Which of the following statements about ozone is true?
A. Ozone is a major constituent of photochemical smog
B. Ozone is highly reactive
C. It protects us from harmful UV radiations of sun
D. All of the above
Answer:C
Which of the following statements about ozone is true?
A. Ozone is a major constituent of photochemical smog B. Ozone is highly reactive C. It protects us from harmful UV radiations of sun D. All of the above