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

Multiple choice

What is the term used to describe the process of settling out suspended solids from water?

  1. Filtration

  2. Sedimentation

  3. Coagulation

  4. Flocculation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Sedimentation is the process by which suspended solids settle out of water due to gravity, allowing them to be separated from the water.

Multiple choice

What is the process of using plants to remove contaminants from the soil called?

  1. Phytoremediation

  2. Bioremediation

  3. Phytoextraction

  4. Rhizofiltration
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Phytoremediation is the process of using plants to remove contaminants from the soil. Plants can absorb, accumulate, and degrade contaminants through various mechanisms.

Multiple choice

What is the term used to describe the process of preventing soil contamination before it occurs?

  1. Soil prevention

  2. Soil protection

  3. Soil conservation

  4. Soil management
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Soil prevention refers to measures taken to prevent soil contamination from occurring in the first place.

Multiple choice

What is the process by which microorganisms break down contaminants into harmless substances called?

  1. Biodegradation

  2. Biotransformation

  3. Mineralization

  4. Humification
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodegradation is the process by which microorganisms break down contaminants into harmless substances. Biotransformation is the process by which microorganisms convert one type of contaminant into another. Mineralization is the process by which microorganisms convert organic matter into inorganic matter. Humification is the process by which organic matter is converted into humus.

Multiple choice

Which of the following is an example of a bioremediation technology that is used to remove petroleum hydrocarbons from soil?

  1. Bioventing

  2. Landfarming

  3. Bioaugmentation

  4. Composting
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bioventing is a bioremediation technology that uses air to stimulate the growth of microorganisms that can degrade petroleum hydrocarbons. Air is injected into the soil, which provides oxygen for the microorganisms and helps to volatilize the petroleum hydrocarbons. The volatilized petroleum hydrocarbons are then removed from the soil by a vapor extraction system.

Multiple choice

Which of the following is an example of a bioremediation technology that is used to remove chlorinated solvents from soil?

  1. Bioaugmentation

  2. Composting

  3. Phytoremediation

  4. In situ chemical oxidation
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Bioaugmentation is a bioremediation technology that involves adding microorganisms to the soil that are able to degrade chlorinated solvents. The microorganisms use the chlorinated solvents as a food source and break them down into harmless substances.

Multiple choice

Which of the following is an example of a bioremediation technology that is used to remove dioxins from soil?

  1. Phytoremediation

  2. In situ chemical oxidation

  3. Thermal desorption

  4. Solidification/stabilization
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Solidification/stabilization is a bioremediation technology that involves mixing the contaminated soil with a binder, such as cement or asphalt, to immobilize the contaminants. The binder prevents the contaminants from leaching out of the soil and contaminating groundwater or surface water.

Multiple choice

What is the term used to describe the process of reducing the amount of waste produced?

  1. Mitigation

  2. Adaptation

  3. Reforestation

  4. Waste reduction
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Waste reduction involves taking actions to reduce the amount of waste produced.

Multiple choice

What is the term for the process of recovering materials from waste and reusing them in new products?

  1. Recycling

  2. Composting

  3. Incineration

  4. Landfilling
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Recycling is the process of recovering materials from waste and reusing them in new products, reducing the need for raw materials and minimizing waste.

Multiple choice

What is the term for the process of reusing water after it has been used once?

  1. Water recycling

  2. Water conservation

  3. Water purification

  4. Water desalination
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water recycling refers to the process of reusing water after it has been used once, typically for non-potable purposes such as irrigation or industrial processes.

Multiple choice

What is the term used to describe the process by which oil becomes weathered and broken down in the marine environment?

  1. Biodegradation

  2. Photooxidation

  3. Evaporation

  4. Dispersion
Reveal answer Fill a bubble to check yourself
Correct answer
Explanation

Weathering is the term used to describe the process by which oil becomes weathered and broken down in the marine environment. It includes processes such as evaporation, photooxidation, biodegradation, and dispersion.

Multiple choice

What is the term used to describe the process by which oil droplets become smaller and dispersed in the water column?

  1. Emulsification

  2. Dispersion

  3. Photooxidation

  4. Evaporation
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Dispersion is the term used to describe the process by which oil droplets become smaller and dispersed in the water column. This can occur naturally through wave action and turbulence, or it can be enhanced through the use of chemical dispersants.

Multiple choice

What is the term used to describe the process by which oil is broken down by microorganisms?

  1. Biodegradation

  2. Photooxidation

  3. Evaporation

  4. Dispersion
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Biodegradation is the term used to describe the process by which oil is broken down by microorganisms. This process can occur naturally in the marine environment, but it can be enhanced through the use of bioremediation techniques.

Multiple choice

What is the term used to describe the process by which oil is removed from the marine environment through evaporation?

  1. Biodegradation

  2. Photooxidation

  3. Evaporation

  4. Dispersion
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Evaporation is the term used to describe the process by which oil is removed from the marine environment through evaporation. This process occurs when oil droplets become smaller and lighter, allowing them to rise to the surface of the water and evaporate into the atmosphere.

Multiple choice

In Neal Shusterman's "Unwind", what is the process of harvesting organs from living teenagers called?

  1. Unwinding

  2. Harvesting

  3. Extraction

  4. Disassembly
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Unwinding is a legal process in the dystopian world where teenagers can be harvested for their organs before reaching adulthood.