State the uses and harmful effects of tetrachloromethane (carbon tetrachloride) $CCl_4$.

(N/A) Uses of carbon tetrachloride:
It is produced in large quantities for use in the manufacture of refrigerants and propellants for aerosol cans.
It is used as a raw material for the synthesis of chlorofluorocarbons and other chemicals.
Until the mid-$1960$s,it was widely used as a cleaning fluid for grease,a spot remover in homes,and as a fire extinguisher.
$(b)$ Harmful effects of carbon tetrachloride:
Exposure to carbon tetrachloride causes liver cancer in humans.
It causes dizziness,lightheadedness,nausea,and vomiting,which leads to permanent damage to nerve cells.
Severe exposure can cause stupor,coma,and death.
When released into the air,it reaches the atmosphere and depletes the ozone layer.
Depletion of the ozone layer increases human exposure to ultraviolet rays,leading to skin cancer,eye diseases,and disorders,and potential disruption of the immune system.