Question

_____________ used as refrigerants and aerosol propellants are also greenhouse gases.
A.Perfluorocarbons.
B.Sulfur hexafluoride.
C.Chlorofluorocarbons (CFC's).
D.None of the above.

Answer 1

Hint: We know that the CFCs are a common name of some substances that are similar in chemical nature. These are the derivatives of hydrocarbons. It is an odourless, colorless, inactive, and cheap material. This is a stable substance that after emission can exist in the environment for many years.

Complete answer:
CFC stands for chlorofluorocarbon, which is an organic compound made up of carbon, fluorine, and chlorine. Hydrochlorofluorocarbons, or HCFCs, are CFCs that also contain hydrogen in place of one or more chlorines. Carbon in CFCs bonds with tetrahedral symmetry, much as in simpler alkanes. The methane-derived CFCs deviate from perfect tetrahedral symmetry because the fluorine and chlorine atoms vary greatly in size and effective charge from hydrogen and each other. CFC particles are suspended in the environment. These are used commercially as refrigerants or cooling agents.
Due to their low toxicity, reactivity, and flammability, CFCs and HCFCs are used in a variety of applications. Every possible mixture of fluorine, chlorine, and hydrogen-based on methane and ethane has been studied, and the majority of them have been commercialized. As a precursor to tetrafluoroethylene, the monomer that is converted into Teflon, billions of kilograms of chlorodifluoromethane are produced each year. Propellants in medical applications and degreasing solvents are only a few of the applications.

Note:
Remember that the CFCs are the third important substance responsible for causing the greenhouse effect. Methane, carbon dioxide, and water vapor molecules are also included in greenhouse gases. Chlorofluorocarbon compounds cause negative effects in the environment like the greenhouse effect, ozone depletion, and air pollution.