India Exam Junction
20. HCFCs (Hydrochlorofluorocarbons) are also known as:
Natural Sink of Ozone
Natural Barrier to Ozone
Natural Drain of Ozone
Natural Source of Ozone
Correct Answer :
Natural Drain of Ozone
Solution
HCFCs (Hydrochlorofluorocarbons) are referred to as the natural drain of ozone because they release chlorine atoms when broken down in the stratosphere, which contributes to ozone layer depletion.