Irritation in the eyes during smog is a common occurrence. This is primarily caused by:
A. Formaldehyde
B. Peroxyacetyl Nitrate
C. Ozone
D. Acrolein
Select the correct answer from the options below:

Correct option is B

Eye irritation during smog is primarily caused by:
· A. Formaldehyde: A volatile organic compound (VOC) that is a component of smog and can cause irritation to the eyes, nose, and throat.
· B. Peroxyacetyl Nitrate (PAN): A major eye irritant in photochemical smog. It forms through the interaction of volatile organic compounds (VOCs) and nitrogen oxides (NOx) under sunlight.
· D. Acrolein: A highly irritating VOC that is commonly present in smog and contributes to eye, nose, and throat irritation.
· C. Ozone: While ozone is a significant component of smog and can cause respiratory issues, it is less directly associated with eye irritation compared to the other listed compounds.
Information booster:
1. Formaldehyde, Peroxyacetyl Nitrate (PAN), and Acrolein are well-known irritants in urban air pollution, particularly in areas with high levels of smog.
2. Photochemical smog results from the chemical reactions of pollutants under sunlight, producing harmful secondary pollutants like PAN.