Photochemical Smog
Chemistry ⇒ Environmental Chemistry
Photochemical Smog starts at 10 and continues till grade 12.
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See sample questions for grade 11
A city experiences high levels of photochemical smog during the summer. Suggest two measures the city can take to reduce smog formation.
Describe one way in which photochemical smog can be harmful to plants.
Describe the difference between classical (London-type) smog and photochemical (Los Angeles-type) smog.
Describe the process by which nitrogen dioxide (NO2) contributes to the formation of ozone in photochemical smog.
Explain the role of sunlight in the formation of photochemical smog.
Explain why children and elderly people are more vulnerable to the effects of photochemical smog.
Explain why photochemical smog is considered a secondary pollution problem.
A city experiences high levels of photochemical smog during the summer. Suggest two measures the city can take to reduce smog formation.
Which of the following is a direct effect of photochemical smog on materials?
(1) Corrosion of metals
(2) Fading of dyes
(3) Cracking of rubber
(4) All of the above
Which of the following is a major health effect of exposure to photochemical smog?
(1) Skin cancer
(2) Respiratory problems
(3) Hearing loss
(4) Bone fractures
Which of the following is a major source of volatile organic compounds (VOCs) that contribute to photochemical smog?
(1) Industrial solvents
(2) Sea spray
(3) Soil erosion
(4) Wind erosion
Which of the following is a reaction that leads to the formation of ozone in photochemical smog?
(1) NO2 + sunlight → NO + O
(2) O + O2 → O3
(3) Both (1) and (2)
(4) None of the above
Fill in the blank: The chemical formula for peroxyacetyl nitrate, a component of photochemical smog, is _______.
Fill in the blank: The main chemical reaction in photochemical smog involves nitrogen oxides, volatile organic compounds, and _______.
Fill in the blank: The main chemical reaction in photochemical smog involves the photolysis of _______.
Fill in the blank: The presence of _______ in the atmosphere increases the rate of photochemical smog formation by providing more reactive hydrocarbons.
Photochemical smog is most likely to occur on hot, sunny days. True or False?
True or False: Ozone in the stratosphere protects us from harmful ultraviolet radiation, but ozone in the troposphere is a pollutant.
True or False: Photochemical smog can be reduced by increasing the use of renewable energy sources.
True or False: Photochemical smog can cause eye irritation and coughing in humans.
