Pollution and its control have become crucial topics in today’s world as environmental challenges continue to grow. In this article, Pollution and Pollution Control GK MCQs With Answer & Explanation in English, we provide a comprehensive set of multiple-choice questions designed to enhance your understanding of various types of pollution, their causes, and the measures to control them.
Each question is accompanied by detailed explanations to deepen your knowledge and prepare you for exams or general awareness. Dive in to explore and expand your grasp of this important subject!
1. Which country is the world’s largest emitter of anthropogenic Sulphur Dioxide (SO2), according to the latest report by environmental NGO Greenpeace?
- Iran
- India
- Russia
- South Africa
Answer: India
According to a recent analysis by Greenpeace using NASA’s OMI satellite data, India holds the unenviable position of being the world’s largest emitter of Sulphur Dioxide (SO2). India contributes to over 15% of all anthropogenic SO2 hotspots globally. Major emission hotspots in the country include Singrauli, Neyveli, Chennai, Talcher, Jharsuguda, Korba, Kutch, Ramagundam, Chandrapur, and Koradi. SO2 is a harmful air pollutant that can have adverse effects on human health and the environment, leading to respiratory problems and acid rain.
2. India’s CO2 emissions growth poised to slow sharply by what % in 2019, according to an analysis published in Carbon Brief?
- 3%
- 1%
- 4%
- 2%
Answer: 2%
An analysis by Carbon Brief indicated that India’s Carbon Dioxide (CO2) emissions growth was expected to decrease by 2% in 2019. This decline was attributed to a slower growth rate in coal-based power generation and an increase in renewable power generation. The shift towards cleaner energy sources and reduced coal consumption is a positive development in the context of climate change and air quality improvement.
3. Which of the following can be classified under Primary pollutants?
1. Plastic
2. Sulphur Dioxide
3. Nitrogen oxide
4. Ozone
Choose the right option:
- Only 1 and 2
- Only 2 and 3
- Only 1 and 4
- All 1, 2, 3, 4
Answer: Only 2 and 3
Primary pollutants are substances that directly enter the environment in their original form. Examples include Sulphur Dioxide (SO2) and Nitrogen Oxides (NOx). These pollutants are emitted directly from sources like industrial processes and vehicle exhausts and can have immediate negative effects on air quality and health.
4. Which of the following can be categorised as quantitative pollutants?
1.Carbon Dioxide
2.Carbon Monoxide
3.DDT
4.Methane
Choose the right option:
- Only 1 and 2
- Only 2 and 3
- Only 1, 2 and 4
- All 1, 2, 3, 4
Answer: Only 1, 2 and 4
Quantitative pollutants are substances that naturally exist in the environment but become pollutants when their levels exceed certain limits. Examples include Carbon Dioxide (CO2), Carbon Monoxide (CO), and Methane (CH4). These pollutants, when present in excess, can contribute to air pollution and climate change.
5. Which of the following is true about Carbon Monoxide?
- It is naturally present in the environment
- It is a colorless gas
- Both
- None
Answer: It is a colorless gas
Carbon Monoxide is a colorless and odorless gas produced primarily by the incomplete combustion of carbon-based fuels such as gasoline and wood. It is not naturally present in the environment and poses health risks when inhaled, as it can interfere with oxygen transport in the bloodstream.
6. Which of the following are the constituents of Photochemical Smog?
- Sunlight
- Volatile Organic Compounds
- Nitrogen Oxides
- All of the above are true
Answer: All of the above are true
Photochemical smog forms when sunlight reacts with Nitrogen Oxides (NOx) and Volatile Organic Compounds (VOCs) in the atmosphere. It leads to the creation of ground-level ozone and other harmful pollutants, contributing to poor air quality in urban areas.
7. Which of the following is true in context of Volatile Organic Compounds?
- They are the compounds that do not easily become vapour
- They are released from burning gasoline, wood, etc.
- They are the main component of ozone
- 1 and 2 only
Answer: They are released from burning gasoline, wood, etc.
Volatile Organic Compounds are released from various sources, including the burning of gasoline, wood, and other materials. While they are not the primary component of ozone, they are a key factor in the formation of ground-level ozone and can have adverse health effects upon exposure.
8. Which of the following are the harmful effects of Volatile Organic Compounds?
- Cancer
- Irritation in eyes
- Visual disorder
- All of the above are true
Answer: All of the above are true
Exposure to Volatile Organic Compounds can lead to various health issues, including irritation of the eyes, nose, and throat, as well as headaches, dizziness, and in some cases, the development of cancer and visual disorders.
9. Which of the following are the main sources of indoor air pollution?
1.Excess moisture
2.New carpets
3.Outdoor pollution
4.Pesticides
Choose the right option:
- Only 1, 2, 3
- Only 2, 3, 4
- Only 1 and 2
- All 1, 2, 3, 4
Answer: All 1, 2, 3, 4
Indoor air pollution can arise from multiple sources, including excess moisture, the release of volatile compounds from new carpets and furniture, infiltration of outdoor pollutants, and the use of pesticides and household cleaning products. It poses health risks to occupants and underscores the importance of indoor air quality management.
10. Which of the following is true about Fly ash?
- It is produced while burning solid material.
- It is very fine gas and rises easily with the air.
- It can lower plant yield.
- 1, 2, and 3
Answer: It is produced while burning solid material.
Fly ash is a fine, powdery residue produced when solid materials are burned, commonly in power plants. When fly ash settles on plant leaves, it can negatively impact plant yield and ecosystem health due to its potential toxicity.
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