Question

The major ozone depleting substance out of the following is _____________.

• A. $CFCs$
• B. $O_2$
• C. Nitrogen
• D. All of these

Answer 1

Answer: (A)

$CFCs$

Ozone-depleting substances (ODS) are substances that react with ozone present in the stratosphere and destroy the same. The major Ozone-depleting substances are chlorofluorocarbons (14% of total depletion), nitrogen oxides (3.5% depletion), sulphur dioxide, halon, carbon tetrachloride, methyl chloroform, chlorine, etc.