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WBCS Preliminary Examination 2016 — General Studies · Question 114 of 200

Q114
General ScienceChemistry
Which among the following is responsible for depletion of Ozone layer?
  1. a.Carbon monoxide
  2. b.Carbon dioxide
  3. c.Chlorofluorocarbon
  4. d.Mercuric oxide

Answer: (C) Chlorofluorocarbon

Chlorofluorocarbons (CFCs) — compounds containing chlorine, fluorine, and carbon — are primarily responsible for the depletion of the stratospheric ozone layer. When CFCs reach the stratosphere, UV radiation breaks them apart, releasing chlorine atoms that catalytically destroy ozone molecules.

Q113 Whole paperQ115
Which among the following is responsible for depletion of Ozone layer? — WBCS Preliminary Examination 2016 Q114 | Prostuti360°