Which refrigerant depletes the ozone layer? (A) A) R-32 (B) B) R-717 (C) G)R-22 (D) D) R-744

R-22 is a hydrochlorofluorocarbon (HCFC) that was commonly used in air conditioning systems and refrigeration. It contains chlorine, which can break down ozone molecules in the stratosphere, contributing to ozone depletion. Nowadays, many countries are phasing out the use of R-22 as part of efforts to protect the ozone layer. While R-32 and R-744 (also known as CO2) have lower ozone depletion potential, with R-32 being a hydrofluorocarbon (HFC), and R-717 (ammonia) being an ammonia-based refrigerant, it's crucial to select refrigerants that have minimal impact on both the ozone layer and contribute to climate change. Transitioning to more environmentally friendly alternatives is key for sustainable refrigeration solutions!