Question

Which of the following is not a common component of photochemical smog?

• A. Peroxyacetyl nitrate
• B. Acrolein
• C. Formaldehyde
• D. Carbon dioxide

Answer 1

Answer: (D)

Carbon dioxide

Answer 2

: The main steps for the formation of photochemical smog are

$NO_{2}\overset{\quad h\upsilon\quad}{\rightarrow}NO + O,0 + O_{2} \rightarrow O_{3}$

$NO + O_{3} \rightarrow NO_{2} + O_{2}$

$3CH_{4} + 2O_{3} \rightarrow 3HCHO$ (formaldehyde) +$3H_{2}O$

$CH_{2} = CHCH = O$ (Acrolein)

$CH_{3}\underset{\underset{O}{||}}{C}OONO_{2}$