Multiple choice

Which gas destroys stratospheric ozone?

  1. Cl2F2C

  2. CO

  3. NO2

  4. SO2

Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Cl2F2C, also known as Dichlorodifluoromethane or Freon-12, is a chlorofluorocarbon (CFC) that releases chlorine atoms in the stratosphere, which catalyze the destruction of ozone molecules.