hich of the following statements are false?a.Hydrochlorofluorocarbons have less chlorine content than CFCsb.Halomethanes are not involved in Ozone depletionc.Hydrochlorofluorocarbons are more effective than CFCs in ozone depletiond.Hydrochlorofluorocarbons can cause global warming

The following statements are false:

b. Halomethanes are not involved in Ozone depletion - This is false because Halomethanes, which include many types of CFCs, are indeed involved in ozone depletion.

c. Hydrochlorofluorocarbons are more effective than CFCs in ozone depletion - This is false because Hydrochlorofluorocarbons (HCFCs) are actually less effective at depleting the ozone layer than CFCs. They are often used as a substitute for CFCs because they are less damaging to the ozone layer.

The other statements are true:

a. Hydrochlorofluorocarbons have less chlorine content than CFCs - This is true. HCFCs were developed as a less damaging alternative to CFCs, and one of the ways they achieve this is by containing less chlorine, which is the element responsible for ozone depletion.

d. Hydrochlorofluorocarbons can cause global warming - This is true. While HCFCs are less damaging to the ozone layer than CFCs, they are still potent greenhouse gases that can contribute to global warming.