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

  • A be very reactive and will attack ozone
  • B be non-reactive and will not attack ozone
  • C not change the level of ozone in the atmosphere
  • D increase the level of ozone in the atmosphere
jamb 2018chemistry

The correct answer is A. be very reactive and will attack ozone

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

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