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Control Of Pollution Quiz 26 (10 MCQs)

This set of multiple-choice questions evaluates understanding of bioremediation processes, pollution control methods, and microorganism applications. It covers concepts such as phytoremediation, soil contamination control, air pollution management, and emission reduction strategies. The material also explores urban traffic management, vehicular emission reduction, and sustainable mining practices.

Quiz Instructions

Select an option to see the correct answer instantly.

1. Which of the following is wrong Solution for mining pollution

Correct Answer: Correct answer is: (D) Shutting down all mining process.

Exam Relevance: Environmental Science Exams, Mining Engineering Exams, Environmental Management Exams

Difficulty: Moderate

Concept notes: Mining pollution control involves managing and reducing the environmental impact of mining activities. Shutting down all mining processes is not a practical or realistic solution as mining is essential for many industries and economic activities.

Common Mistakes: A common misunderstanding is that completely stopping mining is a viable solution to pollution. However, this approach is impractical and does not address the need for mineral resources.

Explanations: Shutting down all mining processes is not a feasible solution for controlling pollution. While it would eliminate mining-related pollution, it would also halt the supply of essential minerals and materials needed for various industries, leading to significant economic and social disruptions. Instead, more practical solutions such as closing illegal and unregulated mines, using eco-friendly equipment, and rehabilitating mining sites are more effective and sustainable approaches to managing mining pollution.

Option Analysis:

Option A: Closing illegal and unregulated mines is a practical solution to reduce pollution.
Option B: Using eco-friendly equipment can significantly reduce the environmental impact of mining.
Option C: Rehabilitating mining sites helps in restoring the environment and reducing long-term pollution.
Option D: Shutting down all mining processes is not a practical solution and would have severe economic consequences.

2. How has Mexico City's government tried to address its air pollution problem?

Correct Answer: Correct answer is: (A) Restricted automobile use in the city.

Exam Relevance: Environmental Science Exams, Urban Planning Exams, Public Health Exams

Difficulty: Moderate

Concept notes: Air pollution in Mexico City is primarily caused by vehicular emissions. Restricting automobile use is a common strategy to reduce air pollution in urban areas.

Common Mistakes: A common misunderstanding is that water sanitation plants or limiting mining activities would directly address air pollution, which is not the case.

Explanations: Mexico City's government has implemented measures to restrict automobile use, such as the "Hoy No Circula" program, which bans certain vehicles from driving on specific days based on their license plate numbers. This strategy aims to reduce vehicular emissions and improve air quality.

Option Analysis:

Option A: Correct. Restricting automobile use is a direct method to reduce vehicular emissions, which are a major source of air pollution in Mexico City.
Option B: Incorrect. Building water sanitation plants addresses water pollution, not air pollution.
Option C: Incorrect. Limiting mining in the mountains near the city may reduce some pollution, but it is not a primary method for addressing air pollution in the city itself.
Option D: Incorrect. Banning cutting down trees is important for environmental conservation but does not directly address vehicular emissions, which are the primary source of air pollution in Mexico City.

3. The best method to clean up a river is by using different minerals based on hydrogeochemical condition of water can be considered as an efficient approach.

Correct Answer: Correct answer is: A) True.

Exam Relevance: Environmental Science Exams, Environmental Engineering Exams, Water Quality Management Exams

Difficulty: Moderate

Concept notes: The use of different minerals based on the hydrogeochemical condition of water can be an efficient approach to clean up a river.

Common Mistakes: A common misunderstanding is that a single mineral can be universally effective for river cleanup, ignoring the specific hydrogeochemical conditions of the water.

Explanations: Different minerals can be used to address specific pollutants and contaminants in river water based on the hydrogeochemical conditions. For example, certain minerals can adsorb heavy metals, while others can neutralize acidic water. This targeted approach is more effective than a one-size-fits-all method, making it a valid and efficient strategy for river cleanup.

Option Analysis:

Option A: This option is correct because using different minerals based on the specific hydrogeochemical conditions of the water can effectively address various pollutants and contaminants in the river.
Option B: This option is incorrect because it suggests that the method is not efficient, which contradicts the effectiveness of using targeted minerals based on the water's conditions.

4. What is one way the UK government has tried to reduce air pollution?

Correct Answer: Correct answer is: (B) Charging drivers fees to enter crowded city areas.

Exam Relevance: Environmental Science Exams, Urban Planning Exams, Public Policy Exams

Difficulty: Moderate

Concept notes: The UK government has implemented various measures to reduce air pollution, including charging drivers fees to enter crowded city areas. This approach aims to discourage the use of private vehicles in urban centers, thereby reducing emissions and improving air quality.

Common Mistakes: A common misunderstanding is that building more highways or encouraging coal use would reduce air pollution, which is incorrect as these actions would likely increase pollution.

Explanations: Charging drivers fees to enter crowded city areas is a strategy known as congestion pricing. This policy aims to reduce the number of vehicles in high-traffic areas, which in turn decreases emissions and improves air quality. By making it more expensive to drive in these areas, the government encourages the use of public transportation, walking, or cycling, all of which are less polluting alternatives.

Option Analysis:

Option A: Building more highways for cars would likely increase the number of vehicles on the road, thereby increasing air pollution.
Option B: Charging drivers fees to enter crowded city areas is a valid strategy to reduce air pollution by discouraging the use of private vehicles in urban centers.
Option C: Encouraging people to use more coal at home would increase air pollution due to the high emissions from coal combustion.
Option D: Closing all major airports would significantly disrupt transportation and is not a practical or commonly implemented measure to reduce air pollution.

5. Using plants to absorb and merely hold contaminants so they don't migrate further down in soil strata.

Correct Answer: Correct answer is: (A) Phytostabilization.

Exam Relevance: Environmental Science exams, Environmental Engineering exams, Soil Science exams

Difficulty: Moderate

Concept notes: Phytostabilization is a method used in environmental remediation where plants are used to absorb and hold contaminants in the soil, preventing them from migrating further down into the soil strata.

Common Mistakes: A common misunderstanding is confusing phytostabilization with phytoextraction, which involves plants absorbing contaminants and removing them from the soil.

Explanations: Phytostabilization involves the use of plants to absorb and hold contaminants in the soil, preventing their migration. This method is particularly useful for stabilizing contaminants in place, rather than removing them entirely. The plants act as a barrier, immobilizing the contaminants and preventing them from leaching deeper into the soil or spreading to other areas.

Option Analysis:

Option A: Correct. Phytostabilization involves using plants to absorb and hold contaminants in the soil, preventing their migration.
Option B: Incorrect. Phytoextraction involves plants absorbing contaminants and removing them from the soil, not just holding them in place.
Option C: Incorrect. Phytotaxy is the study of plant arrangement and is not related to environmental remediation.
Option D: Incorrect. Phytodegradation involves plants breaking down contaminants, not merely holding them in place.

6. Bacteria that accumulate chemicals being injected in the soil is an example of

Correct Answer: Correct answer is: (A) Bioremediation.

Exam Relevance: Environmental Science Exams, Environmental Engineering Exams, Pollution Control Exams

Difficulty: Moderate

Concept notes: Bioremediation is the use of living organisms, such as bacteria, to clean up pollutants in the environment.

Common Mistakes: A common misunderstanding is confusing bioremediation with other remediation methods that do not involve living organisms.

Explanations: Bacteria that accumulate chemicals being injected into the soil is an example of bioremediation. This process involves the use of microorganisms to degrade or transform environmental pollutants into less toxic forms. The bacteria can break down harmful chemicals, reducing their concentration and toxicity in the soil.

Option Analysis:

Option A: Correct. Bioremediation involves the use of living organisms to clean up pollutants.
Option B: Incorrect. Biophotonremediation is not a recognized term in the context of pollution control.
Option C: Incorrect. Phytoremediation involves the use of plants to remove pollutants, not bacteria.
Option D: Incorrect. Incineremediation is not a recognized term in the context of pollution control.

Mnemonic: Bio = Biological, Rem = Remove, I = In

7. How do you manage this waste?

Correct Answer: Correct answer is: (C) Filter the smoke before release it to the air.

Exam Relevance: Environmental Science Exams, Engineering Exams, Environmental Management Exams

Difficulty: Moderate

Concept notes: Filtering smoke before releasing it to the air is a common method to control air pollution. This process removes harmful particles and chemicals from the smoke, reducing the environmental impact.

Common Mistakes: A common misunderstanding is that coloring the smoke or releasing it at night can effectively manage pollution. These methods do not address the core issue of harmful emissions.

Explanations: Filtering the smoke before releasing it to the air is the most effective method to manage waste and control pollution. This process involves using filters or scrubbers to remove particulate matter and other pollutants from the smoke, thereby reducing the harmful emissions released into the atmosphere.

Option Analysis:

Option A: Coloring the smoke in white does not address the core issue of harmful emissions and does not reduce pollution.
Option B: Releasing smoke at night does not reduce the amount of pollution; it merely shifts the timing of the release.
Option C: Filtering the smoke before release is the most effective method to control pollution by removing harmful particles and chemicals.
Option D: Closing all factories is not a practical solution and would have significant economic and social impacts.

8. The scrubber is used mainly to remove which of thefollowing gas/es from the exhaust after spraying water/lime?

Correct Answer: Correct answer is: (B) SO2.

Exam Relevance: GATE, GRE, Environmental Engineering Exams

Difficulty: Moderate

Concept notes: Scrubbers are used in pollution control to remove harmful gases from exhaust streams. The primary function of a scrubber is to remove sulfur dioxide (SO2) from exhaust gases, which is a major pollutant produced by industrial processes, particularly in coal-fired power plants.

Common Mistakes: A common misunderstanding is that scrubbers are primarily used to remove carbon dioxide (CO2). While scrubbers can remove some CO2, their main purpose is to remove SO2 due to its significant environmental impact.

Explanations: Scrubbers are designed to remove SO2 from exhaust gases by spraying water or lime into the gas stream. The lime reacts with the SO2 to form calcium sulfite or calcium sulfate, which can be removed as a solid waste. This process is highly effective in reducing SO2 emissions, which are a major contributor to acid rain and other environmental issues.

Option Analysis:

Option A: CO2 is not the primary target of scrubbers, although some CO2 can be removed.
Option B: SO2 is the primary target of scrubbers, as they are designed to remove this pollutant effectively.
Option C: O2 and N2 are not pollutants and are not targeted by scrubbers.
Option D: CO and CO2 are not the primary targets of scrubbers, although some CO2 can be removed.

9. One way to reduce factory pollution is to:

Correct Answer: Correct answer is: (A) Find alternative methods of production.

Exam Relevance: Environmental Science Exams, Industrial Engineering Exams, Sustainability Exams

Difficulty: Easy

Concept notes: Reducing factory pollution involves finding ways to produce goods with fewer harmful emissions and waste.

Common Mistakes: A common mistake is to confuse pollution control methods with personal lifestyle choices or unrelated environmental issues.

Explanations: Finding alternative methods of production can significantly reduce pollution by minimizing the use of harmful chemicals, reducing energy consumption, and decreasing waste generation. This approach directly addresses the source of pollution in factories.

Option Analysis:

Option A: Correct. Alternative methods of production can reduce pollution by minimizing harmful emissions and waste.
Option B: Incorrect. Reducing the amount of cattle raised for beef is not directly related to factory pollution control.
Option C: Incorrect. Walking or carpooling is a personal lifestyle choice and does not directly impact factory pollution.
Option D: Incorrect. Keeping a home clean and free of dust and mold is a personal hygiene measure and does not address factory pollution.

10. It was found that water sources and air are being purified due to Corona lockdown.

Correct Answer: Correct answer is: (D) All of the above.

Exam Relevance: Environmental Science Exams, Pollution Control Exams, Environmental Management Exams

Difficulty: Moderate

Concept notes: The question addresses the impact of the Corona lockdown on pollution control. The lockdown led to a significant reduction in industrial and vehicular activities, which in turn improved air and water quality.

Common Mistakes: A common mistake could be to overlook the combined effect of multiple factors (factory closures, reduced vehicular traffic, and less waste generation) on pollution control.

Explanations: The Corona lockdown led to a decrease in industrial activities, resulting in fewer emissions and pollutants from factories. This contributed to the purification of air and water sources. Additionally, with fewer vehicles on the road, there was a reduction in vehicular emissions, further improving air quality. Lastly, the lockdown also led to a decrease in waste generation, which helped in reducing pollution in water sources. Therefore, all the factors mentioned (factory closures, reduced vehicular traffic, and less waste generation) contributed to the purification of air and water sources.

Option Analysis:

Option A: Factory closures reduced industrial emissions, contributing to cleaner air and water.
Option B: Decrease in the number of vehicles on the road reduced vehicular emissions, improving air quality.
Option C: Less generation of waste reduced pollution in water sources.
Option D: All of the above factors contributed to the purification of air and water sources.

Frequently Asked Questions

What is the main goal of pollution control?

The main goal of pollution control is to reduce the release of harmful substances into the environment to protect human health and ecosystems.

How does bioremediation help in environmental remediation?

Bioremediation uses microorganisms to break down environmental pollutants, effectively cleaning up contaminated sites and restoring ecological balance.

What is the purpose of scrubber technology in industrial emissions?

Scrubber technology is used to remove pollutants from industrial exhaust gases, such as SO2, before they are released into the atmosphere, reducing air pollution.

How does congestion pricing help manage urban traffic?

Congestion pricing charges drivers for entering high-traffic areas during peak times, reducing vehicular emissions and improving traffic flow in urban centers.

What is phytostabilization and how is it used?

Phytostabilization is a method that uses plants to stabilize soil contaminants, preventing their spread and aiding in the long-term remediation of polluted sites.

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