1. : Which pollutant results from roasting and heating processes?
(A) Dust
(B) Smoke
(C) Metal fumes
(D) All of these
2. : Which pollutants result from chemicals, petroleum, and paper industries?
(A) SOx
(B) Hydrocarbons
(C) NOx
(D) All of these
3. : Which process is used for the removal of particulates?
(A) Wet removal by precipitation
(B) Diffusion and impaction
(C) Sedimentation
(D) All of these
4. : Which environmental problem could lead to a rise in sea level?
(A) Acid rain
(B) Cutting down the trees in the rain forests
(C) Global warming
(D) Damage to the ozone layer
5. : Which gas is not a greenhouse gas?
(A) O3
(B) CO
(C) CH4
(D) H2O vapors
6. : Environmental pollution refers to which of the following?
(A) Release of toxic/undesirable materials in environment
(B) Dissipation of energy
(C) Peeling of top soil
(D) None of these
7. : Which of the following agricultural fields produces maximum methane gas into the atmosphere?
(A) Wheat field
(B) Groundnut field
(C) Cotton field
(D) Paddy field
8. : Photochemical smog is caused primarily by which of the following?
(A) CO
(B) NO2
(C) O3
(D) CO₂
9. : Photochemical smog consists of excessive amount of X in addition to aldehydes, ketones, PAN, etc. X is:
(A) Methane
(B) Carbon monoxide
(C) Ozone
(D) Carbon dioxide
10. : Which is/are related to effects of photochemical smog?
(A) Birth defects
(B) Aggravation of asthma
(C) Coughing and irritation of eyes
(D) All of these
11. : Which statement is/are true with regard to effects of particulate matter?
(A) With ozone act as allergens
(B) Affect the lungs of adults
(C) Aggravation of asthma
(D) All of these
12. : Which methods are involved with regard to control of particulate matter?
(A) Electrostatic precipitators
(B) Wet scrubbers
(C) Cyclonic separators
(D) All of these
13. : Ozone hole refers to which of the following?
(A) Decrease of thickness of ozone in troposphere
(B) Decrease in thickness of ozone layer in stratosphere
(C) Black hole
(D) Increase concentration of ozone in the atmosphere
14. : Photochemical smog is related to which of the following?
(A) Air pollution
(B) Water pollution
(C) Land pollution
(D) Soil pollution
15. : What are the sources of organic particulate matter?
(A) Emission from vegetation
(B) Combustion of fossil fuels
(C) Emission from automobiles
(D) All of these
16. : Which of the following is the residue which is formed on combustion of fuel in power plants?
(A) Dust
(B) Soot
(C) Smoke
(D) Activated carbon
17. : Which of the following is the phenomenon that the earth magnetic field has a strong influence on the ions in the upper atmosphere?
(A) Magnetic effect
(B) Van Allen belts
(C) Electric effect
(D) Electrical thundering
18. : Which substance acts as photochemical oxidant?
(A) NOx
(B) Peroxyacetyl nitrate
(C) Ozone
(D) All of these
19. : Which pollutant is generated from combustion of fuel?
(A) Smoke
(B) SO2
(C) CO2
(D) All of these
20. : Which free radical is existing in the atmosphere?
(A) CH3
(B) HOO
(C) CH3COO
(D) HCO
21. : Commercial incinerators produce:
(A) NOx
(B) CO
(C) Smoke
(D) All of these
22. : SO is generated from which industry?
(A) Drying and packing
(B) Paper and pulp
(C) Pulp
(D) Paper
23. : Which gas defends us from harmful effects of UV radiation?
(A) O3
(B) NO2
(C) CO
(D) SO2
24. : Ozone filters out radiation below:
(A) 1000 Å
(B) 2000 Å
(C) 4000 Å
(D) 3000 Å
25. : Chlorofluorocarbons (CFC) are widely used as coolants in:
(A) Air conditioners
(B) Aerosol propellants
(C) Cleaning solvents
(D) All of these
26. : The reduction in ozone layer would lead to:
(A) Temperature changes
(B) Increase in UV radiation on earth
(C) Cancer
(D) All of these
27. : What products are formed when ozone absorbs UV light (308 nm)?
(A) O₂+ + e⁻
(B) O₂ + O
(C) O+ + e⁻
(D) O + O
28. : What is the maximum concentration of ozone in the stratosphere at an altitude of 25-30 km?
(A) 10 ppm
(B) 5 ppm
(C) 15 ppm
(D) 20 ppm
29. : Which pollutant is not a primary pollutant?
(A) Ash
(B) SO3
(C) Fumes
(D) Smoke
30. : Which pollutant is not a secondary pollutant?
(A) SO2
(B) NO2
(C) SO3
(D) Peroxyacetyl nitrate (PAN)
31. : Which substance is normally not considered an air pollutant?
(A) CO
(B) NO₂
(C) SO₂
(D) CO₂
32. : Particulate from soil and mineral primarily contains
(A) Sodium compounds
(B) Calcium, aluminum and silicon compounds
(C) Aluminum compounds
(D) Calcium compounds
33. : The most harmful components of incomplete combustion are normally grouped as particulate polycyclic organic matter (PPOM). These materials are derivatives of
(A) Benzene
(B) Benz-a-pyrene
(C) Anthracene
(D) Naphthalene
34. : Ozone can react with which chemical species?
(A) NO
(B) O
(C) HO Cons
(D) All of these
35. : Which statement is not related with SO₂?
(A) It is a colorless gas
(B) It is reduced slowly in clear air to H₂S
(C) It is moderately soluble in water
(D) It has sharp and pungent odor
36. : Which gas forms weakly acidic sulphurous acid (H₂SO₃)?
(A) SO₂
(B) SO₃
(C) NO₂
(D) N₂O
37. : Which oxide is formed in appreciable quantity in the atmosphere?
(A) NO₂
(B) NO
(C) N₂O
(D) All of these
38. : Which statement is not relevant with nitrous oxide?
(A) It is a colorless and odorless gas
(B) It has high reactivity in the lower atmosphere
(C) It is existing in the atmosphere in higher concentration
(D) It is non-toxic gas
39. : Which of the following are Aerosols of natural origin with diameter less than 0.2 μ?
(A) Beta-particles
(B) Gamma particles
(C) Alpha-particles
(D) Aitken particles
40. : Which substance acts as gaseous pollutant?
(A) SO₂
(B) NO₂
(C) NO
(D) All of these
41. : Which statement is not related with nitric oxide?
(A) It is a colorless and odorless gas
(B) It is produced largely by fuel combustion
(C) It is a brown pungent gas
(D) It absorbs sunlight and starts photochemical reactions
42. : Which statement is not regarding nitrogen dioxide?
(A) It is produced by the oxidation of NO
(B) Its small concentration has been detected in lower stratosphere
(C) It is major pollutant
(D) It does not absorb sunlight
43. : Which statement is related with CO?
(A) It constitutes the single largest pollutant in urban atmosphere
(B) It is a colorless and tasteless gas matter
(C) It has less affinity towards hemoglobin
(D) It has a boiling point of 192°C
44. : Which statement is not true regarding hydrocarbons?
(A) They are gaseous and liquids
(B) They can be saturated or unsaturated
(C) They in air by themselves alone cause harmful effects
(D) They form photochemical oxidants
45. : Which pollutant results from combustion of fossil fuels?
(A) SO₂
(B) NOx
(C) CO
(D) All of these
46. : Which process is used for the removal of gases?
(A) Absorption
(B) Chemical reaction in the atmosphere
(C) Precipitation
(D) All of these
47. : Which health effect is caused by lead?
(A) Neurotoxicity
(B) Cancer
(C) Hypertension
(D) Kidney damage
48. : Which health effect is caused by mercury?
(A) Nerve damage
(B) Kidney damage
(C) Brain damage
(D) All of these
49. : Which health effect is caused by cadmium?
(A) Kidney damage
(B) Cardiovascular problem
(C) Hypertension
(D) All of these
50. : Which is existing in photochemical smog?
(A) Aldehydes
(B) NOx
(C) PAN
(D) All of these
51. : Which of the following is the most hazardous metal pollutant of automobile exhaust?
(A) Lead
(B) Tin
(C) Cadmium
(D) Mercury
52. : Which plays an important role in depletion of ozone layer?
(A) Oxides of sulphur
(B) Oxides of carbon
(C) Oxides of nitrogen
(D) None of these
53. : When/Where Photochemical smog is normally formed?
(A) In early hours of winters
(B) When intensity of solar radiations is very low
(C) Around mid-day in summer months
(D) When concentration of particulate matter is very low
54. : Which reacts with hemoglobin of blood and produce toxic effect?
(A) Carbon dioxide
(B) Nitrogen oxide
(C) Oxygen
(D) Carbon monoxide
55. : Which is major sink for carbon monoxide?
(A) Soil
(B) Water
(C) Animal respiration
(D) Salts dissolved in ocean water
56. : U.V. radiation from the sun causes a reaction in the atmosphere that leads to production of
(A) Nitrogen oxides
(B) Ozone
(C) Sulphur dioxide
(D) Carbon monoxide
57. : Which pose threat to Historical monument Taj Mahal?
(A) Floods in Yamuna river
(B) Temperature mediated spoilage of
(C) Weathering of marble
(D) Air pollutants from Mathura refinery marble
58. : Which is not a pollutant from the exhaust of motor?
(A) Hydrocarbons
(B) Carbon monoxide
(C) Fly ash
(D) NOx
59. : Acid rain is caused due to increase in the concentration of in the atmosphere
(A) Ozone and dust
(B) SO₂ and NO₂
(C) SO3 and CO
(D) CO₂ and CO
60. : Maximum thinning of ozone (hole) has spread over which of the following?
(A) Antarctica
(B) America
(C) Europe
(D) Australia
61. : Atmosphere of metropolitan cities is mostly polluted by which of the following?
(A) Household waste
(B) Pesticide residue
(C) Automobile exhausts
(D) Radio-active fall out
62. : Green chemistry refers to:
(A) Chemistry of plants
(B) Chemistry of green pigments
(C) Development of chemical products and processes less harmful to humans
(D) Chemistry of greenhouse effect
63. : What is Result of ozone hole?
(A) Acid rain
(B) Greater exposure of earth to U.V. rays
(C) Increased amount of CO2
(D) Global warming
64. : Air pollution is not caused by which of the following?
(A) Pollen grains
(B) Automobiles
(C) Industries
(D) Hydroelectric power
65. : Which is atmosphere pollutant?
(A) CO2
(B) CO
(C) O2
(D) N2
66. : Ozone layer of upper atmosphere is being destroyed by
(A) Photochemical oxidants/O2 and CO₂
(B) SO2
(C) Chlorofluorocarbons
(D) Smog
67. : Ozone depletion in stratosphere will result in which of the following?
(A) Increased incidence of skin cancer
(B) Forest fires
(C) Global warming
(D) Acid rain
68. : Which one of the following is a source of energy but does not cause pollution?
(A) Gasoline
(B) Solar energy
(C) Fossil fuels
(D) Nuclear power plant
69. : Which substance is not existing in acid rain?
(A) Sulphuric acid
(B) Nitric acid
(C) Sulphurous acid
(D) Acetic acid
70. : Which is not a chemical pollutant?
(A) Solid waste
(B) Insecticides
(C) Norse
(D) Liquid waste
71. : Earth is protected from UV radiations by which of the following?
(A) Carbon dioxide layer
(B) Oxygen layer
(C) Troposphere
(D) Ozone layer
72. : Which responsible for depletion of ozone layer in upper strata of the atmosphere?
(A) Freons
(B) Ferrocene
(C) Fullerenes
(D) Polyhalogens
73. : The smog is essentially caused by the presence of which of the following?
(A) O3 and N2
(B) O2 and O3
(C) Oxides of sulphur and nitrogen
(D) O2 and N2
74. : Ozone acts as ______.
(A) Saver
(B) Pollutant
(C) Oxidant
(D) All of these
75. : In Which layer of atmosphere there is more thickness of ozone layer?
(A) Stratosphere
(B) Troposphere
(C) Mesosphere
(D) Photosphere
76. : Which air pollutants more dangerous for ozone layer?
(A) Halogens
(B) CO2
(C) Oxides of nitrogen
(D) CO
77. : Which of the following of blood and reacts produce with toxic effect.
(A) Carbon dioxide
(B) Carbon sub oxide
(C) Oxygen
(D) Carbon monoxide
78. : Carbon dioxide content in atmosphere is:
(A) 0.034 %
(B) 0.0034%
(C) 0.34%
(D) 3.4 %
79. : Which of the following is secondary pollutant?
(A) PAN
(B) CO₂
(C) CO
(D) Aerosol
80. : DDT is
(A) Biodegradable pollutant
(B) No degradable contaminant
(C) Air pollutant
(D) An antibiotic
81. : Peeling of ozone umbrella is due to which of the following?
(A) CO2
(B) PAN
(C) CFCs
(D) Coal burning
82. : Ozone layer of stratosphere needed protection from indiscriminate use of
(A) Aerosols and high flying jets
(B) Fungicides, insecticides, bactericides etc.
(C) Atomic explosions and industrial wastes
(D) Weather balloons
83. : Which statement is/are true regarding Aitken particles?
(A) Their size is in the range of 0.1-0.15 μ
(B) These particles originate from vegetation
(C) They are colloidal in nature
(D) All of these