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Q40 (IAS/2015) Environment & Ecology › Climate Change & Global Initiatives › Multilateral environmental agreements Official Key

Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances?

Result
Your answer:  ·  Correct: B
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. [1] Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
  2. [2] Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
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Don’t just practise – reverse-engineer the question. This panel shows where this PYQ came from (books / web), how the examiner broke it into hidden statements, and which nearby micro-concepts you were supposed to learn from it. Treat it like an autopsy of the question: what might have triggered it, which exact lines in the book matter, and what linked ideas you should carry forward to future questions.
Q. Which one of the following is associated with the issue of control and phasing out of the use of ozone-depleting substances? [A] Bretton…
At a glance
Origin: Books + Current Affairs Fairness: Low / Borderline fairness Books / CA: 2.5/10 · 7.5/10

This 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.

How this question is built

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?
Origin: Direct from books Fairness: Straightforward Book-answerable
From standard books
Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
Presence: 5/5
“Te 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. Te Treaty was opened for signature on 16th September, 1987 and entered into force on 1st January, 1989. Its frst meeting was held at Helsinki in May, 1989. Since then, it has undergone seven revisions in London (1990), Nairobi (1991), Copenhagen (1992), Bangkok (1993), Vienna (1995), Montreal (1997), and Beijing (1999). It was believed that if this international agreement is adhered to, the ozone layer would recover by 2005.”
Why this source?
  • 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.
Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
Presence: 5/5
“• 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. • The treaty was opened for signature on September 16, 1987 and entered into force on January 1, 1989, followed by a first meeting in Helsinki in May 1989.”
Why this source?
  • 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.
Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > Table 5.1 (Contd.) > p. 12
Presence: 4/5
“• MEAs: 5. Vienna Convention for the protection of Ozone Layer; Year: 1985; Entry into Force: 22.9.1988; Date of Ratifcation: 18.3.1991; Issues covered: Protection of ozone layer. • MEAs: 6. Montreal Protocol; Year: 1987; Entry into Force: 1.1.1989; Date of Ratifcation: 19.6.1992; Issues covered: Protection of atmospheric ozone • MEAs: 7. Basel Convention; Year: 1989; Entry into Force: 5.5.1992; Date of Ratifcation: 24.6.1992; Issues covered: Regulation of trans-boundary movements of hazardous waste and their disposal. • MEAs: 8. UN Framework Convention on Climatic Change (UNFCCC); Year: 1992; Entry into Force: 21.3.1994; Date of Ratifcation: 1.11.1993; Issues covered: Change in Earth Climate System due to anthropogenic interference. • MEAs: 9.”
Why this source?
  • 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.
Statement 2
Is the Kyoto Protocol associated with the control and phasing out of the use of ozone-depleting substances?
Origin: Web / Current Affairs Fairness: CA heavy Web-answerable

Web source
Presence: 5/5
"The Protocol has a financial mechanism, which includes the Multilateral Fund, that covers the incremental costs incurred by developing countries67 in complying with the control measures for the phase-out of ozone-depleting substances."
Why this source?
  • 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.
Web source
Presence: 4/5
"the Kyoto Protocol requires Parties listed in Annex I of the Framework Convention on Climate Change to ensure that their aggregate anthropogenic carbon dioxide equivalent emissions"
Why this source?
  • 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.

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Montreal Protocol > p. 409
Strength: 5/5
“• 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. • The treaty was opened for signature on September 16, 1987 and entered into force on January 1, 1989, followed by a first meeting in Helsinki in May 1989.”
Why relevant

Defines the Montreal Protocol as the treaty specifically designed to reduce production and consumption of ozone-depleting substances to protect the ozone layer.

How to extend

A student can contrast this explicit ODS mandate of Montreal with the mandate of Kyoto to infer which treaty is relevant to ODS control.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
Strength: 5/5
“Te 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. Te Treaty was opened for signature on 16th September, 1987 and entered into force on 1st January, 1989. Its frst meeting was held at Helsinki in May, 1989. Since then, it has undergone seven revisions in London (1990), Nairobi (1991), Copenhagen (1992), Bangkok (1993), Vienna (1995), Montreal (1997), and Beijing (1999). It was believed that if this international agreement is adhered to, the ozone layer would recover by 2005.”
Why relevant

States the Montreal Protocol phases out production of substances believed responsible for ozone depletion and lists its revisions focused on ozone protection.

How to extend

Use this example of an ODS-focused treaty to test whether Kyoto contains similar phase-out obligations (if not mentioned, likely not ODS-focused).

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 24: Climate Change Organizations > 24.2. KYOTO PROTOCOL: COp-3. > p. 324
Strength: 4/5
“• By rgg5, countries realized that emission reductions provisions in the Convention were inadequate. They launched negotiations to strengthen the global response to climate change, and, two years later, adopted the Kyoto Protocol.• The Kyoto Protocol was adopted in Kyoto, Japan, on 11 December 1997. Due to a complex ratification process, it entered into force on 16 February 2005.• In short, the Kyoto Protocol is what 'operationalizes' the Convention. gas emissions based on the principles of the Convention. r The major distinction between the protocol and the Convention is that while the Convention encouraged industrialized countries to stabiiize GHG emissions, the Protocol commits them to do so.”
Why relevant

Describes the Kyoto Protocol as the instrument that operationalizes the UNFCCC by committing industrialized countries to cut greenhouse gas emissions.

How to extend

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).

FUNDAMENTALS OF PHYSICAL GEOGRAPHY, Geography Class XI (NCERT 2025 ed.) > Chapter 11: World Climate and Climate Change > Greenhouse Gases(GHGs) > p. 96
Strength: 4/5
“International efforts have been initiated for reducing the emission of GHGs into the atmosphere. The most important one is the Kyoto protocol proclaimed in 1997. This protocol went into effect in 2005, ratified by 141 nations. Kyoto protocol bounds the 35 industrialised countries to reduce their emissions by the year 2012 to 5 per cent less than the levels prevalent in the year 1990. The increasing trend in the concentration of GHGs in the atmosphere may, in the long run, warm up the earth. Once the global warming sets in, it will be difficult to reverse it. The effect of global warming may not be uniform everywhere.”
Why relevant

Labels the Kyoto Protocol as the major international effort to reduce greenhouse gas (GHG) emissions with quantified targets for industrialized countries.

How to extend

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).

Science ,Class VIII . NCERT(Revised ed 2025) > Chapter 13: Our Home: Earth, a Unique Life Sustaining Planet > Ever heard of ... > p. 224
Strength: 4/5
“Countries around the world have made global agreements to protect the environment. The Montreal Protocol (1987) helped reduce harmful chemicals like Chlorofluorocarbons (CFCs), allowing the ozone layer to slowly recover. The Earth Summit (1992) led to international efforts on climate change and biodiversity. Later, the Kyoto Protocol (2005) and Paris Agreement (2015) committed countries to reduce greenhouse gas emissions. The Paris Agreement set a goal to limit global warming to below 1.5 °C, but as of 2025, the world is not on track to meet that goal. Much more action is needed to avoid any more adverse effects of climate change.”
Why relevant

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.

How to extend

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.

Statement 3
Is the Nagoya Protocol associated with the control and phasing out of the use of ozone-depleting substances?
Origin: Web / Current Affairs Fairness: CA heavy Web-answerable

Web source
Presence: 5/5
"The Protocol has a financial mechanism, which includes the Multilateral Fund, that covers the incremental costs incurred by developing countries in complying with the control measures for the phase-out of ozone-depleting substances."
Why this source?
  • 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.
Web source
Presence: 4/5
"Extent to which both investment and non-investment projects approved under the Multilateral Fund have contributed to phasing out ozone-depleting substances in parties operating under paragraph 1 of Article 5 in accordance with Montreal Protocol compliance targets;"
Why this source?
  • 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.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > nagoya Protocol. > p. 10
Strength: 5/5
“Te 10th Conference of parties to the Convention on Biological Diversity was held at Nagoya in October, 2010. Delegates from more than 100 countries agreed on Nagoya Protocol on Access to Genetic Resources and fair and equitable sharing of benefts arising from their utilisation.”
Why relevant

Explicitly states the Nagoya Protocol is about access to genetic resources and fair/equitable sharing of benefits arising from their utilisation.

How to extend

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.

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > Ianportance > p. 393
Strength: 5/5
“The Nagoya Protocol will create greater legal certainty and transparency for both providers and users of genetic resources by: • Establishing more predictable conditions for access to genetic resources. • Helping to ensure benefit sharing when genetic resources leave the contracting party providing the genetic resources. By helping to ensure benefit sharing, the Nagoya Protocol creates incentives to conserve and sustainably use genetic resources, and therefore enhances the contribution of biodiversity to development and human well-being.”
Why relevant

Describes the Nagoya Protocol creating legal certainty and incentives to conserve and sustainably use genetic resources (focus on biodiversity, benefit sharing).

How to extend

Combine this purpose with knowledge of environmental treaty topics to separate biodiversity/access regimes from ozone-protection regimes.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
Strength: 5/5
“Te 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. Te Treaty was opened for signature on 16th September, 1987 and entered into force on 1st January, 1989. Its frst meeting was held at Helsinki in May, 1989. Since then, it has undergone seven revisions in London (1990), Nairobi (1991), Copenhagen (1992), Bangkok (1993), Vienna (1995), Montreal (1997), and Beijing (1999). It was believed that if this international agreement is adhered to, the ozone layer would recover by 2005.”
Why relevant

Defines the Montreal Protocol as the international treaty designed to protect the ozone layer by phasing out production of many ozone-depleting substances.

How to extend

Use this to identify which protocol actually addresses ODSs, allowing a student to contrast Montreal with Nagoya and test the statement.

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > 28.20. KIGALI AGREEMENT > p. 409
Strength: 4/5
“• The Twenty-Eighth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer held in Kigali, Rwanda amended the Montreal Protocol to phase out Hydrofluorocarbons (HFCs). • Chlorofluorocarbons (CFCs) were discontinued under the Montreal Protocol when scientists realised they were destroying the ozone layer. All Rights Reserved. No part of this material may be reproduced in any form or by any means, without permission in writing. Full”
Why relevant

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.

How to extend

A student could extend this to map which named protocols/amendments deal with atmospheric/ODS issues versus those dealing with biodiversity (Nagoya).

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 19: Ozone Depletion > 19.2. THE CIUOIEI EPLETING . SUBSTANCE$ RULES > p. 272
Strength: 3/5
“19.2. THE CIUO}IE I}EPLETING . SUBSTANCE$ RUL3S The Ozgne Depleting Subetances {Aegulation and ControllRules, 2000 under the Environment (Pnrtection)Act, in July 2000. These Rules set the deadlines for phasing out of various ODSs, besides regulating production, trade import and export of ODSs and the product containing ODS. u[.2" /'iZ"x-rj 6ffi,V;,lE$"il • The Ozone Depleting Substances (Regulation and Control) Rule, 2000 were amended in 2003, 2004 and 2005 to facilitate implementation of ODS phase-out at enterprises in various sectors. • These Rules prohibit the use of CFCs in manufacturing various products beyond January 1, 2003 except in metered dose inhalers and for other medical purposes. • Similarly, use of halons is prohibited after January 2005 except for essential use.”
Why relevant

Describes national rules and deadlines for phasing out various ozone-depleting substances, showing domestic implementation of ozone-related regulation linked to the ODS regime.

How to extend

A student could infer there is an established ODS regulatory regime (linked to Montreal) distinct from protocols about genetic resources like Nagoya.

Statement 4
Is the Bretton Woods Conference associated with the control and phasing out of the use of ozone-depleting substances?
Origin: Web / Current Affairs Fairness: CA heavy Web-answerable

Web source
Presence: 5/5
"Under the Montreal Protocol, the concept of incremental cost funding has been cost-effective in mobilizing funds to phase out the production and consumption of ozone-depleting substances."
Why this source?
  • 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.
Web source
Presence: 4/5
"Challenges facing parties operating under paragraph 1 of Article 5 of the Montreal Protocol in phasing out remaining ozone-depleting substances such as methyl bromide and maintaining the phase-outs already achieved."
Why this source?
  • 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.
Web source
Presence: 4/5
"Recognizing also that the successful phase-out of most ozone-depleting substances by parties is largely attributable to the establishment and implementation of licensing systems to control the import and export of ozone-depleting substances,"
Why this source?
  • 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.

Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 18: International Economic Institutions > CHAPTER SUMMARY > p. 552
Strength: 5/5
“• Bretton Woods Conference held in 1944 in the US attended by delegates from 44 allied nations - to establish the international monetary and financial order after the Second World War - also known as United Nations Monetary and Financial Conference - conference resulted in establishment of IBRD and IMF”
Why relevant

States the Bretton Woods Conference (1944) created IMF and IBRD and was about post‑war international monetary and financial order.

How to extend

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.

Indian Economy, Nitin Singhania .(ed 2nd 2021-22) > Chapter 18: International Economic Institutions > BRETTON WOODS INSTITUTIONS > p. 512
Strength: 5/5
“• International economic institutions are established by the solidarity of several countries. The members of such institutions are generally the sovereign governments.• The twin international economic institutions, the International Monetary Fund (IMF) and the International Bank for Reconstruction and Development (IBRD) (of World Bank Group), were established after the Bretton Woods conference held in 1944 in the United States. Hence, these two are also known as Bretton Woods Twins. Note: In the conference, the proposal was also floated to establish International Trade Organization (ITO), but it was not accepted.”
Why relevant

Reiterates Bretton Woods institutions (IMF, World Bank) and emphasizes economic/financial mandate of that conference.

How to extend

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.

Environment and Ecology, Majid Hussain (Access publishing 3rd ed.) > Chapter 5: Biodiversity and Legislations > thE montrEal Protocol. > p. 7
Strength: 5/5
“Te 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. Te Treaty was opened for signature on 16th September, 1987 and entered into force on 1st January, 1989. Its frst meeting was held at Helsinki in May, 1989. Since then, it has undergone seven revisions in London (1990), Nairobi (1991), Copenhagen (1992), Bangkok (1993), Vienna (1995), Montreal (1997), and Beijing (1999). It was believed that if this international agreement is adhered to, the ozone layer would recover by 2005.”
Why relevant

Describes the Montreal Protocol (opened for signature 1987) as the international treaty designed to phase out substances that deplete the ozone layer.

How to extend

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.

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 28: International Organisation and Conventions > 28.20. KIGALI AGREEMENT > p. 409
Strength: 4/5
“• The Twenty-Eighth Meeting of the Parties to the Montreal Protocol on Substances that Deplete the Ozone Layer held in Kigali, Rwanda amended the Montreal Protocol to phase out Hydrofluorocarbons (HFCs). • Chlorofluorocarbons (CFCs) were discontinued under the Montreal Protocol when scientists realised they were destroying the ozone layer. All Rights Reserved. No part of this material may be reproduced in any form or by any means, without permission in writing. Full”
Why relevant

Notes Kigali amendment to the Montreal Protocol phased out HFCs and that CFCs were discontinued under the Montreal Protocol.

How to extend

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.

Environment, Shankar IAS Acedemy .(ed 10th) > Chapter 19: Ozone Depletion > 19.2. THE CIUOIEI EPLETING . SUBSTANCE$ RULES > p. 272
Strength: 3/5
“19.2. THE CIUO}IE I}EPLETING . SUBSTANCE$ RUL3S The Ozgne Depleting Subetances {Aegulation and ControllRules, 2000 under the Environment (Pnrtection)Act, in July 2000. These Rules set the deadlines for phasing out of various ODSs, besides regulating production, trade import and export of ODSs and the product containing ODS. u[.2" /'iZ"x-rj 6ffi,V;,lE$"il • The Ozone Depleting Substances (Regulation and Control) Rule, 2000 were amended in 2003, 2004 and 2005 to facilitate implementation of ODS phase-out at enterprises in various sectors. • These Rules prohibit the use of CFCs in manufacturing various products beyond January 1, 2003 except in metered dose inhalers and for other medical purposes. • Similarly, use of halons is prohibited after January 2005 except for essential use.”
Why relevant

Shows national regulatory rules and timelines (India’s ODS Regulation and Control Rules, phase‑out deadlines) implementing ODS phase‑out under environmental law.

How to extend

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.

Pattern takeaway: UPSC consistently asks 1-2 questions matching a Protocol to its Primary Objective. The depth is usually shallow (Headline Purpose), but the options will always mix Climate, Biodiversity, and Pollution treaties to confuse you.
How you should have studied
  1. [THE VERDICT]: Sitter. Direct hit from Class VIII NCERT Science (p. 224) and Shankar IAS (Ch 28).
  2. [THE CONCEPTUAL TRIGGER]: International Environmental Conventions (The 'Who does What' matching list).
  3. [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).
  4. [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.
Concept hooks from this question
📌 Adjacent topic to master
S1
👉 Montreal Protocol: objective and timeline
💡 The insight

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.

📚 Reading List :
  • 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
🔗 Anchor: "Is the Montreal Protocol associated with the control and phasing out of the use ..."
📌 Adjacent topic to master
S1
👉 Ozone-depleting substances (CFCs, halons) and impacts
💡 The insight

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.

📚 Reading List :
  • 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
🔗 Anchor: "Is the Montreal Protocol associated with the control and phasing out of the use ..."
📌 Adjacent topic to master
S1
👉 Multilateral Environmental Agreements (MEAs) and amendments
💡 The insight

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.

📚 Reading List :
  • 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
🔗 Anchor: "Is the Montreal Protocol associated with the control and phasing out of the use ..."
📌 Adjacent topic to master
S2
👉 Montreal Protocol — Ozone-depleting substances & CFC phase-out
💡 The insight

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.

📚 Reading List :
  • 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
🔗 Anchor: "Is the Kyoto Protocol associated with the control and phasing out of the use of ..."
📌 Adjacent topic to master
S2
👉 Kyoto Protocol — Greenhouse gases and binding targets for developed countries
💡 The insight

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.

📚 Reading List :
  • 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
🔗 Anchor: "Is the Kyoto Protocol associated with the control and phasing out of the use of ..."
📌 Adjacent topic to master
S2
👉 Policy distinction: Montreal Protocol vs Kyoto Protocol
💡 The insight

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).

📚 Reading List :
  • 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
🔗 Anchor: "Is the Kyoto Protocol associated with the control and phasing out of the use of ..."
📌 Adjacent topic to master
S3
👉 Montreal Protocol and Ozone-Depleting Substances
💡 The insight

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.

📚 Reading List :
  • 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
🔗 Anchor: "Is the Nagoya Protocol associated with the control and phasing out of the use of..."
🌑 The Hidden Trap

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.

⚡ Elimination Cheat Code

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.

🔗 Mains Connection

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.

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SIMILAR QUESTIONS

CDS-I · 2025 · Q94 Relevance score: 1.36

The Kyoto Protocol specifically relates to which one among the following issues ?

IAS · 2012 · Q42 Relevance score: -0.99

Consider the following statements : Chlorofluorocarbons, known as ozone-depleting substances, are used 1. in the production of plastic foams 2. in the production of tubeless tyres 3. in cleaning certain electronic components 4. as pressurizing agents in aerosol cans Which of the statements given above is/are correct?

IAS · 2005 · Q121 Relevance score: -3.92

Consider the following statements: 1. Kyoto Protocol came into force in the year 2005. 2. Kyoto Protocol deals primarily with the depletion of the Ozone layer. 3. Methane as a greenhouse gas is more harmful than carbon dioxide. Which of the statements is/are correct?

CAPF · 2019 · Q77 Relevance score: -4.51

Which one of the following is the main objective of Vienna Convention and Montreal Protocol?