Question

Which one of the following is not a commoncomponent of Photochemical Smog?

• A. Acrolein
• B. Peroxyacetyl nitrate
• C. Chlorofluorocarbons
• D. Ozone

Answer 1

The Correct Option is C

To determine which component is not common in photochemical smog, let's explore what constitutes photochemical smog and what the common components are.

Photochemical Smog: This is a type of air pollution that typically occurs in urban areas with a high amount of sunlight. It results from the reaction of sunlight with pollutants like hydrocarbons and nitrogen oxides in the atmosphere, leading to the formation of secondary pollutants.

Common Components of Photochemical Smog:

• Ozone (O₃): A major component formed from the reaction of nitrogen oxides and volatile organic compounds in the presence of sunlight.
• Peroxyacetyl Nitrate (PAN): This forms from the reaction between nitrogen oxides and hydrocarbons. It is an irritating compound often found in photochemical smog.
• Acrolein: It is a volatile and toxic aldehyde and another secondary pollutant formed during these chemical reactions.

Non-common Component: Chlorofluorocarbons (CFCs) are not typically associated with photochemical smog. CFCs are more commonly linked with ozone layer depletion in the stratosphere due to their release of chlorine atoms when broken down by UV radiation.

Therefore, when examining the options:

• Acrolein
• Peroxyacetyl nitrate
• Ozone
• Chlorofluorocarbons (Correct Answer: Not a component of photochemical smog)

Based on the explanation above, the correct answer to the question is that Chlorofluorocarbons are not a common component of photochemical smog.