Which of the following does not contain halogens that can deplete the Ozone layer?a.Propellantsb.Refrigerantsc.Fluropolymersd.Foam blowing agents

The option that does not contain halogens that can deplete the Ozone layer is c. Fluropolymers.

Here's why:

a. Propellants: Many aerosol propellants have historically used chlorofluorocarbons (CFCs), which are a type of halogen that can deplete the ozone layer.

b. Refrigerants: Many refrigerants, especially older ones, contain CFCs or hydrochlorofluorocarbons (HCFCs), both of which are halogens that can deplete the ozone layer.

c. Fluropolymers: Fluropolymers, such as Teflon, are types of polymers that contain fluorine atoms. While fluorine is a halogen, it does not deplete the ozone layer when it is part of a stable polymer like Teflon.

d. Foam blowing agents: Many foam blowing agents, especially older ones, contain CFCs or HCFCs, both of which are halogens that can deplete the ozone layer.