Question

Which of the following protocols did aim for reducing the emission of chlorofluorocarbons into the atmosphere?
(A) Montreal protocol
(B) Kyoto protocol
(C) Gothenburg protocol
(D) Geneva protocol

Answer 1

Hint: Several treaties have been signed and put into force by Different nations to fight against the deterioration of the natural environment on earth and save the suitable state of the planet for further generations. The effects range from the reduction of harmful gases to the prohibition of harmful substances used in warfare.

Complete answer:
Montreal protocol is the simpler name for "Montreal protocol on substances that deplete the Ozone layer" is the International treaty that aims for the protection of the Ozone layer by reducing the emission of chlorofluorocarbons into the atmosphere. It was signed on 26th August of 1987 and was made pursuant to the 1985 Vienna Convention for the Protection of the Ozone Layer.

Additional Information: Let us know more about the other treaty mentioned in the question:
Kyoto protocol: It is a treaty that commits state parties to reduce the emission of greenhouse gases that causes global warming. It extends the 1992 United Nations Framework Convention on Climate Change (UNFCCC) and was adopted in Kyoto, Japan on the 11th of December, 1997. This treaty, having 192 parties currently, entered into force later on 16th February of 2005.
Gothenburg protocol: It is the simpler name of the 1999 Gothenburg Protocol to Abate Acidification, Eutrophication, and Ground-level Ozone and is a multi-pollutant protocol to reduce acidification, Eutrophication, and ground-level ozone by reducing the emission of sulfur dioxide, nitrogen oxides, volatile organic compounds, and ammonia. This protocol was ratified by 26 parties.
Geneva protocol: The simpler name of the Protocol for the Prohibition of the Use in War of Asphyxiating, Poisonous or other Gases, and of Bacteriological Methods of Warfare that prohibits the use of chemical as well as biological weapons in international armed conflicts. It was signed in Geneva on the 17th of June in 1925 and entered into force later on 8 February, 1928.
So, the correct answer is “(A) Montreal protocol”.

Note: The Montreal Protocol was put into force on 26th August 1989. After the Montreal protocol came into effect, the concentration of CFCs and related ozone-depleting substances in the atmosphere have decreased. Halon concentration is still increasing but the rate of increase has been slowed down and their presence is expected to decline by 2020.