Q. Which of the following is NOT a sign of organic water pollution? BOD pH Salinity Eutrophication Answer: BOD
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Q. Which of the following is the most important cause of biomagnification? Eutrophication Detergent pollution Pesticide pollution Industrial pollution Answer: Pesticide pollution
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Q. Which of the following is the primary cause of algal bloom? Presence of heavy metals Contamination by pathogens Eutrophication Soil erosion Answer: Eutrophication
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Q. The term “eutrophication caused by sewage pollution” refers to the process of Nutrient enrichment of freshwater bodies Nutrient depletion of freshwater bodies Toxic chemical accumulation in freshwater bodies Heavy metal accumulation in freshwater bodies Answer: Nutrient enrichment of freshwater bodies
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Q. Except for the one, all of the following are well-known oil spills. Deepwater Horizon, 2010 Love canal disaster Exxon Valdes, 1991 Gulf War, 1991 Answer: Love canal disaster
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Q. Which of the following is the world’s common cause of mortality & disease? Water pollution Radioactive pollution Air pollution Soil pollution Answer: Water pollution
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Q. What are the health effects of drinking water with too much fluoride? Fluorosis Toothaches Lung disease Intestinal infection Answer: Fluorosis
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Q. Non-flammable compounds called chlorofluorocarbons are commonly used in? Perfumes Refrigerators Air conditioners All of the above Answer: All of the above
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Q. Which of the following factors is the primary cause of water pollution? Afforestation Oil refineries Paper factories Both b and c Answer: Both b and c
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Q. Which of the following salts is the most common source of water hardness? Magnesium sulphate Magnesium bicarbonate Magnesium carbonate None of the above Answer: Magnesium carbonate
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