Environmental Studies ยท Chemistry
Environmental and Chemical Processes
2,324 Questions
Environmental and chemical processes encompass waste management, pollution remediation, and biogas conversion. These questions evaluate your grasp of how organic and synthetic materials interact with ecosystems. Such topics regularly appear in general science and environmental studies papers.
Waste managementBiogas conversionPhytoremediationSoil washingPollution control
Environmental and Chemical Processes Questions
What is the term used for the process of recovering valuable materials from electronic waste using microorganisms?
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Pyrometallurgy
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Hydrometallurgy
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Biometallurgy
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Electrometallurgy
C
Correct answer
Explanation
Biometallurgy is the process of recovering valuable metals from electronic waste using microorganisms. It involves the use of bacteria or fungi to extract metals from electronic waste in a sustainable manner.
What is the term used for the process of recovering valuable materials from electronic waste using electrical energy?
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Pyrometallurgy
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Hydrometallurgy
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Biometallurgy
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Electrometallurgy
D
Correct answer
Explanation
Electrometallurgy is the process of recovering valuable metals from electronic waste using electrical energy. It involves passing an electric current through the electronic waste to separate the metals from other materials.
What is the term used for the process of recovering valuable materials from electronic waste using chemical reactions?
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Pyrometallurgy
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Hydrometallurgy
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Biometallurgy
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Electrometallurgy
B
Correct answer
Explanation
Hydrometallurgy is the process of recovering valuable metals from electronic waste using chemical reactions. It involves dissolving the metals in a chemical solution and then using various processes to separate and recover the desired metals.
What is the term used to describe the process of reducing air pollution by removing pollutants from the air?
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Air purification
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Air filtration
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Air scrubbing
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Air remediation
C
Correct answer
Explanation
Air scrubbing is a process that removes pollutants from the air by passing it through a medium that traps or absorbs the pollutants. This can be done using various technologies, such as wet scrubbers, dry scrubbers, and electrostatic precipitators.
What is the term used to describe the process of reducing air pollution by using cleaner technologies and processes?
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Pollution prevention
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Source reduction
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End-of-pipe treatment
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Air pollution control
A
Correct answer
Explanation
Pollution prevention refers to the practice of reducing air pollution by using cleaner technologies and processes that generate fewer pollutants. This can involve using more efficient equipment, switching to cleaner fuels, or implementing better waste management practices.
What is the term for the process of removing pollutants from the air before they are released into the atmosphere?
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Air pollution control
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Emission reduction
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Pollution prevention
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Air quality management
A
Correct answer
Explanation
Air pollution control is the process of removing pollutants from the air before they are released into the atmosphere. This can be done using a variety of methods, such as scrubbers, filters, and catalytic converters.
What is the term used to describe the process of converting waste materials into usable materials and objects?
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Recycling
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Composting
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Upcycling
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Downcycling
C
Correct answer
Explanation
Upcycling involves transforming waste materials or unwanted products into new items of better quality or perceived value.
What is the term used to describe the practice of reducing the amount of waste produced?
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Recycling
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Composting
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Upcycling
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Reduce
D
Correct answer
Explanation
Reduce refers to the practice of minimizing the amount of waste generated by consuming less, choosing products with less packaging, and avoiding single-use items.
What is the process of removing impurities from biogas called?
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Biofiltration
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Bioremediation
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Biogas Purification
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Biogas Enrichment
C
Correct answer
Explanation
Biogas purification is the process of removing impurities such as hydrogen sulfide and moisture from biogas to enhance its quality and usability.
What is the term for the process by which forests absorb carbon dioxide from the atmosphere?
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Photosynthesis
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Respiration
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Decomposition
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Transpiration
A
Correct answer
Explanation
Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen. During photosynthesis, plants absorb carbon dioxide from the atmosphere and release oxygen. This process helps to reduce the amount of carbon dioxide in the atmosphere, which helps to mitigate climate change.
What is the term for the process by which forests release oxygen into the atmosphere?
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Photosynthesis
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Respiration
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Decomposition
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Transpiration
A
Correct answer
Explanation
Photosynthesis is the process by which plants use sunlight to convert carbon dioxide and water into glucose and oxygen. During photosynthesis, plants absorb carbon dioxide from the atmosphere and release oxygen. This process helps to increase the amount of oxygen in the atmosphere, which is vital for life on Earth.
What is the term for the process of reusing or recycling materials in manufacturing?
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Material recovery
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Material recycling
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Material reuse
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All of the above
D
Correct answer
Explanation
Material recovery, recycling, and reuse are all part of sustainable manufacturing practices.
What is the term for the process of reducing the amount of waste generated in a manufacturing process?
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Waste minimization
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Waste reduction
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Waste elimination
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All of the above
D
Correct answer
Explanation
Waste minimization, reduction, and elimination are all strategies for reducing waste in manufacturing.
What is the term used to describe the practice of reducing food waste?
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Food waste reduction
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Composting
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Food rescue
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All of the above
D
Correct answer
Explanation
All of the above are terms used to describe the practice of reducing food waste. Food waste reduction is the general term for reducing the amount of food that is wasted. Composting is the process of converting food scraps into a nutrient-rich soil amendment. Food rescue is the process of collecting and distributing food that would otherwise be wasted.
What is the term used to describe the process of bringing a spacecraft back to Earth from orbit?
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Re-entry
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De-orbit burn
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Atmospheric entry
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Landing
A
Correct answer
Explanation
Re-entry refers to the process of a spacecraft returning to Earth's atmosphere from orbit, involving a controlled descent and deceleration.