The day starts out bright and sunny. Later, a brown haze ...

[misspop]

The day starts out bright and sunny. Later, a brown haze develops. This indicates the presence of
 
  A) nitrogen dioxide.
  B) ozone.
  C) carbon monoxide.
  D) methane.

Question 2

The primary reaction in the formation of photochemical smog is
 
  A) 2 NO + O2  2 NO2.
  B) NO2 + sunlight  NO + O.
  C) O + O2  O3.
  D) O3 + hydrocarbons  aldehydes.

Question 3

A cyclic hydrocarbon containing seven carbon atoms and two double bonds will have the formula
 
  A) C7H16.
  B) C7H14.
  C) C7H12.
  D) C7H10.

[TheDev123]

Answer to Question 1

A

Answer to Question 2

B

Answer to Question 3

D