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SSC MTS 2019 PYQ — Question 40

SSC MTS Previous Year - 07 August 2019 - Shift 1 • General Awareness • Q40

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Which of the following synthetic chemical is responsible for ozone layer depletion?

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Correct answer: B

Explanation

Correct Answer is option 2 i.e. Chlorofluorocarbons

Ozone layer depletion:

  • Ozone layer depletion causes increased UV radiation levels at the Earth's surface, which is damaging to human health.
  • Negative effects include increases in certain types of skin cancers, eye cataracts and immune deficiency disorders.

Reason:
  • Ozone depletion occurs when chlorofluorocarbons (CFCs) and halons—gases formerly found in aerosol spray cans and refrigerants—are released into the atmosphere (see details below).
  • CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone's ultraviolet radiation-absorbing capacity.