GENERAL KNOWLEDGE

Detailed explanation-1: -The ozone layer is being destroyed by chlorofluorocarbons. In this regard Fluorine atom is considered as the most harmful. Chlorofluorocarbons (CFCs) could deplete Earth’s atmospheric ozone layer, which blocks the sun’s damaging ultraviolet rays.

Detailed explanation-2: -Ozone sits in the upper atmosphere and absorbs ultraviolet radiaton, another type of solar energy that’s harmful to humans, animals and plants. CFCs and halons cause chemical reactions that break down ozone molecules, reducing ozone’s ultraviolet radiation-absorbing capacity.

Detailed explanation-3: -At high concentrations they can be acutely toxic, causing a number of adverse effects, including central nervous system depression, bronchial constriction, chest tightness, cough, difficulty breathing, pulmonary edema, dizziness, headache, confusion, incoordination, asphyxia, and cardiac sensitization.