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 vehicles and contributes to air pollution?

4 Which measure helps control air pollution from vehicles?

5 Which activity can cause water pollution?

6 What is an effective way to 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 possible effect of noise pollution?

10 Which action helps control noise pollution?

11 Radiation pollution may result from the improper handling of what?

12 Which is an example of an emerging pollutant?

13 Fireworks mainly increase which types of pollution during festivals?

14 What is global warming?

15 Which is a possible effect of climate change?

16 The ozone layer protects living organisms from which harmful radiation?

17 Acid rain is mainly caused by emissions of which gases?

18 How can air pollution affect human health?

19 Which method is an important part of solid waste management?

20 Which measure helps control industrial waste?

21 A factory releases heated water into a nearby river without chemical additives. Which type of pollution is most directly involved?

22 A city wants to reduce particulate matter from diesel buses. Which measure would be most effective at the source?

23 After untreated sewage enters a lake, algal growth increases rapidly and fish begin to die. What is the most likely explanation?

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

25 A hospital is located beside a busy highway. Which intervention would best reduce traffic noise reaching the hospital?

26 Workers handling radioactive materials need to reduce their exposure. Which combination follows the basic protection principle?

27 A wastewater treatment plant removes suspended solids but releases traces of medicines into a river. Why are these substances considered emerging pollutants?

28 Air quality becomes poor for several hours after a festival with extensive fireworks. Which combination best explains this result?

29 Why does replacing a coal-fired power plant with a solar power plant generally help reduce global warming?

30 A coastal farming community experiences more frequent flooding and saltwater intrusion. Which adaptation measure is most suitable?

31 Why can the release of chlorofluorocarbons lead to increased ultraviolet radiation at Earth's surface?

32 A region downwind of coal-burning industries reports acidified lakes and damaged stone buildings. Which pollutants are mainly responsible?

33 An area near a polluted river reports increased illness and reduced crop yields. Which pathway could link the pollution to both effects?

34 In the Minamata disease case, people developed neurological symptoms after consuming contaminated fish. Which pollutant was chiefly responsible?

35 A municipality separates kitchen waste from plastics and metals at the household level. What is the main advantage of this practice?

36 An industrial facility produces wastewater containing heavy metals. Which treatment approach is most appropriate before discharge?

37 During a temperature inversion, pollutants remain concentrated near the ground. Which response would reduce short-term exposure most effectively?

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

39 A contaminated industrial site is planned for vegetable cultivation. Which action should occur before planting food crops?

40 A city landfill produces methane from decomposing organic waste. Which strategy can both reduce methane release and recover useful energy?

41 A river receives a biodegradable organic load, and its dissolved oxygen initially falls but later recovers downstream. Which classification best describes the pollution process?

42 A city reduces sulfur dioxide emissions substantially, yet wintertime fine-particle concentrations remain high because of nitrate and organic aerosol formation. Which control strategy is most appropriate?

43 A wastewater plant discharges effluent with low biochemical oxygen demand but high nitrate concentration into a shallow lake. Which outcome is most likely if phosphorus is also available?

44 A contaminated agricultural field contains a persistent hydrophobic pesticide strongly bound to organic matter. Which intervention most directly reduces its transfer to crops?

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

46 A radioactive contaminant has a physical half-life of days and a biological half-life of days. What is the approximate effective half-life in the exposed organism?

47 A municipal treatment plant removes suspended solids efficiently but releases antibiotic-resistant bacteria and pharmaceutical residues. Which upgrade most directly addresses both concerns?

48 After a large fireworks event, monitoring detects sharp increases in PM, perchlorate, and metal-containing particles. Which exposure pattern is most likely?

49 Which observation most strongly distinguishes enhanced greenhouse warming from increased solar output as the dominant recent forcing?

50 A farming region experiences warmer nights, irregular monsoon timing, and more intense short-duration rainfall, while annual precipitation remains nearly unchanged. Which adaptation is most appropriate?

51 Why can chlorine released from chlorofluorocarbons destroy many ozone molecules without being consumed stoichiometrically?

52 A lake has low alkalinity and receives deposition containing sulfuric and nitric acids. Which characteristic makes it especially vulnerable to acidification?

53 An industrial corridor reports elevated ozone, heat waves, and declining crop yields. Which combined mechanism best explains the agricultural impact?

54 In the Minamata disease case, which pathway best explains severe neurological effects in people consuming contaminated seafood?

55 A city collects mixed waste, but its landfill produces leachate with high organic load and methane. Which redesign best follows the waste hierarchy?

56 An industry claims zero liquid discharge, but concentrated brine is sent to an unlined evaporation pond. Which assessment is most accurate?

57 A coal-fired plant installs an electrostatic precipitator but leaves sulfur dioxide controls unchanged. Which pollutant reduction is most directly expected?

58 A drinking-water source contains nitrate from agricultural runoff, but turbidity is low and pathogen counts are acceptable. Which treatment is most suitable for nitrate removal?

59 A city must choose between an incinerator with advanced emission controls and a poorly segregated landfill. Which decision criterion is most defensible?

60 A pesticide is detected at increasing concentrations from water to plankton to fish to fish-eating birds. Which interpretation is correct?