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Environmental Issues — BIOLOGY STD 12 Science — Question

Maharashtra BoardEnglish MediumSTD 12 ScienceBIOLOGYEnvironmental Issues1 Mark
MCQ
Freon gas causing stratospheric $O_3$​ depletion is mainly released from:
  • ✓
    Refrigerator
  • B
    Automobile
  • C
    Thermal power plant
  • D
    Steel industry
✓

Answer

Correct option: A.
Refrigerator
Freon or Aerosols or Chlorofluorocarbons $(CFCs)$ are the chemicals used as refrigerants, propellants and solid plastic foams. The chemicals are also released as aerosol by jets.
Along with nitrous oxide, $CFCs$ react with ozone of ozonosphere and deplete the same.

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