Multiple choice

What is the actual reason behind this depletion?

Ozone gas absorbs the UV-radiation of Sun and gets converted into oxygen (O2). This prevents mutagenic activities of UV-radiation of the living world. So, ozone layer is indispensible to safe life & the depletion of ozone layer due to manmade activities could be catastrophic.

  1. Excessive contamination of different environmental resources

  2. Construction of building and continuous civilization

  3. Many modern techniques which result in degradation & environmental pollution

  4. Production and release of CFC (chlorofluorocarbons) from different industrial chemicals

  5. Exhaust fumes of automobiles & radioactive contamination of air
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The actual reason behind this depletion is the production & release of CFC (chlorofluorocarbons) from different industrial chemicals. The use of CFC cannot be controlled as it is extremely valuable, useful & extensively used in industry (as refrigerants & aerosol propellants).

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