Montreal Protocol ozone – UGC NET Question

The Montreal Protocol on Substances that Deplete the Ozone Layer was agreed in 1987 and has successfully reduced the production of chlorofluorocarbons and related chemicals. It is widely regarded as one of the most effective environmental treaties. The stem mentions phasing out ozone depleting substances,which is the core objective of the Montreal Protocol. Therefore Option A is the correct answer.

Option A:
Montreal was chosen as the name because the original agreement was adopted in that city. The Protocol’s controls have been strengthened through subsequent amendments,supporting recovery of the ozone layer.

Option B:
The Kyoto Protocol is a climate agreement focusing on greenhouse gas emissions and does not primarily address ozone depleting substances,so it is not the treaty referred to in the stem.

Option C:
“Geneva Protocol” is not the main global agreement for phasing out ozone depleting substances. The well known treaty for this purpose is the Montreal Protocol.

Option D:
The Nagoya Protocol relates to biodiversity access and benefit sharing under the Convention on Biological Diversity,not to ozone depleting substances.