This quiz works best with JavaScript enabled. Home > Ugc Net > Paper 1 > Environment > Water Pollution – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Water Pollution Quiz 1 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In a river ecosystem, dissolved oxygen concentrations drop quickly downstream from a point-source input of organic matter into the river due to A) Increasing populations of mayfly and stonefly larvae. B) Increasing bacterial activity as organic matter decays. C) Decreasing bacterial activity as turbidity increases. D) Decreasing water temperature. Show Answer Correct Answer: B) Increasing bacterial activity as organic matter decays. 2. Point-source pollution and non point-source pollution differ in A) The number of sources from which the pollution is discharged. B) The kind of biological agents causing the pollution. C) Whether the source of pollution is agricultural or industrial. D) Whether the pollutants are chemical or physical agents. Show Answer Correct Answer: A) The number of sources from which the pollution is discharged. 3. A bacterium, virus or parasitic worm that causes disease. A) Aquifer. B) Nonpoint-source pollution. C) Pathogen. D) Biomagnification. Show Answer Correct Answer: C) Pathogen. 4. When water is warmed in a power plant and then releases the water into a river, what kind of pollution is this? A) Thermal. B) Biological. C) Chemical. D) Aquatic. Show Answer Correct Answer: A) Thermal. 5. What do scientists call plastics when they break down into tiny pieces? A) Microplastics. B) Macroplastics. C) Microtrash. D) Microparticles. Show Answer Correct Answer: A) Microplastics. 6. Which is NOT used in the cleanup of oil spills? A) Genetically engineered bacteria. B) Clumping agents applied to underwater plumes. C) Chemical dispersants. D) Large vacuums. E) Absorbent materials along the coast. Show Answer Correct Answer: B) Clumping agents applied to underwater plumes. 7. Which of the following affects how freshwater is used? A) GPA. B) Education. C) Age. D) Population size. Show Answer Correct Answer: D) Population size. 8. Growth of lichens on barren rocks is followed by the growth of A) Moss. B) Fern. C) Algae. D) None of above. Show Answer Correct Answer: A) Moss. 9. Liquids cannot pass through A) Permeable. B) Erosion. C) Nope. D) Impermeable. Show Answer Correct Answer: D) Impermeable. 10. Which of the following is a way to conserve water? A) Use cold water instead of hot water. B) Water the lawn each day. C) Fix a leaky tap. D) Don't shower. Show Answer Correct Answer: C) Fix a leaky tap. 11. A lake that stores water for human use is called a ..... A) Dam. B) Reservoir. C) Oxbow lake. D) Crater lake. Show Answer Correct Answer: B) Reservoir. 12. The wearing away of the earth's surface by water, wind or ice A) River basin. B) Erosion. C) Pollution. D) Ocean waves. Show Answer Correct Answer: B) Erosion. 13. A watershed ..... A) Is the land area that supplies water to a river system. B) Is a drainage basin. C) Can range in size from a few to millions of acres. D) All of the above. Show Answer Correct Answer: D) All of the above. 14. A diffuse areas such as and entire framing region, a suburban community with many lawns and septic systems or storm runoff from parking lots. A) Water pollution. B) Wastewater. C) Point source. D) Nonpoint source. Show Answer Correct Answer: D) Nonpoint source. 15. Microbiological pollution is when ..... occurs. A) Algae bloom. B) Salinity. C) Toxins. D) Salt bloom. Show Answer Correct Answer: A) Algae bloom. 16. Mandates the restoration and maintenance of the chemical, physical, and biological integrity of the nation's waters A) Safe Drinking Water Act. B) Clean Water Act. C) Comprehensive Environmental Response Compensation and Liability Act. D) Resource Conservation and Recovery Act. E) Toxic Substances Control Act. Show Answer Correct Answer: B) Clean Water Act. 17. What type of water pollution comes from multiple sources and is not easily identified? A) Chemical source pollution. B) Nonpoint source pollution. C) Point source pollution. D) Carbon source pollution. Show Answer Correct Answer: B) Nonpoint source pollution. 18. What is water pollution? (00:21) A) Water pollution is when the water is too cold. B) Water pollution is when harmful and toxic waste and chemicals enters water. C) Water pollution is when CO2 enters water. D) None of above. Show Answer Correct Answer: B) Water pollution is when harmful and toxic waste and chemicals enters water. 19. What is it called when contaminated water mixes with clean water? A) Nutrient Pollution. B) Surface Water Pollution. C) Groundwater Pollution. D) Oxygen Depleting. Show Answer Correct Answer: B) Surface Water Pollution. 20. Salt in the water A) Upwelling. B) Hydrothermal vents. C) Salinity. D) None of above. Show Answer Correct Answer: C) Salinity. 21. Too much of this can cause water to become polluted: A) Sediment. B) Medical. C) Dihydrogen monoxide. D) Food. Show Answer Correct Answer: A) Sediment. 22. The illegal dumping or littering of waste onto the land is called ..... pollution. A) Air. B) Land. C) Water. D) None of above. Show Answer Correct Answer: B) Land. 23. The largest component of municipal solid waste in the US is: A) Paper. B) Metal. C) Yard Trimmings. D) Plastic. Show Answer Correct Answer: A) Paper. 24. Although recognized by the Clean Water Act as a water quality issue that needs to be addressed, ..... is still a major issue and hard to regulate. A) Point source pollution. B) Non point source pollution. C) Pesticides. D) Wastewater. Show Answer Correct Answer: B) Non point source pollution. 25. Wetlands help to reduce A) Droughts. B) Flooding. C) Water pollution. D) All of these. Show Answer Correct Answer: B) Flooding. 26. Eutrophication causes A) The killing of fish. B) Production of excessive organic matter. C) Farming in Eurpoe. D) Water to get healthier. Show Answer Correct Answer: A) The killing of fish. 27. HOTS-How much water get polluted on a daily basis? A) 817 tons. B) 500 tons. C) 2 million tons. D) 1 million tons. Show Answer Correct Answer: C) 2 million tons. 28. What is natural pollution caused by? A) Humans. B) Fish. C) Microorganisms. D) Chemicals. Show Answer Correct Answer: C) Microorganisms. 29. What does the chloriform count measure? A) E. coli. B) Hardness of water. C) PH. D) None of above. Show Answer Correct Answer: A) E. coli. 30. Does polluted water breed mosquitoes? A) Yes. B) No. C) None. D) None of above. Show Answer Correct Answer: A) Yes. 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