Photochemical Smog
Chemistry ⇒ Environmental Chemistry
Photochemical Smog starts at 10 and continues till grade 12.
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A city experiences high levels of photochemical smog during the summer. Suggest two strategies the city could implement to reduce smog formation.
Describe the process by which ozone is formed in the lower atmosphere during photochemical smog formation.
Describe the role of catalytic converters in controlling photochemical smog.
Describe two health effects associated with exposure to photochemical smog.
Explain the difference between classical (London) smog and photochemical (Los Angeles) smog.
Explain the role of sunlight in the formation of photochemical smog.
Explain why photochemical smog is more prevalent in urban areas than in rural areas.
A city experiences high levels of photochemical smog during the summer. Suggest two strategies the city could implement to reduce smog formation.
Photochemical smog is most likely to form under which of the following conditions?
(1) Cool, rainy days
(2) Hot, sunny days
(3) Windy, cloudy days
(4) Cold, snowy days
Which of the following is a correct sequence in the formation of photochemical smog?
(1) Emission of NOx and VOCs → Sunlight → Formation of secondary pollutants
(2) Sunlight → Emission of NOx and VOCs → Formation of secondary pollutants
(3) Formation of secondary pollutants → Emission of NOx and VOCs → Sunlight
(4) Emission of secondary pollutants → Sunlight → Formation of NOx and VOCs
Which of the following is a direct effect of photochemical smog on plants?
(1) Enhanced growth
(2) Chlorosis and leaf damage
(3) Increased fruit production
(4) None of the above
Which of the following is a major source of volatile organic compounds (VOCs) that contribute to photochemical smog?
(1) Power plants
(2) Automobiles
(3) Forest fires
(4) All of the above
Fill in the blank: The brownish color of photochemical smog is mainly due to the presence of __________.
Fill in the blank: The chemical formula for peroxyacetyl nitrate, a component of photochemical smog, is __________.
Fill in the blank: The main chemical reaction responsible for the formation of ozone in photochemical smog involves the reaction of oxygen atoms with __________.
Fill in the blank: The main photochemical reaction in smog formation is initiated by __________ radiation.
True or False: Ozone (O3) at ground level is a major component of photochemical smog.
True or False: Ozone in the stratosphere is harmful to human health.
True or False: Peroxyacetyl nitrate (PAN) is a secondary pollutant formed in photochemical smog.
True or False: Photochemical smog can be completely eliminated by banning all vehicles.
