Hydrochlorofluorocarbons (HCFCs), replacement for chlorofluorocabons (CFCs), have to be phased out completely by the year

Correct option is B

Hydrochlorofluorocarbons (HCFCs) are transitional compounds used as replacements for chlorofluorocarbons (CFCs), which are harmful to the ozone layer. However, HCFCs themselves have ozone-depleting potential, albeit lower than that of CFCs.
The complete phase-out of HCFCs is guided by the Montreal Protocol on Substances that Deplete the Ozone Layer, a global treaty signed in 1987.
1. Developed Countries:
· HCFCs are already largely phased out in developed countries, with strict deadlines implemented much earlier.
2. Developing Countries:
· The protocol allows developing countries a grace period to phase out HCFCs gradually.
· Complete phase-out for developing countries is set for 2030.
This timeline ensures that all countries transition to safer alternatives, such as hydrofluorocarbons (HFCs) or other eco-friendly technologies.
Information Booster:
1. Montreal Protocol:
· A landmark environmental treaty aimed at protecting the ozone layer by phasing out ozone-depleting substances (ODS).
· Ratified by 198 parties, making it one of the most universally accepted treaties.
2. HCFCs Phase-Out Schedule:
· Developed Countries: Major reduction by 2020; complete elimination earlier.
· Developing Countries: Full phase-out by 2030.
3. Alternatives to HCFCs:
· Hydrofluorocarbons (HFCs): Non-ozone-depleting but have a high global warming potential.
· Natural refrigerants: Ammonia, carbon dioxide, and hydrocarbons are eco-friendly options.
4. HCFCs have lower ozone-depleting potential (ODP) than CFCs but are still harmful and contribute to climate change.