state gov APPSC Forest/Assistant Beat Officer (ఫారెస్ట్/అసిస్టెంట్ బీట్ ఆఫీసర్) (Pre + Mains) Mock Test 2025 General Knowledge Ecology and Environment Environmental pollution
Which of the following synthetic chemicals was responsible for the sharp drop in the amount of ozone in the atmosphere in the 1980s?
1
Chloroiodocarbons
2
Iodobromocarbons
3
Chlorofluorocarbons
4
Iodofluorocarbons