Question map
Not attempted Correct Incorrect ★ Bookmarked
Loading…
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
How others answered
Each bar shows the % of students who chose that option. Green bar = correct answer, blue outline = your choice.
Community Performance
Out of everyone who attempted this question.
64%
got it right
PROVENANCE & STUDY PATTERN
Guest preview
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
You're seeing a guest preview. The Verdict and first statement analysis are open. Login with Google to unlock all tabs.

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 analysis

This statement analysis shows book citations, web sources and indirect clues. The first statement (S1) is open for preview.

Login with Google to unlock all statements.

Statement analysis

This statement analysis shows book citations, web sources and indirect clues. The first statement (S1) is open for preview.

Login with Google to unlock all statements.

Statement analysis

This statement analysis shows book citations, web sources and indirect clues. The first statement (S1) is open for preview.

Login with Google to unlock all statements.

How to study

This tab shows concrete study steps: what to underline in books, how to map current affairs, and how to prepare for similar questions.

Login with Google to unlock study guidance.

Micro-concepts

Discover the small, exam-centric ideas hidden in this question and where they appear in your books and notes.

Login with Google to unlock micro-concepts.

The Vault

Access hidden traps, elimination shortcuts, and Mains connections that give you an edge on every question.

Login with Google to unlock The Vault.

✓ Thank you! We'll review this.

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?