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

Multiple choice

What is the name of the process in which a substance loses electrons?

  1. Oxidation

  2. Reduction

  3. Neutralization

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

Oxidation is the process in which a substance loses electrons, resulting in an increase in its oxidation state.

Multiple choice

What is the term for the practice of reducing the amount of waste produced by an event or activity?

  1. Waste reduction

  2. Waste minimization

  3. Zero waste

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

Waste reduction is the practice of reducing the amount of waste produced by an event or activity.

Multiple choice

What is the term for the practice of reducing the amount of waste produced by an event or activity?

  1. Waste reduction

  2. Waste minimization

  3. Zero waste

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

Waste reduction is the practice of reducing the amount of waste produced by an event or activity.

Multiple choice

Which chemical is commonly used in chemical recycling of paper and cardboard?

  1. Sodium hydroxide

  2. Hydrochloric acid

  3. Sulfuric acid

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

Sodium hydroxide is often used in chemical recycling of paper and cardboard to dissolve lignin and other non-cellulosic materials, leaving behind cellulose fibers that can be used to produce new paper.

Multiple choice

What is the term used for the process of removing contaminants from recyclable paper and cardboard?

  1. Sorting

  2. Deinking

  3. Pulping

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

Sorting is the process of removing contaminants such as plastics, metals, and non-recyclable paper grades from recyclable paper and cardboard to ensure the quality of the recycled materials.

Multiple choice

What is the term used to describe the process of intentionally setting fires in a controlled manner?

  1. Fire suppression

  2. Fire management

  3. Controlled burning

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

Controlled burning is the process of intentionally setting fires in a controlled manner, typically to reduce fuel loads and prevent larger, more destructive wildfires.

Multiple choice

What is the term used to describe the process of creating a fire break to stop the spread of a fire?

  1. Fire suppression

  2. Fire management

  3. Controlled burning

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

Backfiring is the process of creating a fire break to stop the spread of a fire by intentionally setting a fire in front of the main fire front.

Multiple choice

What is the term used to describe the process of removing excess nutrients, particularly nitrogen and phosphorus, from water bodies?

  1. Bioremediation

  2. Phytoremediation

  3. Eutrophication

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

Denitrification is the process by which certain bacteria convert nitrates into nitrogen gas, removing excess nitrogen from water bodies and reducing eutrophication.

Multiple choice

What is the term used for the process of turning clothes into organic matter through biological decomposition?

  1. Upcycling

  2. Downcycling

  3. Recycling

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

Composting involves turning clothes into organic matter through biological decomposition, which can then be used as fertilizer.

Multiple choice

What is the term used to describe the process by which a nuclear reactor is shut down and decommissioned?

  1. Nuclear Decommissioning

  2. Nuclear Shutdown

  3. Nuclear Retirement

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

Nuclear decommissioning is the process by which a nuclear reactor is shut down and decommissioned, involving the removal of radioactive materials and the dismantling of the reactor.

Multiple choice

What is the term used to describe the process of removing carbon dioxide from the atmosphere?

  1. Carbon capture and storage (CCS)

  2. Carbon capture and utilization (CCU)

  3. Carbon sequestration

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

Carbon capture and storage (CCS) refers to the process of capturing carbon dioxide from industrial sources or the atmosphere and storing it underground or in geological formations to prevent its release into the atmosphere.

Multiple choice

What is the term used to describe the process of removing pollutants from the air?

  1. Air pollution control

  2. Air purification

  3. Air filtration

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

Air pollution control is the term used to describe the process of removing pollutants from the air. This can be done through a variety of methods, including air filtration, air scrubbing, and catalytic converters.

Multiple choice

What is the term used to describe the process of reducing the amount of pollutants emitted by an industrial facility?

  1. Pollution prevention

  2. Pollution control

  3. Pollution reduction

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

Pollution prevention is the term used to describe the process of reducing the amount of pollutants emitted by an industrial facility. This can be done through a variety of methods, such as using cleaner production technologies, improving energy efficiency, and reducing waste.

Multiple choice

What is the term used to describe the process of converting waste materials into usable energy?

  1. Recycling

  2. Composting

  3. Incineration

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

Waste-to-Energy is the process of converting waste materials into usable energy, such as electricity or heat.

Multiple choice

What is the process of converting waste into usable materials or energy called?

  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 converting waste materials into new materials and objects, reducing the amount of waste that is disposed of in landfills or incinerators.