Page 1 : livemcqs.com, , MCQ On Environmental Pollution, 1. Ozone depletion is caused due to increase in the level of, (a) Water vapour, (b) Oxygen, (c) Chlorofluorocarbon, (d) Carbon monoxide, Answer: Chlorofluorocarbon, 2. What type of chemical weathering is enhanced by acid rain?, (a) Hydrolysis, (b) Dissolution, (c) Oxidation, (d) None of the above, Answer: Hydrolysis, 3. What process causes the disintegration of rock at or near the earth's surface?, (a) Physical weathering, (b) Chemical weathering, (c) Erosion, (d) None of the above, Answer: Physical weathering, 4. Which of the following gas affects human health by reducing the blood's ability to carry oxygen to, different parts of the body?, (a) Carbon monoxide, (b)Carbon dioxide, (c) Sulphur dioxide, (d) Nitrous dioxide, Answer: Carbon monoxide, 5. Nitrogen oxide affects human health by__________, (a) Causing irritation to the eyes and skin, (b) Aggravating asthma problem, (c) Decreasing blood's ability to transport oxygen, (d) None of the above, Answer: Aggravating asthma problem, , livemcqs.com

Page 2 : livemcqs.com, 6. The air pollutants are mainly classified as____________, (a) Point source and non-point source, (b) Primary and secondary pollutants, (c) Natural or anthropogenic pollutants, (d) None of the above, Answer: Primary and secondary pollutants, 7. The best way to dispose plant waste is___________, (a) Burning, (b) Composting, (c) Dumping in a hilly area, (d) Incineration, Answer: Composting, 8. Which of the following is not one of the major environment problems resulting from human, interference in the nitrogen cycle?, (a) Global warming due to release of nitrous oxide, (b) Acid rain, (c) Eutrophication, (d) Ozone depletion, Answer: Ozone depletion, 9. Which of the following is not a major greenhouse gas_________, (a) Carbon dioxide, (c) Methane, (b) Water vapour, (d) Calcium carbonate, Answer: Calcium carbonate, 10. Montreal Protocol signed in 1987 was signed to_______, (a) Phase out the use of CFC's which cause depletion of the ozone layer, (b) Reduces the greenhouse effect, (c) Protect endangered species, (d) Ban nuclear testing in tropical oceans, Answer: Phase out the use of CFC's which cause depletion of the ozone layer, 11. Which of the following is not one of the prime health risks associated with greater UV radiation, through the atmosphere due to depletion of stratospheric ozone?, (a) Increased skin cancer, , livemcqs.com

Page 3 : livemcqs.com, (b) Reduced immune system, (c) Increased liver cancer, (d) Damage to eyes, Answer: Increased liver cancer, 12. Unburnt carbon particles causes__________, (a) Cardiac problem, (b) Respiratory problems, (c) Throat problems, (d) Skin infection, Answer: Respiratory problems, 13. Which of the following statements are correct in the context of carbon monoxide emissions?, 1. It is mainly due to incomplete combustion of fuel., 2. They are more evident in petrol engine., 3. Long-term exposure can cause nausea., Codes, (a) 1 and 2 only, (b) 2 and 3 only, (c) 1, 2, and 3, (d) 1 and 3 only, Answer: 1, 2, and 3, 14. Which of the following units is used to measure the intensity of noise?, (a) Decibel, (b) Phon, (c) Hz, (d) Watts/m, Answer: Decibel, 15. Human ear is most sensitive to noise in which of the following frequency range?, (a) 1-2 kHz, (c) 10-12 kHz, (b) 100-500 Hz, (d) 13-16 kHz, Answer: 13-16 kHz, , livemcqs.com

Page 4 : livemcqs.com, 16. Which of the following pairs regarding typical composition of hospitals wastes is incorrect?, (a) Plastics: 9-12%, (b) Metals: 1-2%, (c) Ceramic: 8-10%, (d) Biodegradable: 35-40%, Answer: Biodegradable: 35-40%, 17. Maximum soot is released from_________, (a) Petrol vehicles, (b) Diesel Vehicles, (c) CNG vehicles, (d) Thermal power plants, Answer: Thermal power plants, 18. Surface ozone is produced from___________, (a) Transport sector, (b) Textile industry, (c) Carbon monoxide, (d) None of the above, Answer: Transport sector, 19. In the metro city of Kolkata, the major cause of air pollution is____________, (a) Cement plants, (b) Chemical industry, (c) Hydrocarbons, (d) Water vapours, Answer: Cement plants, 20. Which of the following is the main discharge from coal based power plants (thermal plants)?, (a) SPM, (b) Smog, (c) Fly ash, (d) None of the above, Answer: Fly ash, 21. The chemical responsible for blue baby syndrome that is caused by restricted supply of oxygen to the, brain is________, (a) Nitrates, , livemcqs.com

Page 5 : livemcqs.com, (b) Fluorides, (c) Sulphates, (d) Oxides, Answer: Nitrates, 22. Which of the following metal is responsible for Minamata disease?, (a) Mercury, (b) Chromium, (c) Cadmium, (d) Iron, Answer: Mercury, 23. Intake of lead may primarily cause damage of the________, (a) Brain, (b) Liver, (c) Lung, (d) Kidney, Answer: Brain, 24. Which of the following geographic area is the largest Source of CO2, emissions from burning of fossil, fuel?, (a) China, (b) North America, (c) Russia, (d) European Union, Answer: North America, 25. Industries generating hazardous waste are classified as___________, (a) Brown, (b) Yellow, (c) Green, (d) Red, Answer: Red, 26. Which of the following greenhouse gases are entirely anthropogenic in origin?, (a) Water vapour, (b) CFCs, (c) Carbon dioxide, , livemcqs.com

Page 6 : livemcqs.com, (d) Methane, Answer: CFCs, 27. Peroxyacyl nitrate (PAN) is a by-product of____________, (a) Photochemical smog, (b) Sulphurous smog, (c) London smog, (d) None of the above, Answer: Photochemical smog, 28. The balance in oxygen level is maintained by________, (a) Photosynthesis and cellular respiration, (b) Industrial emissions of gases, (c) Release of ozone in upper atmosphere, (d) None of the above, Answer: Photosynthesis and cellular respiration, 29. Which of the following methods can be used to increase the supply of usable, good quality water?, (a) Chlorination, (b) Cloud seeding, (c) Metallurgy, (d) None of these, Answer: Cloud seeding, 30. According to WHO, the maximum permissible level of chlorides in drinking water is___________, (a) 100 mg/1, (b) 600 mg/1, (c) 200 mg/l, (d) 800 mg/1, Answer: 200 mg/l, 31. The main difference between primary air pollutants and secondary air pollutants is, (a) Former contains water molecules, while secondary pollutants do not., (b) Primary air pollutants have more direct effect on human health., (c) Former are released directly into the atmosphere, while the latter are formed by chemical, reactions in the atmosphere., (d) Primary air pollutants are formed through photochemical reactions in the sunlight, while the, secondary air pollutants are not., , livemcqs.com

Page 7 : livemcqs.com, Answer: Former are released directly into the atmosphere, while the latter are formed by chemical, reactions in the atmosphere, 32. Which of the following can be considered as the best example of primary air pollutants?, (a) Carbon dioxide released from burning of coal., (b) Sulphur trioxide., (c) Ozone produced in photochemical smog., (d) Carbon dioxide released through photosynthesis., Answer: Carbon dioxide released from burning of coal, 33. Which of the following best illustrates a secondary air pollutant?, (a) CO2, released from the burning of coal, (b) NO2, released from the burning of oil., (c) Ozone produced in photochemical smog., (d) None of the above, Answer: Ozone produced in photochemical smog, 34. The common features between NO2, SO2, CO2 and SPM is that all of them___________, (a) Are classified as primary pollutants., (b) Are classified as secondary pollutants., (c) Have equal role in causing acid rain., (d) Are greenhouse gases., Answer: Are classified as primary pollutants, 35. How are nitrogen oxides, sulphur oxides and carbon Oxides related?, (a) All of them are secondary air pollutants that contribute to global warming., (b) All of them are primary air pollutants that contribute to acid deposition., (c) All are air pollutants formed by combustion of fossil fuels., (d) All of them are air pollutants that result in respiratory diseases in humans., Answer: All of them are primary air pollutants that contribute to acid deposition, 36. Atmospheric pollutants are mainly present in_____, (a) Ionosphere, (b) Stratosphere, (c) Mesosphere, (d) Troposphere and lower stratosphere, Answer: Troposphere and lower stratosphere, , livemcqs.com

Page 8 : livemcqs.com, 37. Carbon dioxide and methane are similar in terms of__________, (a) Both being secondary air pollutants., (b) Being responsible for respiratory diseases., (c) Contribution to global warming., (d) None of the above, Answer: Contribution to global warming, 38. What is the main source of pollutants of nitrogen Oxides, sulphur oxides and carbon oxides?, (a) Photochemical reactions in the atmosphere., (b) Burning fossil fuels at high temperatures., (c) Industrial processes, (d) All the above, Answer: Burning fossil fuels at high temperatures., 39. Why is photochemical smog typically worse in the summer?, (a) There is more solar energy to drive photochemical reactions., (b) People tend to travel more in summers., (c) Warm temperatures prevent the dissipation of pollutants., (d) None of the above, Answer: There is more solar energy to drive photochemical reactions, 40. How does photochemical smog form?, (a) The release of primary air pollutants., (b) Interaction occurs between chemicals such as CFCs and ozone., (c) Reactions occur between secondary air pollutants and sunlight., (d) The release of formaldehyde and radon inside buildings., Answer: Reactions occur between secondary air pollutants and sunlight, 41. Which of the following can help in reducing air pollution?, (a) Small-sized cars, (b) Removal of sulphur from coal, (c) Lower ignition fuels, (d) None of the above, Answer: Removal of sulphur from coal, 42. Air pollution is an increasing problem in developing Countries due to________, (a) Burning of more coal to produce electricity., (b) Changing lifestyles., , livemcqs.com

Page 9 : livemcqs.com, (c) Unavailability of environment-friendly technologies., (d) All the above, Answer: All the above, 43. Quality of resource not degraded due to pollution is__________, (a) Sun, (b) Water, (c) Sand, (d) Air, Answer: Sun, 44. The main source of water pollution is_______, (a) Sewage water, (b) Industrial pollutants, (c) Acid rain, (d) None of the above, Answer: Sewage water, 45. Which of the following ultimately causes oxygen depletion in water bodies?, (a) Fish, (b) Human beings, (c) Microorganisms, (d) None of the above, Answer: Microorganisms, 46. Which of the following is a water-borne disease?, (a) Blue baby syndrome, (b) Typhoid, (c) Meningitis, (d) Cholera, Answer: Cholera, 47. Which one of the following is NOT a greenhouse gas found naturally in the atmosphere?, (a) Nitrogen oxide, (b) Carbon dioxide, (c) Methane, (d) Ozone, Answer: Nitrogen oxide, , livemcqs.com

Page 10 : livemcqs.com, 48. Baval trees should be planted and used to prevent and control, (a) Water pollution, (b) Air pollution, (c) Soil pollution, (d) Noise pollution, Answer: Air pollution, 49. The protocol which decided to completely phase out CFC is, (a) Cartagena protocol, (b) Stockholm Convention, (c) Montreal protocol, (d) Kyoto protocol, Answer: Montreal protocol, 50. Which of the following is/are not Green House Gases?, 1. Nitrous oxide, 2. Ozone, 3. Sulphur dioxide, Select the correct answer from the following codes, (a) Only 3, (b) Only 1 and 2, (c) Only 2 and 3, (d) 1, 2 and 3, Answer: Only 3, , livemcqs.com