In the upper atmosphere, the ultra-violet light breaks off a free chlorine atom from chlorofluorocarbon molecule. The effect of this is that the free chlorine atom will
-
be very reactive and will attack ozone
- be non-reactive and will not attack ozone
- not change the level of ozone in the atmosphere
- increase the level of ozone in the atmosphere
The correct answer is: A
Explanation
CFCs (Chlorofluorocarbons) have a lifetime in the atmosphere of about 20 to 100 years, and consequently one free chlorine atom from a CFC molecule can do a lot of damage, destroying ozone molecules for a long time
There is an explanation video available .