Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.
(iv) Unsaturated hydrocarbon
The answer is the option
Explanation: When NO and hydrocarbons are present in large amounts in the atmosphere in the presence of sunlight in summer, photochemical smog is formed. is not responsible for the formation of photochemical smog.