Which one of the following is responsible for | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) Freons or chlorofluorocarbons $(CFCs)$ are responsible for the depletion of the ozone layer in the upper strata of the atmosphere.They are used as

Vedclass · Accepted Answer

Freons

Vedclass · Answer

(D) Freons or chlorofluorocarbons $(CFCs)$ are responsible for the depletion of the ozone layer in the upper strata of the atmosphere.They are used as propellants,aerosol spray caps,refrigerants,and fire-fighting reagents.They are stable and chemically inert compounds that absorb $UV$ radiation and break down,liberating free atomic chlorine.This chlorine atom causes the decomposition of ozone through a free radical reaction,resulting in the depletion of the ozone layer.Common freons include $Freon-11$ $(CFCl_3)$ and $Freon-12$ $(CF_2Cl_2)$.The reaction mechanism is as follows:$Cl^{\bullet} + O_3 \longrightarrow ClO^{\bullet} + O_2$$ClO^{\bullet} + O_3 \longrightarrow Cl^{\bullet} + 2O_2$

Which one of the following is responsible for depletion of the ozone layer in the upper strata of the atmosphere?

Similar Questions

Which of the following is used to extinguish fires caused by oil,fats,and petrol?

Which is the most commonly used refrigerant Freon-$12$?

Which of the following statements about chloroform $(CHCl_3)$ is false?

Chlorobenzene when condensed with chloral in the presence of conc. $H_2SO_4$ yields

The insecticide Gammexane is = .......

Vedclass Test Series

Exam Paper Generator

Online Exam Module