Which of the following element acts as a catalyst and responsible for the degradation of ozone and release of molecular oxygen in the stratosphere ? (a) Carbone (b) Chlorine (c) Iron (d) Oxygen
Option B.In stratosphere , Cl acts as a catalyst in the degradation of ozone and release of molecular oxygen . It is released by action of UV rays on a chlorofluorocarbon . Chlorine reacts with ozone in a series of chain reaction , converting it into oxygen