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Home » UPSC Prelims Quiz » UPSC Prelims Quiz: September 26, 2025

UPSC Prelims Quiz: September 26, 2025

Q1. With reference to the Dugong Conservation Reserve in Palk Bay, consider the following statements:

1. It is India’s first marine conservation reserve notified under the Environment Protection Act, 1986.

2. The reserve harbours extensive seagrass meadows, which are among the most productive ecosystems for carbon sequestration.

Which of the statements given above is/are correct?

(a)

1 only

(b)

2 only

(c)

Both 1 and 2

(d)

Neither 1 nor 2

Explanation

Statement 1 – Incorrect: The Dugong Conservation Reserve in Palk Bay is indeed India’s first, but it was established under the Wildlife Protection Act, 1972, not the Environment Protection Act, 1986.

Statement 2 – Correct: The reserve harbours 12,250 hectares of seagrass meadows, which not only sustain Dugongs but also act as significant blue carbon sinks, making them highly productive ecosystems for carbon sequestration.

Answer: (b) 2 only
Q2. Match List I with List II and select the correct answer using the codes given below:
List I (Species/Reserve)List II (Characteristic/Recognition)
A. Dugong dugon1. Only strictly herbivorous marine mammal
B. Palk Bay Dugong Reserve2. Recognised as a global conservation model at IUCN 2025
C. Gulf of Mannar Biosphere Reserve3. First marine biosphere reserve in India
D. Olive Ridley Turtle4. Known for mass nesting at Gahirmatha coast

Codes:

(a)

A-1, B-2, C-3, D-4

(b)

A-2, B-1, C-3, D-4

(c)

A-1, B-3, C-2, D-4

(d)

A-4, B-2, C-1, D-3

Explanation

A-1: Dugong dugon, also called the “sea cow,” is the only strictly herbivorous marine mammal.

B-2: Palk Bay Dugong Conservation Reserve was recognised at IUCN 2025 as a global conservation model.

C-3: Gulf of Mannar Biosphere Reserve, established in 1989, is India’s first marine biosphere reserve.

D-4: Olive Ridley Turtle is famous for arribada (mass nesting) at Gahirmatha coast, Odisha.

Answer: (a) A-1, B-2, C-3, D-4
Q3. Which one of the following statements about Special and Differential Treatment (S&DT) under WTO is incorrect?
(a)

S&DT allows developing countries longer transition periods to implement WTO obligations.

(b)

The “Enabling Clause” (1979) legally permits non-reciprocity in trade concessions for developing countries.

(c)

A developing country that renounces future claims to S&DT automatically loses existing benefits already secured under earlier agreements.

(d)

Least-developed countries (LDCs) enjoy some exemptions / flexibilities beyond what is available to general developing countries.

Explanation

(a) is correct: Longer implementation periods are a core feature of S&DT.

(b) is correct: The Enabling Clause (1979) provides legal cover for differential treatment and non-reciprocity.

(d) is correct: LDCs have special flexibilities (e.g., extended transition in TRIPS, duty-free quota-free access, etc.).

(c) is incorrect: Giving up future claims to S&DT does not necessarily strip one of prior benefits already agreed; existing commitments remain intact until renegotiated or challenged.

Read More About Special And Differential Treatment
Answer: (c)
Q4. Assertion (A): China’s public announcement that it will no longer seek new S&DT is a signal to reposition itself as a more mature trade power in WTO talks.
Reason (R): Under WTO practice, any member can challenge the self-declared “developing country” status of another member.
Choose the correct option:
(a)

Both A and R are true, and R explains A.

(b)

A is true, R is false.

(c)

A is false, R is true.

(d)

Both A and R are false.

Explanation

A is true: Analysts interpret China’s decision as a diplomatic signal of willingness to assume greater obligations and reduce objections to its “developing country” status in trade negotiations.

R is also true: WTO does not accept self-designation as absolute; other members can contest a country’s claim to “developing” status.

R also helps explain A: By signaling that it no longer intends to assert developing status in future negotiations, China is preempting challenges and repositioning itself.

Answer: (a)
WTO and the Debate on Developing Country Status

The World Trade Organization (WTO) does not provide a formal definition of what constitutes a “developed” or “developing” country. Instead, it allows members to self-designate their status.

Contentious Practice of Self-Declaration:
Many countries opt to declare themselves as developing nations to gain access to special and differential treatment (S&DT) in trade rules. This practice has become controversial, as large economies such as China continue to claim developing country status despite their global economic influence.

Disputes and Challenges:
WTO members can contest another member’s self-designation. The U.S. and EU have frequently challenged China’s claim, leading to disputes and diplomatic pressure campaigns within the WTO framework.

Q5. Consider the following statements:

1. The WTO Agreement on Fisheries Subsidies came into force in September 2025.

2. Under this fisheries pact, developing countries are exempt from core disciplines on over-fished stocks permanently.

3. China’s decision to forego new S&DT claims is seen as helping reform of the WTO’s negotiating “special and differential treatments” regime.

Which of the statements is/are correct?

(a)

1 and 3 only

(b)

2 only

(c)

1 and 2 only

(d)

1, 2 and 3

Explanation

Statement 1 is correct: The Fisheries Subsidies Agreement formally entered into force on 15 September 2025.

Statement 2 is incorrect: Developing countries are not permanently exempt from all disciplines — there are transition phases, exceptions, and “special and differential treatment” modalities, but not blanket permanent exemptions.

Statement 3 is correct: Observers view China’s move as facilitating internal WTO reform of how S&DT is applied, by reducing objections to its developing status, and helping a new consensus.

Answer: (a) 1 and 3 only
Q6. Consider the following statements regarding the definition of “urban” in India’s Census:

1. A “Census Town” must have at least 75% of its total working population engaged in non-agricultural activities.

2. Urban local bodies in India enjoy more autonomy and financial control compared to Panchayati Raj institutions.

Which of the above statement(s) is/are correct?

(a)

1 only

(b)

2 only

(c)

Both 1 and 2

(d)

Neither 1 nor 2

Explanation

S1 – Incorrect: The Census criterion is that at least 75% of the male main working population must be engaged in non-agricultural activities, not the total workforce.

S2 – Correct: Urban local bodies have greater autonomy and fiscal powers, while Panchayati Raj bodies are more dependent on centrally designed schemes.

Answer: (b) 2 only
Q7. With reference to the Degree of Urbanization (DEGURBA) method, consider the following statements:

1. It was endorsed by the United Nations Statistical Commission to create a harmonized approach to defining “urban.”

2. India has used this method in the 2011 Census and will continue with it in the 2027 Census to define “urban areas.”

Which of the above statements is/are correct?

(a)

1 only

(b)

2 only

(c)

Both 1 and 2

(d)

Neither 1 nor 2

Explanation

Statement 1 — True: The UN Statistical Commission endorsed the Degree of Urbanization (DEGURBA) in March 2020 to harmonize comparisons of cities, towns, and rural areas globally.

Statement 2 — False: India did not use DEGURBA in 2011. The Census 2011 definition relied on statutory towns and census towns (population ≥5,000; ≥75% male main workers in non-agriculture; density ≥400/sq km). The Registrar General of India has indicated that the 2027 Census will retain the 2011 definition, i.e., still not adopt DEGURBA.

Answer: (a) 1 only
Degree of Urbanisation (DEGURBA) System

The Degree of Urbanisation (DEGURBA) is an internationally harmonized method that classifies the entire territory of a country along an urban–rural continuum.

Development and Endorsement

  • Jointly developed by six international organizations: European Union, FAO, ILO, OECD, UN-Habitat, and the World Bank.
  • Endorsed by the UN Statistical Commission in 2020, making it a globally recognized system.

Basis of Classification

  • Population size
  • Population density
  • Contiguity of 1 km² population grid cells

Key Advantage

Unlike older methods based on local administrative units (which differ in size and shape across countries), DEGURBA uses a grid-based approach. This ensures consistency and comparability of urban–rural statistics between nations.

Q8. With reference to the major lakes of India, consider the following pairs:

1. Chilika Lake – Largest brackish water lagoon in Asia

2. Pulicat Lake – Largest brackish water lake in India

3. Kolleru Lake – Freshwater to brackish gradient, Ramsar wetland

4. Ashtamudi Lake – Second largest brackish lake in Kerala

How many of the above pairs are correctly matched?

(a)

Only one

(b)

Only two

(c)

Only three

(d)

All four

Explanation

Pair 1 – Correct: Chilika (Odisha) is Asia’s largest brackish water lagoon and the world’s second largest coastal lagoon.

Pair 2 – Incorrect: Pulicat is India’s second largest brackish water lake, not the largest.

Pair 3 – Correct: Kolleru (Andhra Pradesh) indeed shows a freshwater to brackish gradient and is a Ramsar wetland.

Pair 4 – Correct: Ashtamudi (Kerala) is the second largest brackish lake in Kerala.

Answer: (c) Only three
Q9. With reference to the Baltic Sea, consider the following statements:

1. It is the youngest sea on Earth, formed about 10,000–15,000 years ago after the last Ice Age.

2. It is the largest expanse of brackish water in the world and is semi-enclosed.

3. The Kiel Canal in Denmark links it to the North Sea.

Which of the above statements is/are correct?

(a)

1 and 2 only

(b)

2 and 3 only

(c)

1 and 3 only

(d)

1, 2 and 3

Explanation

S1 – Correct: The Baltic Sea is geologically very young (10,000–15,000 years old), formed after glacial retreat.

S2 – Correct: It is the world’s largest brackish water body, shallow and semi-enclosed.

S3 – Incorrect: The Kiel Canal is in Germany, not Denmark, and connects the Baltic Sea to the North Sea.

Answer: (a) 1 and 2 only
Q10. With reference to Second-Generation (2G) ethanol, consider the following statements:

1. It is produced mainly from edible crops like sugarcane and maize.

2. In its production process, no enzymatic hydrolysis step is involved.

3. Unlike First-Generation ethanol, it does not compete with food crops, thereby supporting food security.

Which of the statements given above is/are correct?

(a)

1 only

(b)

2 only

(c)

3 only

(d)

1, 2 and 3

Explanation

Statement 1 – Incorrect: Second-generation (2G) ethanol is produced from non-food biomass, such as agricultural residues (corn stover, sugarcane bagasse) and energy crops. First-generation ethanol, on the other hand, is made from edible crops like sugarcane and maize.

Statement 2 – Incorrect: 2G ethanol production typically involves an enzymatic hydrolysis step. Lignocellulosic biomass needs to be broken down into fermentable sugars using enzymes like cellulases before fermentation.

Statement 3 – Correct: 2G ethanol avoids competition with food crops for land and resources, thereby supporting food security.

Answer: (c) 3 only