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Ozone hole was detected in which of the following years ?
1. 1958
2. 1972
3. 1985
4. 1995

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Correct Answer - Option 3 : 1985

The correct answer is 1985.

  • In the scientific journal Nature on May 16, 1985, three scientists from the British Antarctic detect abnormally low levels of ozone over the South Pole.
    • Their discovery is commonly known as the Ozone Hole.
  • In the atmosphere, Chlorofluorocarbons (CFCs) drift slowly upward to the stratosphere, where they are broken up by ultraviolet radiation, releasing chlorine atoms, which can destroy ozone molecules.
  • CFCs are the main reason for the Ozone hole.
  • The Negative Effects of the ozone hole are certain types of skin cancers, eye cataracts, and immune deficiency disorders.

  • Ozone depletion is greatest near poles.
  • The ozone layer is a natural layer of gas in the upper atmosphere that protects humans and other living things from harmful ultraviolet (UV) radiation from the sun.
  • The ozone layer exists in the stratosphere, a layer 10 to 50 km above the Earth’s surface.
  • The international community established the Montreal Protocol on ozone-depleting substances in 1987, to address the destruction of the ozone layer.

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