AIR POLLUTION MCQs

By: Prof. Dr. Fazal Rehman | Last updated: May 23, 2025

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1. : Which pollutant results from roasting and heating processes?



2. : Which pollutants result from chemicals, petroleum, and paper industries?



3. : Which process is used for the removal of particulates?



4. : Which environmental problem could lead to a rise in sea level?



5. : Which gas is not a greenhouse gas?



6. : Environmental pollution refers to which of the following?



7. : Which of the following agricultural fields produces maximum methane gas into the atmosphere?



8. : Photochemical smog is caused primarily by which of the following?



9. : Photochemical smog consists of excessive amount of X in addition to aldehydes, ketones, PAN, etc. X is:



10. : Which is/are related to effects of photochemical smog?



11. : Which statement is/are true with regard to effects of particulate matter?



12. : Which methods are involved with regard to control of particulate matter?



13. : Ozone hole refers to which of the following?



14. : Photochemical smog is related to which of the following?



15. : What are the sources of organic particulate matter?



16. : Which of the following is the residue which is formed on combustion of fuel in power plants?



17. : Which of the following is the phenomenon that the earth magnetic field has a strong influence on the ions in the upper atmosphere?



18. : Which substance acts as photochemical oxidant?



19. : Which pollutant is generated from combustion of fuel?



20. : Which free radical is existing in the atmosphere?



21. : Commercial incinerators produce:



22. : SO is generated from which industry?



23. : Which gas defends us from harmful effects of UV radiation?



24. : Ozone filters out radiation below:



25. : Chlorofluorocarbons (CFC) are widely used as coolants in:



26. : The reduction in ozone layer would lead to:



27. : What products are formed when ozone absorbs UV light (308 nm)?



28. : What is the maximum concentration of ozone in the stratosphere at an altitude of 25-30 km?



29. : Which pollutant is not a primary pollutant?



30. : Which pollutant is not a secondary pollutant?



31. : Which substance is normally not considered an air pollutant?



32. : Particulate from soil and mineral primarily contains



33. : The most harmful components of incomplete combustion are normally grouped as particulate polycyclic organic matter (PPOM). These materials are derivatives of



34. : Ozone can react with which chemical species?



35. : Which statement is not related with SO₂?



36. : Which gas forms weakly acidic sulphurous acid (H₂SO₃)?



37. : Which oxide is formed in appreciable quantity in the atmosphere?



38. : Which statement is not relevant with nitrous oxide?



39. : Which of the following are Aerosols of natural origin with diameter less than 0.2 μ?



40. : Which substance acts as gaseous pollutant?



41. : Which statement is not related with nitric oxide?



42. : Which statement is not regarding nitrogen dioxide?



43. : Which statement is related with CO?



44. : Which statement is not true regarding hydrocarbons?



45. : Which pollutant results from combustion of fossil fuels?



46. : Which process is used for the removal of gases?



47. : Which health effect is caused by lead?



48. : Which health effect is caused by mercury?



49. : Which health effect is caused by cadmium?



50. : Which is existing in photochemical smog?



51. : Which of the following is the most hazardous metal pollutant of automobile exhaust?



52. : Which plays an important role in depletion of ozone layer?



53. : When/Where Photochemical smog is normally formed?



54. : Which reacts with hemoglobin of blood and produce toxic effect?



55. : Which is major sink for carbon monoxide?



56. : U.V. radiation from the sun causes a reaction in the atmosphere that leads to production of



57. : Which pose threat to Historical monument Taj Mahal?



58. : Which is not a pollutant from the exhaust of motor?



59. : Acid rain is caused due to increase in the concentration of in the atmosphere



60. : Maximum thinning of ozone (hole) has spread over which of the following?



61. : Atmosphere of metropolitan cities is mostly polluted by which of the following?



62. : Green chemistry refers to:



63. : What is Result of ozone hole?



64. : Air pollution is not caused by which of the following?



65. : Which is atmosphere pollutant?



66. : Ozone layer of upper atmosphere is being destroyed by



67. : Ozone depletion in stratosphere will result in which of the following?



68. : Which one of the following is a source of energy but does not cause pollution?



69. : Which substance is not existing in acid rain?



70. : Which is not a chemical pollutant?



71. : Earth is protected from UV radiations by which of the following?



72. : Which responsible for depletion of ozone layer in upper strata of the atmosphere?



73. : The smog is essentially caused by the presence of which of the following?



74. : Ozone acts as ______.



75. : In Which layer of atmosphere there is more thickness of ozone layer?



76. : Which air pollutants more dangerous for ozone layer?



77. : Which of the following of blood and reacts produce with toxic effect.



78. : Carbon dioxide content in atmosphere is:



79. : Which of the following is secondary pollutant?



80. : DDT is



81. : Peeling of ozone umbrella is due to which of the following?



82. : Ozone layer of stratosphere needed protection from indiscriminate use of



83. : Which statement is/are true regarding Aitken particles?



 

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