Discussion
Which of the following is the effect of photochemical smog ?
Answer: A
The effect is Headaches, eyes, nose and throat irritation.
Photochemical smog forms when nitrogen oxides and hydrocarbons react in sunlight to produce ozone, peroxyacetyl nitrate (PAN) and aldehydes. These are strong irritants of the eyes and respiratory tract and cause headaches, coughing and breathing difficulty.
Gastrointestinal, renal and bone disorders are not characteristic effects of smog, which acts mainly on the eyes and airways.
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