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Climate Change

Environment · 10 Questions
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Question 1

With reference to Short-Lived Climate Pollutants (SLCPs), consider the following statements:

  1. Black carbon is an SLCP that warms the Earth by absorbing sunlight and accelerating the melting of snow and ice.
  2. Tropospheric ozone is a primary pollutant that is directly emitted from industrial smokestacks and vehicle exhausts.
  3. Hydrofluorocarbons (HFCs) are considered SLCPs because their atmospheric lifetime is generally much longer than that of Carbon Dioxide. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option A
Explanation:
Only one statement is correct
Statement 1 is correct: Black carbon (soot) absorbs sunlight, warming the atmosphere. When it falls on ice and snow, it darkens the surface, reducing albedo and accelerating melting.
Statement 2 is incorrect: Tropospheric ozone is a secondary pollutant. It is not emitted directly but forms when precursor gases (like NOx and VOCs) react in the presence of sunlight.
Statement 3 is incorrect: HFCs are considered SLCPs precisely because their atmospheric lifetime is relatively short (days to a few decades) compared to CO2 (which lasts centuries), even though their warming potential is high.
Question 2

Consider the following statements regarding Permafrost:

  1. The thawing of permafrost primarily releases carbon dioxide, with no significant release of methane possible due to frozen soil conditions.
  2. An increase in the albedo of the Earth's surface occurs as permafrost thaws and snow cover diminishes, which helps mitigate global warming.
  3. Permafrost is scientifically defined as ground that remains completely frozen for a minimum of ten consecutive years.

 How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option D
Explanation:
None of the statements are correct
Statement 1 is incorrect: Thawing permafrost releases massive amounts of both carbon dioxide and methane, depending on whether the thawing occurs in dry or waterlogged (anaerobic) conditions.
Statement 2 is incorrect: As snow/ice diminishes, the albedo (reflectivity) decreases, meaning the darker ground absorbs more heat. This amplifies warming, rather than mitigating it.
Statement 3 is incorrect: Permafrost is defined as ground (soil, rock, and included ice) that remains at or below 0°C for at least two consecutive years, not ten.
Question 3

With reference to the Carbon Border Adjustment Mechanism (CBAM), consider the following statements:

  1. It is designed to place a fair price on the carbon emitted during the production of carbon-intensive goods entering the European Union.
  2. A primary objective of CBAM is to prevent "carbon leakage," where companies move production to countries with less strict climate policies.
  3. Commodities initially covered under the mechanism include cement, iron and steel, aluminum, fertilizers, electricity, and hydrogen. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option C
Explanation:
All three statements are correct
Statement 1 is correct: CBAM is an EU tariff on carbon-intensive products entering the bloc, ensuring imported goods pay a carbon price equivalent to domestic EU goods.
Statement 2 is correct: It aims to prevent "carbon leakage"—the relocation of production from the EU to countries with weaker environmental regulations.
Statement 3 is correct: The initial phase of CBAM covers highly carbon-intensive sectors: cement, iron and steel, aluminum, fertilizers, electricity, and hydrogen.
Question 4

Consider the following statements regarding Ocean Acidification:

  1. It is primarily caused by the absorption of excess atmospheric sulfur dioxide by the world's oceans.
  2. An increase in ocean acidity leads to a higher concentration of carbonate ions, heavily benefiting marine calcifying organisms like corals.
  3. Ocean acidification increases the ability of oceans to absorb low-frequency sounds, making the marine environment significantly quieter.

 How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option D
Explanation:
None of the statements are correct
Statement 1 is incorrect: Ocean acidification is primarily caused by the ocean absorbing excess atmospheric Carbon Dioxide (CO2), forming carbonic acid, not sulfur dioxide.
Statement 2 is incorrect: Increased acidity leads to a lower concentration of carbonate ions. Calcifying organisms (corals, oysters) need carbonate to build their shells; fewer ions make this difficult or impossible.
Statement 3 is incorrect: Acidification actually decreases the ocean's ability to absorb low-frequency sounds. This means sound travels further, making the ocean noisier, which disorients marine mammals.
Question 5

With reference to the Coalition for Disaster Resilient Infrastructure (CDRI), consider the following statements:

  1. It was officially launched by the United Nations Environment Programme (UNEP) in 2015.
  2. Its primary goal is to promote the resilience of new and existing infrastructure systems to climate and disaster risks.
  3. The Secretariat of the CDRI is located in New Delhi, India. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option B
Explanation:
Only two statements are correct
Statement 1 is incorrect: The CDRI was launched by the Prime Minister of India during the UN Climate Action Summit in September 2019, not by UNEP in 2015.
Statement 2 is correct: The coalition functions as a global partnership to promote the resilience of infrastructure systems to climate and disaster risks.
Statement 3 is correct: The CDRI Secretariat is based in New Delhi, India.
Question 6

Consider the following statements regarding the principle of Common But Differentiated Responsibilities (CBDR):

  1. It acknowledges that all nations have a shared obligation to address environmental destruction but denies that they have equal responsibility.
  2. The principle was first formalized globally at the 1992 United Nations Conference on Environment and Development (Earth Summit).
  3. Under this principle, developing nations are mandated to contribute equally to international climate finance alongside developed nations. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option B
Explanation:
Only two statements are correct
Statement 1 is correct: CBDR establishes that all states are responsible for addressing global environmental destruction, but they are not equally responsible due to varying historical contributions and economic capacities.
Statement 2 is correct: The principle was formalized in Principle 7 of the Rio Declaration at the 1992 Earth Summit.
Statement 3 is incorrect: Under CBDR, developed nations (who historically emitted more and have greater wealth) bear the primary responsibility for providing international climate finance, not developing nations.
Question 7

 

  1. With reference to the 'LiFE' (Lifestyle for Environment) movement, consider the following statements:
  1. It is a global initiative proposed by India at the COP26 summit.
  2. The concept strongly advocates for a circular economy and mindful consumption rather than mindless and destructive utilization.
  3. It mandates strict legal and financial penalties for individuals exceeding their carbon footprint quota in G20 nations. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option B
Explanation:
Only two statements are correct
Statement 1 is correct: The concept of LiFE was introduced by the Prime Minister of India at COP26 in Glasgow in 2021.
Statement 2 is correct: It is a mass movement aimed at mobilizing individuals to adopt sustainable lifestyles, promoting mindful and deliberate utilization instead of mindless consumption.
Statement 3 is incorrect: LiFE is a behavioral change and awareness campaign. It does not impose legal or financial penalties on individuals.
Question 8

Consider the following statements regarding the Intergovernmental Panel on Climate Change (IPCC):

  1. The IPCC conducts its own primary scientific research and sets up global monitoring stations to track climate change.
  2. It was jointly established by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP).
  3. The Assessment Reports published by the IPCC are legally binding documents that dictate mandatory emission targets for member nations. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option A
Explanation:
Only one statement is correct
Statement 1 is incorrect: The IPCC does not conduct its own original scientific research or monitor climate data itself. It assesses and synthesizes published scientific literature.
Statement 2 is correct: It was established in 1988 by the WMO and UNEP to provide policymakers with regular scientific assessments.
Statement 3 is incorrect: IPCC reports are policy-relevant but policy-neutral. They do not dictate legally binding targets; they only provide the scientific foundation for governments to negotiate treaties (like the Paris Agreement).
Question 9

With reference to the Global Environment Facility (GEF), consider the following statements:

  1. The GEF serves as a financial mechanism for both the Minamata Convention on Mercury and the Stockholm Convention on Persistent Organic Pollutants.
  2. It provides grants and blended finance for projects related to biodiversity, climate change, and land degradation.
  3. Only Least Developed Countries (LDCs) are eligible to receive funding and grants from the GEF. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option B
Explanation:
Only two statements are correct
Statement 1 is correct: The GEF serves as a "financial mechanism" for five major conventions: the CBD (Biodiversity), UNFCCC (Climate), UNCCD (Desertification), Stockholm Convention (POPs), and Minamata Convention (Mercury).
Statement 2 is correct: It is a major multilateral trust fund providing grants for projects tackling these exact environmental issues.
Statement 3 is incorrect: Funding is available to developing countries and countries with economies in transition, not just Least Developed Countries (LDCs).
Question 10

Consider the following statements regarding Greenhouse Gases and Global Warming Potential (GWP):

  1. GWP measures how much energy the emissions of 1 ton of a gas will absorb over a given period, relative to the emissions of 1 ton of Carbon Dioxide.
  2. Nitrous oxide (N2O) has a significantly lower Global Warming Potential than Carbon Dioxide over a 100-year timescale.
  3. Sulfur hexafluoride (SF6), heavily used in the electrical power industry, possesses an extremely high Global Warming Potential. 

How many of the above statements are correct? 

  • A Only one statement is correct
  • B Only two statements are correct
  • C All three statements are correct
  • D None of the statements are correct
✓ Correct Answer: Option B
Explanation:
Only two statements are correct
Statement 1 is correct: GWP is the standard metric used to compare the warming impacts of different gases. CO2 is the baseline with a GWP of 1.
Statement 2 is incorrect: Nitrous oxide (N2O) has a GWP roughly 273 times higher than CO2 over a 100-year timescale.
Statement 3 is correct: SF6 is an extremely potent synthetic greenhouse gas used as an insulator in high-voltage electrical equipment. Its GWP is over 23,000 times that of CO2.

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