmosphere?
a. Ozone (O3)
b. Sulfur dioxide (SO2)
c. Nitrogen oxides (NOx)
d. Carbon monoxide (CO)
Answer: d. Carbon monoxide (CO)
- What is the major source of anthropogenic emissions of sulfur dioxide (SO2) into the air?
a. Forest fires
b. Volcanic eruptions
c. Burning of fossil fuels
d. Agricultural activities
Answer: c. Burning of fossil fuels
- Which air pollutant is associated with the formation of acid rain?
a. Carbon monoxide (CO)
b. Nitrogen oxides (NOx)
c. Ozone (O3)
d. Particulate matter (PM)
Answer: b. Nitrogen oxides (NOx)
- What is the primary source of indoor air pollution in households using solid fuels for cooking and heating?
a. Tobacco smoke
b. Radon gas
c. Volatile organic compounds (VOCs)
d. Particulate matter (PM) from combustion
Answer: d. Particulate matter (PM) from combustion
- Which air pollutant is known for its harmful effects on respiratory health and is a major component of smog?
a. Carbon monoxide (CO)
b. Sulfur dioxide (SO2)
c. Nitrogen dioxide (NO2)
d. Particulate matter (PM)
Answer: c. Nitrogen dioxide (NO2)
- What is the primary cause of the depletion of the ozone layer in the stratosphere?
a. Carbon monoxide emissions
b. Methane (CH4) emissions
c. Chlorofluorocarbon (CFC) emissions
d. Nitrous oxide (N2O) emissions
Answer: c. Chlorofluorocarbon (CFC) emissions
- Which air pollutant is associated with the “photochemical smog” formed in the presence of sunlight?
a. Sulfur dioxide (SO2)
b. Carbon monoxide (CO)
c. Ozone (O3)
d. Particulate matter (PM)
Answer: c. Ozone (O3)
- What is the main source of lead (Pb) in the atmosphere, which can lead to air pollution and pose health risks?
a. Industrial emissions
b. Motor vehicle exhaust
c. Agricultural activities
d. Volcanic eruptions
Answer: b. Motor vehicle exhaust
- Which air pollutant is a greenhouse gas that contributes to global warming and climate change?
a. Carbon monoxide (CO)
b. Methane (CH4)
c. Sulfur dioxide (SO2)
d. Nitrogen oxides (NOx)
Answer: b. Methane (CH4)
- What is the term for the process by which pollutants are removed from the atmosphere by precipitation, such as rain or snow?
a. Filtration
b. Deposition
c. Absorption
d. Oxidation
Answer: b. Deposition
- Which air pollutant is a colorless, odorless gas that is a product of incomplete combustion and poses a health risk in enclosed spaces?
a. Nitrogen dioxide (NO2)
b. Carbon monoxide (CO)
c. Sulfur dioxide (SO2)
d. Ozone (O3)
Answer: b. Carbon monoxide (CO)
- What is the primary source of emissions for volatile organic compounds (VOCs) in the atmosphere?
a. Industrial processes
b. Forest fires
c. Volcanic eruptions
d. Agricultural activities
Answer: a. Industrial processes
- Which air pollutant is a major component of secondhand smoke and is known to cause respiratory and cardiovascular diseases?
a. Particulate matter (PM)
b. Nitrogen dioxide (NO2)
c. Carbon monoxide (CO)
d. Benzene
Answer: d. Benzene
- What is the primary source of indoor air pollution caused by radon gas?
a. Industrial emissions
b. Combustion of fossil fuels
c. Soil and rock beneath buildings
d. Agricultural activities
Answer: c. Soil and rock beneath buildings
- Which air pollutant can lead to the formation of ground-level ozone through a series of chemical reactions in the presence of sunlight?
a. Nitrogen oxides (NOx)
b. Carbon monoxide (CO)
c. Sulfur dioxide (SO2)
d. Particulate matter (PM)
Answer: a. Nitrogen oxides (NOx)
- What is the main source of particulate matter (PM) in urban areas?
a. Construction activities
b. Agricultural activities
c. Volcanic eruptions
d. Marine emissions
Answer: a. Construction activities
- Which air pollutant is a major component of “acid rain,” causing environmental damage to soil, water, and vegetation?
a. Ozone (O3)
b. Sulfur dioxide (SO2)
c. Particulate matter (PM)
d. Nitrogen dioxide (NO2)
Answer: b. Sulfur dioxide (SO2)
- What is the primary cause of indoor air pollution resulting from household activities such as cooking and heating?
a. Radon gas
b. Tobacco smoke
c. Mold spores
d. Volatile organic compounds (VOCs)
Answer: d. Volatile organic compounds (VOCs)
- Which air pollutant is associated with the formation of “brown smog” and can irritate the eyes and respiratory system?
a. Carbon monoxide (CO)
b. Nitrogen dioxide (NO2)
c. Ozone (O3)
d. Hydrogen sulfide (H2S)
Answer: d. Hydrogen sulfide (H2S)
- What is the term for the process by which plants absorb and incorporate carbon dioxide (CO2) from the atmosphere during photosynthesis?
a. Oxidation
b. Respiration
c. Transpiration
d. Carbon sequestration
Answer: d. Carbon sequestration
Q 21. Which of the following assertions regarding SMOG is true?
- SMOG originates from fog.
- SMOG is formed from smoke.
- SMOG originates from water vapor.
- SMOG originates through the combination of fog and smoke.
Answer- Option (1) is correct.
Q 22. The main contributors of __ include fumes, ash, nitric oxide, smoke, dust, and sulfur dioxide.
- Primary Pollutants.
- Secondary pollutants.
- Biodegradable Pollutants.
- None of the above.
Answer- Option (1) is correct.
Q 23. Increased levels of air pollution primarily cause _
- Soil erosion
- Global Warming
- Respiratory complications
- all of the above
Answer- Option (3) is correct.
Q 24. The atmosphere is naturally composed of many gases which are present in different ratios. Which gas is present in the highest quantity?
- Oxygen
- Nitrogen
- Hydrogen
- Both (1) and (2)
Answer- Option (2) is correct.
Q 25. Particulate matter are minute particles that remain suspended in the air and cause irritation when inhaled. Which of the following is an example of particulate matter?
- Nitrogen Dioxide
- Water Vapor
- Ozone
- Fly ash.
Answer- Option (4) is correct.
Q 26. How many distinct types of main pollutants account for around 90% of worldwide air pollution?
- 3
- 5
- 7
- None of the preceding.
Answer- Option (2) is correct.
Q 27. In order to control the emission of harmful gases into the atmosphere, a catalytic converter can be used. What of the following are the effects of this device?
- Conversion of carbon monoxide into carbon dioxide.
- Conversion of nitric oxides into nitrogen dioxide.
- Conversion of hydrocarbons into water and carbon dioxide.
- All of these
Answer- Option (4) is correct.
Q 28. Which of the following devices is most effective in removing particulate matter from industrial effluents?
- Cyclonic separator.
- Electrostatic precipitator.
- Scrubber.
- Catalytic converter.
Answer- Option (2) is correct.
Q 29. Which of the following condition cannot be caused by inhaling particulate matter?
- Asthma
- Irritation
- Bronchitis, Premature death
- Rhinitis and gastroenteritis.
Answer- Option (4) is correct.
Q 30. Why is compressed natural gas (CNG) preferable to petrol?
- It burns the most effectively
- It is the more expensive
- It ignites less efficiently
- It can be tainted.
Answer- Option (1) is correct.
Q 31. Which devices are fitted with catalytic converters?
- Plants
- Automobiles
- Electrostatic precipitator
- Cycles
Answer- Option (2) is correct.
Q 32. Which element in an electrostatic precipitation system can remove gases such as sulfur dioxide using a spray of water or lime?
- Detergent
- Electrode wires
- Corona
- Scrubber
Answer- Option (4) is correct.
Q 33. Which industries emit particle air pollution in addition to innocuous gases like nitrogen and oxygen?
- Oil industry
- IVF(In vitro fertilization clinics)
- Plant tissue culture labs
- Thermal power plants and smelters
Answer- Option (4) is correct.
Q 34. CFCs(Chlorofluorocarbons) have not been designated for use in refrigerators since they
- raise the temperature
- degrade ozone layer
- harm the ecosystem
- harm the human body.
Answer- Option (2) is correct.
Q 35. Fluorocarbons are among the contaminants that jet aircraft produced in the outer atmosphere and are referred to as
- Smog
- Photochemical oxidants.
- Loess
- Aerosols
Answer- Option (4) is correct.