🔬 Science & TechnologyUPSC 2003Space & Space Technology

Which one of the following is produced during the formation of photochemical smog?

aHydrocarbons
bNitrogen Oxide
cOzone
dMethane
✓ Correct answer: c) Ozone
ExplanationPhotochemical smog is a type of air pollution that occurs when sunlight reacts with pollutants like nitrogen oxides and volatile organic compounds (VOCs), including hydrocarbons.The reaction leads to the formation of ozone, which is a key component of photochemical smog.Key Components of Photochemical Smog are:Nitrogen Oxides – Released from vehicles, industrial emissions, and power plants.They react with sunlight to form ozone.Hydrocarbons: Organic compounds that also contribute to ozone formation when exposed to sunlight.Ozone : The primary harmful product of photochemical smog, which can cause respiratory problems and damage to vegetation.Methane is a potent greenhouse gas, but it does not directly form photochemical smog.While it can contribute indirectly to smog formation by reacting with other pollutants, it is not a primary component like ozone, hydrocarbons, or nitrogen oxides.368

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