7.20 Which aerosols deplete ozone?
Freons which are used in aerosol sprays and as refrigerants is accountable for the depletion of the ozone layer, freons are also called chlorofluorocarbons.
CBSE extends single girl child scholarship registration deadline till November 20
CBSE reminds schools to submit registration data of Class 9, 11 students by October 16
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