ScienceClass 9CBSE
Q
Ozone-layer is getting depleted because of (a) excessive use of automobiles (b) excessive formation of industrial units (c) excessive use of man-made compounds containing both fluorine and chlorine (d) excessive deforestation.
A
Soln:
Answer is (c) excessive use of man-made compounds containing both fluorine and chlorine
Explanation:
Carbon and fluorine reacts with ozone to convert it into oxygen. This results in thinning of ozone lays which is called as ozone depletion.