Environmental Studies ยท General Awareness

Waste Management and Pollution

2,230 Questions

Waste management and pollution control address waste-to-energy technologies, hazardous disposal, and organic recycling methods. The questions cover landfilling, bioremediation, and marine debris indicators. This topic holds significant weight in UPSC, State PSC, and SSC general studies and environmental exams.

Waste-to-energy technologiesHazardous waste disposalBiogas storage methodsOrganic waste compostingPlastic pollution

Waste Management and Pollution Questions

Multiple choice

a common characteristic of all hazardous waste land disposal sites is they

  1. are long-term storage sites

  2. make use of deep-well injection

  3. pose no threat to the environment

  4. are not regulated by state or federal laws
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Hazardous waste land disposal sites are designed as long-term storage facilities intended to isolate hazardous materials from the environment indefinitely.

Multiple choice

the main problem with so called biodegradable plastic is that

  1. only its organic portion actually decomposes

  2. animals often choke on the plastic litter that forms

  3. it releases toxic compounds as it breaks down

  4. it included a chemical made by a rare bacterium
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Many 'biodegradable' plastics are blends of plastic and organic materials; only the organic portion breaks down, leaving behind microplastics.

Multiple choice

The process of composting

  1. uses synthetic materials

  2. has little potential to conserve landfill space

  3. is always carried out in city run facilities

  4. could effectively handle a variety of waste
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Composting can handle a wide variety of organic waste, including food scraps and yard waste, which diverts significant volume from landfills.

Multiple choice

The methane found in landfills is a gas that

  1. is produced when wastes react with oxygen

  2. must be pumped to the surface in leachate pipes

  3. is a major contaminant of ground water

  4. may be captured and used to produce energy
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Methane is a combustible gas that can be captured from landfills and used as a fuel source for energy production.

Multiple choice

Some hazardous waste is disposed by deep-well injection. This procedure

  1. pollutes the wells near residents

  2. stores waste below the water table

  3. violates federal law

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Deep-well injection is designed to place hazardous waste into deep, isolated rock layers, specifically below the water table to prevent groundwater contamination.

Multiple choice

which of the following is Not considered hazardous waste

  1. dead batteries such as those used in flashlight

  2. rotting meat and other food waste

  3. metals such as lead and mercury

  4. Both 1 and 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Hazardous waste is defined by chemical or physical danger. Rotting food is organic waste, which is biodegradable and not classified as hazardous.

Multiple choice

which of the following produces the most solid waste.

  1. manufacturing

  2. plastic packaging

  3. agriculture

  4. nuclear power plants
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Manufacturing processes generate the largest volume of solid waste compared to the other options listed. While agriculture produces significant waste, it is often organic and managed on-site, whereas manufacturing waste is a major contributor to industrial solid waste streams.

Multiple choice

Which of the following statements does not describe a problem associated with modern landfills?

  1. Chemical leaking out may pollute groundwater

  2. Materials buried in landfills decompose in three years.

  3. Explosive gases can be produced by landfills

  4. All of the above
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The statement that materials decompose in three years is false, as most items in modern, lined landfills take decades or even centuries to decompose due to the lack of oxygen and moisture. The other options describe legitimate environmental risks associated with landfills.

Multiple choice

To help you tidy up, have 3 piles for:

  1. Recycle, reuse, realize.

  2. Keep, give away, throw away.

  3. Keep, forget, remember.

  4. Recycle & keep.
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A common organizational method for decluttering is to sort items into three categories: things to keep, things to give away, and things to throw away.

Multiple choice geography understanding development: perspectives, measurement and sustainability introduction to natural resources (eco) basic problems of an economy resources - types and conservation

Methane is generated from ____________.

  1. Cow manure

  2. Scrap lumber

  3. Forest debris

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

An important source of methane emissions is from enteric fermentation in farm animals. This creates 27% of human methane emissions. Animals like cows, sheep and goats are examples of ruminant animals. During their normal digestion process they create large amounts of methane. Enteric fermentation occurs because of microorganisms in the stomach of these animals. This creates methane as a by-product that is either exhaled by the animal or released via flatus.

Because humans raise these animals for food, their emissions are human-related. This is why the meat that we eat everyday has a huge impact on total methane emissions. Livestock farming creates 90 million tonnes of methane per year.

Multiple choice general knowledge impact of technology on livelihoods animal husbandry and fishery cattle farming agriculture sector

Composting is one of the oldest forms of disposal of waste. It is the natural process of decomposition of organic waste that yields manure or compost. Which one of the following is added to the compost to get better results?

  1. Ants

  2. Bugs

  3. Snakes

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

Worms, particularly red wigglers, are commonly added to compost bins to accelerate the decomposition process, a practice known as vermicomposting. They break down organic matter into nutrient-rich castings.

Multiple choice

Which type of landfill is designed to minimize the generation of leachate?

  1. Dry tomb landfill

  2. Wet tomb landfill

  3. Bioreactor landfill

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

Dry tomb landfills are designed to minimize the generation of leachate by using a thick layer of compacted clay or other impermeable material to prevent the infiltration of water into the waste.

Multiple choice

What is the function of a leachate collection system in a landfill?

  1. To collect and treat leachate before it contaminates groundwater

  2. To recirculate leachate back into the landfill

  3. To generate electricity from leachate

  4. To provide a habitat for microorganisms
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The function of a leachate collection system is to collect and treat leachate before it can contaminate groundwater or surface water.

Multiple choice

What is the purpose of a gas collection and control system in a landfill?

  1. To collect and treat landfill gas before it is released into the atmosphere

  2. To generate electricity from landfill gas

  3. To provide a habitat for microorganisms

  4. To prevent the migration of landfill gas
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

The purpose of a gas collection and control system is to collect and treat landfill gas before it is released into the atmosphere, thereby reducing the emission of greenhouse gases and other air pollutants.

Multiple choice

Which type of landfill is designed to accelerate the decomposition of organic waste?

  1. Dry tomb landfill

  2. Wet tomb landfill

  3. Bioreactor landfill

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

Bioreactor landfills are designed to accelerate the decomposition of organic waste by adding moisture and nutrients to the waste, thereby creating a more favorable environment for microorganisms.