Question map
Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?
Explanation
The Montreal Protocol was about the substances that deplete the ozone layer of the stratosphere. It is an international treaty, designed to protect the ozone layer, by phasing out the production of numerous substances believed to be responsible for ozone depletion.[1] The Treaty was opened for signature on 16th September, 1987 and entered into force on 1st January, 1989.[1] The Montreal Protocol on Substances that Deplete the Ozone Layer was designed to reduce the production and consumption of ozone depleting substances in order to reduce their abundance in the atmosphere, and thereby protect the earth's fragile ozone layer.[2]
The other options are incorrect: the Bretton Woods Conference (1944) dealt with international monetary and financial order, the Kyoto Protocol addresses climate change and greenhouse gas emissions, and the Nagoya Protocol concerns access to genetic resources and benefit-sharing under the Convention on Biological Diversity. Only the Montreal Protocol is specifically designed to control and phase out ozone-depleting substances.
Sources- [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
- [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
PROVENANCE & STUDY PATTERN
Full viewThis is an absolute 'Sitter' question. It represents the baseline knowledge required for the Environment section. If you get this wrong, it indicates a gap in the fundamental 'Conventions and Protocols' chapter of standard texts like Shankar IAS or NCERT.
This question can be broken into the following sub-statements. Tap a statement sentence to jump into its detailed analysis.
- Statement 1: Is the Montreal Protocol associated with the control and phasing out of the use of ozone-depleting substances?
- Statement 2: Is the Kyoto Protocol associated with the control and phasing out of the use of ozone-depleting substances?
- Statement 3: Is the Nagoya Protocol associated with the control and phasing out of the use of ozone-depleting substances?
- Statement 4: Is the Bretton Woods Conference associated with the control and phasing out of the use of ozone-depleting substances?
- Explicitly states the Montreal Protocol was designed to protect the ozone layer by phasing out production of substances believed responsible for ozone depletion.
- Provides treaty context (opening and entry-into-force dates) and notes successive revisions, indicating a treaty focused on controlling ODS.
- Names the instrument as 'The Montreal Protocol on Substances that Deplete the Ozone Layer' and says it was designed to reduce production and consumption of ozone-depleting substances.
- Directly links the treaty's purpose to reducing ODS abundance to protect the ozone layer.
- Lists the Montreal Protocol among multilateral environmental agreements with the issue covered as 'Protection of atmospheric ozone', supporting its role on ozone/ODS control.
- Situates the Protocol within the MEA framework (alongside Vienna Convention), reinforcing its policy purpose.
- Directly states that the Protocol (Montreal Protocol) identifies and controls ozone-depleting substances and binds parties to emission-reduction/phase-out obligations.
- States there is a financial mechanism (Multilateral Fund) to help developing countries comply with phase-out control measures.
- Shows the Kyoto Protocol is about limiting anthropogenic greenhouse gas (carbon dioxide-equivalent) emissions, not ozone-depleting substances.
- Implies distinct roles: Montreal Protocol addresses ozone-depleting substances, Kyoto addresses greenhouse gases.
Defines the Montreal Protocol as the treaty specifically designed to reduce production and consumption of ozone-depleting substances to protect the ozone layer.
A student can contrast this explicit ODS mandate of Montreal with the mandate of Kyoto to infer which treaty is relevant to ODS control.
States the Montreal Protocol phases out production of substances believed responsible for ozone depletion and lists its revisions focused on ozone protection.
Use this example of an ODS-focused treaty to test whether Kyoto contains similar phase-out obligations (if not mentioned, likely not ODS-focused).
Describes the Kyoto Protocol as the instrument that operationalizes the UNFCCC by committing industrialized countries to cut greenhouse gas emissions.
Since Kyoto is explicitly about greenhouse gases, a student can infer Kyoto's primary scope differs from ozone-depleting substances and check for explicit ODS references (absence would be telling).
Labels the Kyoto Protocol as the major international effort to reduce greenhouse gas (GHG) emissions with quantified targets for industrialized countries.
A student can use this clear GHG focus to argue Kyoto's subject-matter is climate gases not ODS, and then verify which treaty addresses ODS (i.e., Montreal).
Separately lists Montreal (1987) as reducing CFCs (ODS) and Kyoto (2005 entry) as committing countries to reduce greenhouse gas emissions, placing the two treaties in different issue-areas.
A student could map treaty purposes from this snippet onto a simple classification (ozone protection vs climate change) to judge whether Kyoto is likely associated with ODS phase-out.
- Explicitly states that the Protocol (context: Montreal Protocol) binds parties to emission-reduction obligations and has a financial mechanism for the phase-out of ozone-depleting substances.
- Shows that control and phase-out are handled under this Protocol and its Multilateral Fund, not by another instrument named in the statement.
- Describes Multilateral Fund projects contributing to 'phasing out ozone-depleting substances' in parties, tying phase-out activities to the Montreal Protocol framework.
- Reinforces that the control and phased elimination of these substances are part of Montreal Protocol implementation.
Explicitly states the Nagoya Protocol is about access to genetic resources and fair/equitable sharing of benefits arising from their utilisation.
A student could use this to infer Nagoya's subject-matter (biodiversity/genetic resources) and thus judge it unlikely to be the treaty that phases out ozone-depleting substances.
Describes the Nagoya Protocol creating legal certainty and incentives to conserve and sustainably use genetic resources (focus on biodiversity, benefit sharing).
Combine this purpose with knowledge of environmental treaty topics to separate biodiversity/access regimes from ozone-protection regimes.
Defines the Montreal Protocol as the international treaty designed to protect the ozone layer by phasing out production of many ozone-depleting substances.
Use this to identify which protocol actually addresses ODSs, allowing a student to contrast Montreal with Nagoya and test the statement.
Notes that the Kigali amendment to the Montreal Protocol amended it to phase out HFCs, reinforcing Montreal as the instrument for phasing out specific atmospheric substances.
A student could extend this to map which named protocols/amendments deal with atmospheric/ODS issues versus those dealing with biodiversity (Nagoya).
Describes national rules and deadlines for phasing out various ozone-depleting substances, showing domestic implementation of ozone-related regulation linked to the ODS regime.
A student could infer there is an established ODS regulatory regime (linked to Montreal) distinct from protocols about genetic resources like Nagoya.
- Explicitly identifies the Montreal Protocol as the instrument that binds parties to emission-reduction obligations for the phase-out of ozone-depleting substances.
- Shows a dedicated financial mechanism (Multilateral Fund) to cover costs of complying with phase-out measures — indicating an alternate, specific governance framework, not Bretton Woods.
- Discusses parties' obligations and decisions under the Montreal Protocol relating to phasing out specific ozone-depleting substances.
- Focuses attention on the Montreal Protocol meetings and decisions as the locus of control and phase-out actions.
- Attributes successful phase-out of most ozone-depleting substances to licensing systems implemented under the Protocol framework.
- Indicates practical control measures (licensing/import-export control) under the Montreal Protocol rather than any Bretton Woods mechanism.
States the Bretton Woods Conference (1944) created IMF and IBRD and was about post‑war international monetary and financial order.
A student could contrast the 1944 monetary/financial focus and date with the known timeline of ozone policy to judge whether Bretton Woods was the forum for ODS control.
Reiterates Bretton Woods institutions (IMF, World Bank) and emphasizes economic/financial mandate of that conference.
Use this institutional mandate to infer that environmental treaty activity (like ODS control) would more likely arise from environmental conventions rather than Bretton Woods economic institutions.
Describes the Montreal Protocol (opened for signature 1987) as the international treaty designed to phase out substances that deplete the ozone layer.
Compare the Montreal Protocol’s explicit ozone focus and 1987 date to Bretton Woods’ 1944 date to suspect different origins and forums for ODS phase‑out.
Notes Kigali amendment to the Montreal Protocol phased out HFCs and that CFCs were discontinued under the Montreal Protocol.
Use this example of successive ozone agreements/amendments to show that ODS control is handled by the Montreal Protocol process, not by Bretton Woods institutions.
Shows national regulatory rules and timelines (India’s ODS Regulation and Control Rules, phase‑out deadlines) implementing ODS phase‑out under environmental law.
A student could extend this to note that ODS phase‑out occurs via environmental treaties and national regulations, supporting the idea that a monetary conference would not be the controlling forum.
- [THE VERDICT]: Sitter. Direct hit from Class VIII NCERT Science (p. 224) and Shankar IAS (Ch 28).
- [THE CONCEPTUAL TRIGGER]: International Environmental Conventions (The 'Who does What' matching list).
- [THE HORIZONTAL EXPANSION]: Memorize the 'Protocol-Target' pairs: Montreal (Ozone/CFCs), Kyoto (GHGs), Nagoya (Genetic Resources/ABS), Cartagena (Biosafety/LMOs), Basel (Hazardous Waste), Rotterdam (Chemicals), Stockholm (POPs), Minamata (Mercury).
- [THE STRATEGIC METACOGNITION]: Create a 'Confusion Matrix' for treaties. UPSC loves swapping objectives (e.g., claiming Kyoto is for Ozone). Focus on the specific 'Target Substance' for each treaty.
References explicitly identify the Protocol as aimed at phasing out substances that deplete the ozone layer and give treaty dates and revision history.
High-yield for UPSC: questions often ask about international environmental treaties, their aims, timelines and amendment processes. Connects to environment governance, international law and implementation topics; learn key treaties, objectives, dates and major amendments for comparative questions.
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
Evidence names CFCs/halons and describes their role in stratospheric ozone depletion and health/UV impacts—these are the substances targeted by the Protocol.
Important for environment and ecology mains and prelims: links science (how ODS destroy ozone) to policy (regulation/phase-out). Master the major ODS, their effects, and regulatory responses to answer cause-impact-policy questions; use integrated notes combining references on science and legislation.
- Physical Geography by PMF IAS, Manjunath Thamminidi, PMF IAS (1st ed.) > Chapter 20: Earths Atmosphere > Ozonosphere > p. 276
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 6: Environmental Degradation and Management > ozone depletion > p. 12
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 19: Ozone Depletion > 19.2. THE CIUOIEI EPLETING . SUBSTANCE$ RULES > p. 272
References place the Montreal Protocol within MEAs (with Vienna Convention) and note multiple revisions/amendments, highlighting treaty evolution and implementation mechanisms.
Useful for polity/IR and environment papers: UPSC often asks about MEA architecture, amendment processes and national implementation. Studying MEA lists, purposes and amendment history helps answer questions on international cooperation and national regulatory responses.
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > Table 5.1 (Contd.) > p. 12
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
The Montreal Protocol is repeatedly described in the references as the treaty designed to reduce/phase out substances that deplete the ozone layer (e.g., CFCs).
High-yield for Environment questions: routinely asked in UPSC on ozone layer protection, treaty objectives, and amendments. It connects to topics on atmospheric chemistry (CFCs, halons), international environmental regimes, and national regulation implementation. Prepare by memorising the protocol's objective, key dates, major amendments, and typical examples of ODS.
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
- Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 13: Our Home: Earth, a Unique Life Sustaining Planet > Ever heard of ... > p. 224
The references show the Kyoto Protocol deals with greenhouse gas emission targets and mechanisms for climate change mitigation, not ODS phase-out.
Essential for climate-change polity/environment questions: tests differences between UNFCCC, Kyoto and later agreements. Connects to Common But Differentiated Responsibilities, CDM and market mechanisms. Study by noting Kyoto's purpose, key dates, targets, covered gases, and its distinction from ozone-related treaties.
- Contemporary World Politics, Textbook in political science for Class XII (NCERT 2025 ed.) > Chapter 6: Environment and Natural Resources > Common but Differentiated Responsibilities > p. 87
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 24: Climate Change Organizations > 24.2. KYOTO PROTOCOL: COp-3. > p. 324
- FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 11: World Climate and Climate Change > Greenhouse Gases(GHGs) > p. 96
The central confusion in the statement is a conflation of two separate international regimes; the references explicitly assign ozone-ODS control to Montreal and GHG limits to Kyoto.
Very useful for elimination-type MCQs and comparative mains/subsidiary answers. Helps answer 'which treaty deals with what' or 'compare objectives of international environmental agreements.' Prepare by making a concise comparison table (objective, gases/substances covered, parties' obligations, key dates, major amendments).
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 24: Climate Change Organizations > 24.2. KYOTO PROTOCOL: COp-3. > p. 324
- Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 13: Our Home: Earth, a Unique Life Sustaining Planet > Ever heard of ... > p. 224
The Montreal Protocol is explicitly described in the references as the treaty that phases out substances that deplete the ozone layer.
High-yield for environment questions: knowing that the Montreal Protocol (and its amendments like Kigali) targets ODS/phasing out is frequently tested. It connects to national implementation (regulations and phase-out timelines) and helps answer questions on treaty-specific mandates versus domestic rules. Prepare by linking treaty names to their subject-matter and key amendments.
- Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > 28.20. KIGALI AGREEMENT > p. 409
- Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 19: Ozone Depletion > 19.2. THE CIUOIEI EPLETING . SUBSTANCE$ RULES > p. 272
The Kigali Amendment (2016). While Montreal targets ODS (Ozone Depleting Substances), the Kigali Amendment targets HFCs (Hydrofluorocarbons). HFCs do NOT deplete ozone but are potent Greenhouse Gases. This unique crossover (Climate target under an Ozone treaty) is a future trap.
Use the 'Domain Sorting' Hack: Bretton Woods = Money (Economy). Kyoto = Carbon (Climate). Nagoya = Nature (Biodiversity). The only option left for 'Chemicals/Ozone' is Montreal. Mnemonic: **M**ontreal = **M**ending the Hole; **K**yoto = **K**arbon.
International Relations & Economy: The Montreal Protocol is unique because it uses 'Trade Sanctions' (banning ODS trade with non-parties) as a compliance tool. This success story is often cited in IR Mains answers as a model for enforcing future climate agreements.