Environmental Studies · General Awareness

Pollution and Human Impact

2,864 Questions

Pollution involves the introduction of contaminants into natural environments, causing severe human impact. This hub focuses on water pollution, thermal pollution, soil contamination, and diseases like Minamata. It is a highly relevant topic for environmental studies in UPSC exams.

Water pollution sourcesOcean pollutantsHeavy metal contaminationSoil erosion impactsThermal pollution causes

Pollution and Human Impact Questions

Multiple choice

Consider the following statements:

  1. A spill or ongoing release of chemical or radionuclide contaminants soil and can contaminate the aquifer below, defined as a toxin plume.
  2. Plumes are used to locate map and measure water pollution within the aquifer's total body of water.

Which of the above statements is/are correct?

  1. Only 1

  2. Only 2

  3. Both 1 and 2

  4. Neither 1 nor 2
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation
  1. A spill or ongoing releases of chemical or radionuclide contaminants into soil (located away from a surface water body) may not create point source or non-point source pollution, but can contaminate the aquifer below, defined as a toxin plume. A radionuclide is an atom with an unstable nucleus, characterized by excess energy available to be imparted either to a newly created radiation particle within the nucleus or via internal conversion.
    1. Pollutants released to the ground can work their way down into the groundwater. The resulting body of polluted water within an aquifer is called a plume, with its migrating edges called plume fronts. Plumes are used to locate, map, and measure water pollution within the aquifer's total body of water, and plume fronts to determine directions and speed of the contamination's spreading in it.
Multiple choice

Which of the following does not contribute to environmental degradation?

  1. Pollutants

  2. Pesticides

  3. Poisonous chemicals

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

Plants are essential for environmental health - they produce oxygen, prevent soil erosion, and support ecosystems. Pollutants, pesticides, and poisonous chemicals harm the environment, while plants actively protect it.

Multiple choice

Which of these is the most important cause of pollution of surface and ground water in India?

  1. Untreated sewage

  2. Dumping partially cremated bodies

  3. Open defecation

  4. Communal violence related to distribution of water

  5. Floods
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

A 2007 study finds that discharge of untreated sewage is single most important cause for pollution of surface and ground water in India. There is a large gap between generation and treatment of domestic waste water in India. The problem is not only that India lacks sufficient treatment capacity but also that the sewage treatment plants that exist do not operate and are not maintained.

Multiple choice

Mile Island and Chernobyl disasters are environmental disasters associated with the accidental leakage of radioactive waste. In India, Bhopal gas tragedy, an environmental disaster, is associated with the leakage of

  1. nitrous oxide (NO2)

  2. chlorofluorocarbon (CFC)

  3. carbon dioxide (CO2)

  4. methyl isocyanate (MIC)

  5. hydrogen cyanide (HCN)
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Bhopal gas tragedy, an environmental disaster, is associated with the leakage of methyl isocyanate (MIC).

Multiple choice

Burning of fossil fuels leads to ____________.

  1. water pollution

  2. air pollution

  3. soil pollution

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

Burning fossil fuels releases carbon dioxide, carbon monoxide, nitrogen oxides, sulfur dioxide, and particulate matter into the atmosphere. These emissions contribute significantly to air pollution, causing smog, acid rain, and health problems. They do not directly cause water, soil, or sound pollution.

Multiple choice

Read the given passage and fill blank (i).

Directions: Complete this passage by selecting the most suitable option for the corresponding gap.

Pollution is one of the major ______ (i) ______ to the environment.  There are many types of pollution like air pollution, water pollution, soil pollution, noise pollution.  We must ____ (ii) ____ towards reducing the pollution.  There are many ways to do this. For example, one can use vehicles and automobiles _____ (iii) _____ on eco-friendly fuels.  One can also ____ (iv) _____ the use of polythene bags.  One can even use natural manure in place of chemical fertilisers for the crops.

  1. sources

  2. threats

  3. symptoms

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

The sentence describes pollution as something harmful to the environment. 'Threats' fits this context perfectly as pollution poses dangers. 'Sources' would refer to where pollution comes from, not its effect. 'Symptoms' and 'factors' don't convey the sense of danger.

Multiple choice

Effluents are ___________.

  1. dirt of city

  2. dirt of a household

  3. dirt of a locality

  4. liquid waste flowing out of a factory or a power plant

  5. solid waste disposed of a factory or a power plant
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Effluents are liquid waste flowing out of a factory or a power plant.

Multiple choice

Directions: Fill in the numbered blank (i) with the best option from those given.

Directions: Fill in the numbered blank with the best option from those given.

Pollution is one of the major ______ (i) ______ to the ______ (ii) ______.  There are many types of pollution like air pollution, water pollution, soil pollution, noise pollution.  We must ____ (iii) ____ towards reducing the pollution.  There are many ways to do this. For example, one can use vehicles and automobiles _____ (iv) _____ on eco-friendly fuels.  One can also ____ (v) _____ the use of polythene bags.  One can even use natural manure in place of chemical fertilisers for the crops.

  1. diseases

  2. threats

  3. symptoms

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

Pollution is described as a threat to the environment. While pollution can cause diseases and might be considered a factor, "threats" best captures the danger and harm posed. The sentence structure "major threats to" is the standard collocation. "Symptoms" would describe effects of pollution, not pollution itself.