Question

When does the amount of photochemical smog peak?
a. dawn
b. midday
c. twilight
d. night

From what ive found it is morning and afternoon so I have no idea what to choose

Answer 1

Most likely afternoon as that is when the most production will happen.

Answer 2

Answer: midday

Figure 1. Photochemical smog over Shanghai. Photochemical smog is a type of smog produced when ultraviolet light from the sun reacts with nitrogen oxides in the atmosphere. It is visible as a brown haze, and is most prominent during the morning and afternoon, especially in densely populated, warm cities

Hope this helps :)