Environmental Studies ยท Chemistry
Environmental and Chemical Processes
2,261 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 for the process by which soil becomes contaminated with pollutants?
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Soil contamination
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Soil pollution
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Soil degradation
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All of the above
D
Correct answer
Explanation
Soil contamination, soil pollution, and soil degradation all refer to the process by which soil becomes contaminated with pollutants. Soil contamination can occur through a variety of sources, including industrial activities, agricultural practices, and improper waste disposal.
What is the term for the process by which pollutants are transported through the environment?
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Environmental transport
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Environmental fate
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Environmental distribution
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All of the above
D
Correct answer
Explanation
Environmental transport, environmental fate, and environmental distribution all refer to the process by which pollutants are transported through the environment. Pollutants can be transported through the air, water, or soil. The fate of a pollutant depends on its chemical properties, the environmental conditions, and the presence of other pollutants.
What is the term for the process by which pollutants are transformed into less harmful or non-toxic substances?
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Degradation
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Mineralization
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Transformation
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All of the above
D
Correct answer
Explanation
Degradation, mineralization, and transformation all refer to the process by which pollutants are transformed into less harmful or non-toxic substances. Degradation involves the breakdown of pollutants into smaller molecules. Mineralization involves the conversion of organic pollutants into inorganic compounds. Transformation involves the conversion of pollutants into different chemical forms.
What is the term for the process by which pollutants are removed from the environment by natural processes?
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Natural attenuation
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Biodegradation
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Phytoremediation
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All of the above
D
Correct answer
Explanation
Natural attenuation, biodegradation, and phytoremediation all refer to the process by which pollutants are removed from the environment by natural processes. Natural attenuation involves the breakdown of pollutants by natural chemical and biological processes. Biodegradation involves the breakdown of pollutants by microorganisms. Phytoremediation involves the removal of pollutants from the environment by plants.
What is the term for the process by which pollutants are released into the environment?
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Emission
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Discharge
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Release
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All of the above
D
Correct answer
Explanation
Emission, discharge, and release all refer to the process by which pollutants are released into the environment. Pollutants can be emitted into the air, discharged into water, or released onto land.
What is the process of removing excess salts from saline soils called?
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Desalination
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Leaching
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Fertilization
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Crop Rotation
B
Correct answer
Explanation
Leaching is the process of removing excess salts from saline soils by applying large amounts of water to dissolve and drain the salts below the root zone.
What is the process by which a substance gains electrons called?
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Oxidation
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Reduction
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Electrolysis
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Neutralization
B
Correct answer
Explanation
Reduction is the process by which a substance gains electrons, resulting in a decrease in its oxidation state.
What is the process of converting organic matter into a nutrient-rich soil amendment called?
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Incineration
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Landfilling
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Composting
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Pyrolysis
C
Correct answer
Explanation
Composting is the natural process of breaking down organic matter by microorganisms, resulting in a nutrient-rich soil amendment.
What is the process of converting waste materials into new materials and objects called?
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Incineration
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Landfilling
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Composting
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Recycling
D
Correct answer
Explanation
Recycling is the process of converting waste materials into new materials and objects, reducing the need for raw materials and conserving natural resources.
What is the term for the process of separating different materials from a waste stream?
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Incineration
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Landfilling
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Composting
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Sorting
D
Correct answer
Explanation
Sorting is the process of separating different materials from a waste stream, such as recyclables, compostable materials, and non-recyclable waste.
What is the term for the process of turning organic waste into biogas?
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Incineration
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Anaerobic digestion
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Composting
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Pyrolysis
B
Correct answer
Explanation
Anaerobic digestion is the process of turning organic waste into biogas, a renewable energy source, in the absence of oxygen.
What is the process of converting organic waste into a solid fuel called?
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Incineration
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Pyrolysis
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Composting
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Anaerobic digestion
B
Correct answer
Explanation
Pyrolysis is the process of converting organic waste into a solid fuel through a thermochemical process in the absence of oxygen.
What is the term for the process of turning organic waste into a liquid fertilizer?
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Incineration
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Pyrolysis
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Composting
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Vermicomposting
D
Correct answer
Explanation
Vermicomposting is the process of turning organic waste into a liquid fertilizer using worms.
The process of converting waste materials into reusable materials is known as:
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Landfilling
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Incineration
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Recycling
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Composting
C
Correct answer
Explanation
Recycling involves the conversion of waste materials into reusable materials, reducing the need for raw materials and conserving natural resources.
The process of breaking down organic matter into a nutrient-rich soil amendment is known as:
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Landfilling
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Incineration
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Recycling
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Composting
D
Correct answer
Explanation
Composting involves the decomposition of organic matter by microorganisms, resulting in a nutrient-rich soil amendment.