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Environmental Pollution

Learn about different types of environmental pollution including water pollution, atmospheric changes, and transboundary pollutants

5 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What happens to the BOD value when huge amount of sewage is dumped into the river?

  1. It increases
  2. Slightly decreases
  3. Remains the same
  4. Decreases enormously
  5. Cannot be determined
Question 2 Multiple Choice (Single Answer)

The water from water bodies or pipes sometimes smells like rotten eggs. Which of these gases may be reason for the foul smell?

  1. Carbon dioxide
  2. Carbon monoxide
  3. Nitrogen dioxide
  4. Nitrogen
  5. Hydrogen sulphide
Question 3 Multiple Choice (Single Answer)

Which of the following is the result of eutrophication in a lake or pond?

  1. Water absorbs less light, and activate the certain aerobic bacteria.
  2. The level of nitrate and phosphate in the ecosystem increases.
  3. Depletion of oxygen level makes life in water impossible for fish and other living organisms thereby causing death.
  4. Aerobic bacteria depletes the oxygen level, thus only anaerobic bacteria can survive.
  5. Eutrophication in turn favours algal growth and cause algal bloom.
Question 4 Multiple Choice (Single Answer)

The ozone layer, which has been degraded by gases released by human activities, is found in which part of Earth's atmosphere?

  1. Troposphere
  2. Ionosphere
  3. Stratosphere
  4. Mesosphere
  5. Lithosphere
Question 5 Multiple Choice (Single Answer)

Which of the following is not an example of transboundary pollutants?

  1. Radioactive isotopes
  2. Biodegradable waste
  3. Acid rain
  4. Explosive chemical leakage
  5. E-waste
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