Environmental Studies ยท General Awareness
Waste Management and Pollution
2,184 Questions
Waste management and pollution control address waste-to-energy technologies, hazardous disposal, and organic recycling methods. The questions cover landfilling, bioremediation, and marine debris indicators. This topic holds significant weight in UPSC, State PSC, and SSC general studies and environmental exams.
Waste-to-energy technologiesHazardous waste disposalBiogas storage methodsOrganic waste compostingPlastic pollution
Waste Management and Pollution Questions
What is the primary method of waste disposal in a landfill?
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Landfilling
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Incineration
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Recycling
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Composting
A
Correct answer
Explanation
Landfilling is the primary method of waste disposal in a landfill, where waste is deposited and compacted in a controlled manner.
What is the role of daily cover in a landfill?
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To prevent odors and pests
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To control dust and windblown litter
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To prevent rainwater from infiltrating the landfill
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All of the above
D
Correct answer
Explanation
Daily cover is a layer of material, typically soil or other approved materials, that is placed over the waste at the end of each day's operation to prevent odors, control dust and windblown litter, and prevent rainwater from infiltrating the landfill.
What is the final cover system in a landfill?
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A layer of soil or other approved materials placed over the waste at the end of the landfill's life
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A layer of geosynthetic materials placed over the waste at the end of the landfill's life
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A combination of soil and geosynthetic materials placed over the waste at the end of the landfill's life
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None of the above
C
Correct answer
Explanation
The final cover system in a landfill typically consists of a combination of soil and geosynthetic materials, such as a geomembrane, placed over the waste at the end of the landfill's life to prevent infiltration of rainwater and protect the environment.
What is the primary method of leachate treatment in a landfill?
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Biological treatment
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Chemical treatment
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Physical treatment
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A combination of the above
D
Correct answer
Explanation
Leachate treatment in a landfill typically involves a combination of biological, chemical, and physical treatment processes to remove contaminants and pollutants from the leachate.
What is the estimated amount of plastic waste that System 002 can remove from oceans per year?
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100,000 tons
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1 million tons
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10 million tons
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100 million tons
B
Correct answer
Explanation
The Ocean Cleanup estimates that System 002 can remove approximately 1 million tons of plastic waste from oceans per year, significantly reducing the amount of plastic pollution in marine ecosystems.
How does the Plastic Fischer technology work to remove plastic waste from oceans?
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Using nets to catch plastic waste
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Employing magnets to collect plastic waste
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Utilizing solar energy to break down plastic waste
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Releasing microorganisms to digest plastic waste
A
Correct answer
Explanation
The Plastic Fischer technology uses nets to catch plastic waste from oceans. The nets are designed to collect plastic waste of various sizes, including microplastics, and prevent it from further polluting marine ecosystems.
What is the significance of the Ocean Cleanup Array technology in addressing plastic pollution in oceans?
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It can remove plastic waste from deep ocean trenches
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It can capture plastic waste from remote ocean regions
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It can process plastic waste into reusable materials
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It can prevent plastic waste from entering oceans in the first place
B
Correct answer
Explanation
The Ocean Cleanup Array technology is designed to capture plastic waste from remote ocean regions that are difficult to access using traditional cleanup methods. By targeting these regions, the Ocean Cleanup Array can significantly reduce the amount of plastic waste accumulating in oceans.
Which type of waste is commonly used as feedstock for Waste-to-Energy technologies?
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Municipal Solid Waste
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Industrial Waste
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Agricultural Waste
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All of the above
D
Correct answer
Explanation
Waste-to-Energy technologies can utilize various types of waste as feedstock, including municipal solid waste, industrial waste, and agricultural waste.
What is the primary technology used for converting waste into electricity?
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Incineration
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Gasification
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Pyrolysis
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Anaerobic Digestion
A
Correct answer
Explanation
Incineration is the primary technology used for converting waste into electricity. It involves burning the waste at high temperatures to generate steam, which drives a turbine to produce electricity.
Which technology converts waste into a combustible gas?
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Incineration
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Gasification
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Pyrolysis
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Anaerobic Digestion
B
Correct answer
Explanation
Gasification is a technology that converts waste into a combustible gas called syngas. This gas can be used to generate electricity, heat, or fuel.
Which technology converts organic waste into biogas?
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Incineration
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Gasification
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Pyrolysis
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Anaerobic Digestion
D
Correct answer
Explanation
Anaerobic Digestion is a technology that converts organic waste into biogas, a mixture of methane and carbon dioxide. This biogas can be used to generate electricity, heat, or fuel.
Which technology is commonly used for converting waste into liquid fuels?
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Incineration
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Gasification
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Pyrolysis
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Hydrothermal Liquefaction
D
Correct answer
Explanation
Hydrothermal Liquefaction is a technology that converts waste into liquid fuels through a process involving high pressure, high temperature, and water.
Which technology is commonly used for converting waste into solid fuels?
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Incineration
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Gasification
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Pyrolysis
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Torrefaction
D
Correct answer
Explanation
Torrefaction is a technology that converts waste into solid fuels through a process involving heating the waste in the absence of oxygen.
What is the primary advantage of Waste-to-Energy technologies over traditional waste disposal methods?
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Reduced greenhouse gas emissions
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Diverted waste from landfills
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Generation of renewable energy
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All of the above
D
Correct answer
Explanation
Waste-to-Energy technologies offer several advantages over traditional waste disposal methods, including reduced greenhouse gas emissions, diverted waste from landfills, and generation of renewable energy.
Which technology is commonly used for converting waste into hydrogen?
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Incineration
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Gasification
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Pyrolysis
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Steam Reforming
D
Correct answer
Explanation
Steam Reforming is a technology that converts waste into hydrogen through a process involving high temperature and steam.