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Atmospheric Pollution — CHEMISTRY STD 9 — Question

ICSE BoardEnglish MediumSTD 9CHEMISTRYAtmospheric Pollution1 Mark
MCQ
A decrease in the amount of ozone in the stratosphere is called depletion of the zone and it is caused by
  • A
    UV radiations of sun
  • ✓
    Use of CFC compounds
  • C
    excessive use of detergents
  • D
    Use of polychlorinated biphenyls
✓

Answer

Correct option: B.
Use of CFC compounds
Use of CFC compounds

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