Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Step-by-step solution

Freons are chlorine containing gas. On exposure to UV rays in the upper part of atmosphere, Freon dissociates to give free chlorine radicals, which result in depletion of O ₃ layer. Related Theory Freon is a non-combustible gas, used as a refrigerant in air conditioning applications. It undergoes an evaporation process over and over again to help produce cool air that can be circulated throughout the AC system.