Question
Question: Which of the following is responsible for depletion of ozone in upper strato of the atmosphere-...
Which of the following is responsible for depletion of ozone in upper strato of the atmosphere-
A
Polyhalogens
B
Ferrocene
C
Fullerenes
D
Freons
Answer
Freons
Explanation
Solution
freon's or chlorofluro carbon (CFCS) are responsible for depletion of ozone.
CF2Cl2(g) + hn ¾¾® C˙l(g)+C˙ClF2( g)
(Free radical)
+ O3(g) ¾¾® ClO(g) + O2(g)
ClO + Og ¾¾® + O2