Environmental Studies · 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
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is always flowing
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is exposed to the atmosphere
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contains salts of calcium and magnesium
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contains sodium chloride
C
Correct answer
Explanation
River water is harder than rain water because it flows over rocks and soil, dissolving minerals like calcium and magnesium salts along the way. Rain water is essentially distilled water before it hits the ground.
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excretion
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nutrition
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transportation
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filtration
A
Correct answer
Explanation
Excretion is the biological process by which an organism eliminates metabolic waste products from its body.
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Vermicomposting
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Aerobic composting
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Windrow composting
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Anaerobic composting
D
Correct answer
Explanation
This is composting without air. If you just stack your debris in a pile, it will generally compact to the point, where there is no available air, for beneficial organisms to live.
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aerobic composting
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anaerobic composting
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windrow composting
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vermicomposting
D
Correct answer
Explanation
This is most beneficial for composting food waste. Apart from red worms, this includes, composting with bacteria, fungi, insects, and other bugs.
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Decomposition
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Vermicomposting
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Manuring
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Hybridization
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Refining
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Carbonization
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Destructive distillation
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decarbonisation
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Circulation
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Transpiration
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Reproduction
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Excretion
D
Correct answer
Explanation
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| System |
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Function |
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Digestive system |
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Taking in complex food and using it in simple form by body |
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Respiratory system |
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Inhaling and exhaling air and utilizing it to meet energy needs |
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Circulatory system |
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Movement of blood to each and every part of body to provide nutrition |
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Excretory system |
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Removal of water materials from the body |
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So it is the respiratory system involved in the inhalation and exhalation of air. Whereas transpiration is loss of water from leaf surface and reproduction is a mode of giving birth to similar ones.
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Evaporation
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Condensation
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Distillation
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Decantation
A
Correct answer
Explanation
Water turns into vapors by absorbing heat from the atmosphere. The process is known as evaporation.
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Conditions are aerobic and temperature 40 deg C
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Conditions are anaerobic and temperature 40 deg C
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Conditions are aerobic and sewage is supplied
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Conditions are anaerobic and sewage is supplies
B
Correct answer
Explanation
Biogas production is an anaerobic process that is most efficient at thermophilic temperatures, typically around 40 degrees Celsius.
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decomposition
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oxidation
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substitution
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reduction
B
Correct answer
Explanation
Chlorine acts as a bleaching agent by releasing oxygen or by reacting with water to form hypochlorous acid, which then oxidizes the colored pigments in materials to make them colorless.
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exhaustion
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carbonization
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compression
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extraction
B
Correct answer
Explanation
The process of formation of coal from dead vegetation is called carbonization.
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Fossilisation
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Carbonisation
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Deposition
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Fermentation
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Sublimation
B
Correct answer
Explanation
Carbonisation is the process of conversion of dead vegetation into coal.
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nitrification
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denitrification
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nitrogen fixation
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ammonification
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-
B
Correct answer
Explanation
Denitrification is a microbially facilitated process of nitrate reduction (performed by a large group of heterotrophic facultative anaerobic bacteria) that may ultimately produce molecular nitrogen through a series of intermediate gaseous nitrogen oxide products.
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Volcanic eruption
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Combustion
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Photosynthesis
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None of these
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Respiration
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Transpiration
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Carburization
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Photosynthesis