Unit 4: Environmental pollution - Practice Quiz

1 What is environmental pollution?

2 Which of the following is a major type of environmental pollution?

3 Which gas is commonly released by burning fossil fuels?

4 Which device helps reduce smoke from industrial chimneys?

5 Which activity can cause water pollution?

6 Which method helps control water pollution?

7 Which substance can cause soil pollution when used excessively?

8 Which practice helps reduce soil pollution?

9 Which of the following is a source of noise pollution?

10 Which action can help control noise pollution?

11 Radiation pollution may result from the improper disposal of which material?

12 Which is an example of an emerging pollutant?

13 What type of pollution is especially increased by fireworks?

14 What is the main cause of the recent increase in global warming?

15 Climate change refers to:

16 Which chemicals are strongly associated with ozone layer depletion?

17 Acid rain is mainly caused by emissions of:

18 How can air pollution affect human health?

19 Which practice is part of the 3Rs of solid waste management?

20 What should industries do before releasing liquid waste?

21 A factory discharges untreated wastewater into a river, causing fish deaths and reducing water quality. Which classification best describes this pollution?

22 A city experiences frequent smog because nitrogen oxides and hydrocarbons react in strong sunlight. Which measure would most directly reduce this problem?

23 A lake receives excessive fertilizer runoff and develops algal blooms followed by fish deaths. Which process best explains the fish deaths?

24 A farmer repeatedly applies a persistent pesticide, and earthworm numbers decline over several years. Which control is most appropriate?

25 Residents living beside a major highway report sleep disturbance and elevated stress. Which intervention would most effectively reduce exposure at their homes?

26 Workers handling radioactive materials need to minimize their radiation dose. Which combination follows the principle of radiation protection?

27 Trace concentrations of antibiotics are detected in a wastewater treatment plant's outflow. Why are such substances considered emerging pollutants?

28 After a festival involving extensive fireworks, particulate matter and metal residues increase sharply in the air. Which measure would best reduce these effects?

29 If atmospheric carbon dioxide increases while other conditions remain similar, which change is most likely over the long term?

30 A coastal community faces more frequent flooding because sea level is rising and intense storms are becoming more common. Which response combines adaptation and mitigation?

31 Why does releasing chlorofluorocarbons threaten the stratospheric ozone layer?

32 A region downwind of coal-fired power plants observes acidic lakes and damaged limestone monuments. Which emission-control strategy would best address the cause?

33 A farming region experiences repeated heat waves and irregular rainfall. Which agricultural impact is most likely without adaptation?

34 In Minamata disease, people developed neurological symptoms after eating contaminated fish. Which pollutant pathway best matches this case?

35 A municipality wants to reduce the amount of waste sent to landfills. Which sequence best follows the waste-management hierarchy?

36 An industry generates wastewater containing heavy metals. Which treatment approach is most suitable before discharge?

37 A hospital records more asthma attacks on days with high fine particulate concentrations. Which control would target the most important exposure source in a traffic-dense area?

38 A town's drinking-water source is contaminated by sewage. Which treatment step is especially important for reducing disease-causing microorganisms?

39 A city replaces dark asphalt with reflective surfaces and expands tree cover. Which climate-related benefit is most immediate?

40 A city mixes food scraps, plastics, and electronic waste in one collection bin. Which change would most improve safe resource recovery?

41 A pesticide is applied at a concentration below its acute-toxicity threshold, yet repeated use causes persistent ecological damage. Which classification best captures this pollution mechanism?

42 A city reduces sulfur dioxide emissions substantially, but fine particulate matter remains high during winter inversions. Which control strategy is most directly targeted at the remaining dominant risk?

43 Why can reducing nitrogen oxide emissions from vehicles sometimes increase near-road ozone concentrations in a highly traffic-dense area?

44 A lake receives high nutrient loads, but algal biomass remains low because the water is deeply mixed and light penetration is poor. Which intervention is most likely to reduce future eutrophication risk?

45 A wastewater plant meets its biochemical oxygen demand limit but discharges effluent containing persistent pharmaceuticals. Which treatment upgrade is most appropriate?

46 A contaminated soil contains a hydrophobic pesticide strongly bound to organic matter. Which remediation approach is most likely to reduce immediate leaching while long-term treatment is planned?

47 Two industrial machines produce independent sound levels of dB and dB at a receptor. What approximate combined level should be expected?

48 A facility wants to reduce occupational exposure to a penetrating radiation source without changing the source activity. Which combination follows the most effective protection principles?

49 A wastewater treatment plant removes conventional organic matter but releases antibiotic residues that promote resistant bacteria downstream. Which monitoring design is most informative?

50 After a festival, short-term concentrations of fine particles and metal-rich aerosols rise sharply. Which combined measure would most effectively reduce both exposure and emissions?

51 A region's forest area expands, but its net greenhouse-gas emissions rise because newly planted trees replace older, rapidly growing stands and fossil-fuel use increases. Which conclusion is best supported?

52 A coastal city experiences more intense rainfall, sea-level rise, and increasing heat stress. Which adaptation portfolio best addresses the interacting risks?

53 Why did replacing chlorofluorocarbons with substances having little ozone-depleting potential not automatically eliminate all climate concerns?

54 A lake has high alkalinity and receives substantial sulfur deposition, yet its pH changes little. Which explanation is most plausible?

55 An agricultural region experiences ozone episodes during crop flowering, while irrigation water remains adequate. Which outcome is most likely if ozone injury is chronic?

56 In the Minamata disease case, which causal pathway best explains the severe neurological effects in human communities?

57 A municipality has high organic content in its mixed waste and frequent landfill methane emissions. Which redesign best follows the waste hierarchy and reduces climate impact?

58 An industrial estate discharges wastewater containing metals, solvents, and high organic loads. Which treatment sequence is most defensible before final discharge?

59 A city installs a waste-to-energy plant, but its feedstock contains excessive moisture and recyclable materials. Which policy change is most likely to improve environmental performance?

60 A pollutant concentration falls below a legal limit at a monitoring station, but residents near an intermittent discharge report acute symptoms. Which assessment is most appropriate?