Daily UPSC Prelims Quiz (October 25, 2026): 5 High-Yield MCQs & Explanations

Daily UPSC Prelims Quiz (October 25, 2026): 5 High-Yield MCQs & Explanations

Daily UPSC Prelims Quiz: 5 High-Yield Questions with Detailed Explanations (October 25, 2026)

Test your knowledge with today's UPSC Prelims practice questions derived from today's top newspaper editorials. Attempt each question before reading the explanation and trap alerts.

Question 1: Constitutional Safeguards and Supreme Court Reservation Rulings

Context / Statement: Consider the following statements regarding the constitutional framework of reservations and recent judicial pronouncements in India:

  1. States possess the legislative and executive competence to sub-classify Scheduled Castes (SCs) and Scheduled Tribes (STs) to grant preferential treatment to more backward sub-groups within the broader category.
  2. Article 341 of the Constitution empowers the Parliament exclusively to include or exclude castes from the Presidential list of Scheduled Castes, restricting state legislatures from modifying this notification.
  3. The "Creamy Layer" principle, which excludes economically advanced sections from reservation benefits, applies constitutionally across Other Backward Classes (OBCs), Scheduled Castes, and Scheduled Tribes alike.

Which of the statements given above is/are correct?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

๐Ÿ‘‰ Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: In a landmark constitution bench ruling, the Supreme Court held that states are competent to sub-classify SCs and STs to provide separate quotas for more marginalized and underrepresented groups within those lists to ensure substantive equality under Article 14 and Article 16. Statement 2 is correct: Under Article 341, only Parliament has the power by law to include or exclude any race, caste, or tribe from the list of Scheduled Castes specified in the presidential notification, though states can sub-classify existing notified groups. Statement 3 is incorrect: While the creamy layer criterion applies to OBC reservations (as mandated in the *Indra Sawhney* judgment), the Supreme Court's ruling on sub-classification discussed the application of the creamy layer concept to SCs/STs largely as a principle of equitable distribution, but it does not uniformly function as a mandatory statutory exclusion mechanism across SC/ST categories in the same manner as OBCs without fresh legislative/executive backing.

⚠️ UPSC Prelims Trap Alert: UPSC often tests blanket generalizations; stating that the 'Creamy Layer' applies equally and automatically across SC/STs in identical statutory terms as OBCs is a classic trap.

Syllabus Match: GS Paper 2 - Indian Constitution—Historical Underpinnings, Evolution, Features, Amendments, Significant Provisions and Basic Structure.

Question 2: BRICS and West Asian Geopolitical Architecture

Context / Statement: Consider the following statements regarding India’s engagement in BRICS and its strategic role in West Asia:

  1. BRICS, following its recent expansions, now includes key West Asian energy powerhouses such as Saudi Arabia, the United Arab Emirates, and Iran.
  2. The New Development Bank (NDB), established by BRICS nations, exclusively funds infrastructure projects within member countries and prohibits non-member subscriptions.
  3. India pursues a policy of "multi-alignment" in West Asia, balancing robust strategic and technological partnerships with Israel alongside critical energy and diaspora engagements with Gulf Cooperation Council (GCC) nations.

Which of the statements given above is/are correct?

(a) 1 and 2 only
(b) 1 and 3 only
(c) 2 and 3 only
(d) 1, 2 and 3

๐Ÿ‘‰ Click to Reveal Answer & Detailed Explanation

Correct Answer: (b)

Detailed Explanation: Statement 1 is correct: BRICS expanded significantly, inducting key West Asian nations including Saudi Arabia, the UAE, and Iran, altering the geoeconomic and energy dynamics of the bloc. Statement 2 is incorrect: The New Development Bank (NDB) is open to admitting members beyond the original BRICS founding countries in accordance with the UN Charter, and it has admitted nations like Bangladesh, Egypt, and the UAE as members. Statement 3 is correct: India's West Asian policy is anchored on strategic autonomy and multi-alignment, successfully decoupling its ties with Israel from its vital energy security, trade, and diaspora linkages with Gulf Arab nations. Critical frameworks like I2U2 and India-Middle East-Europe Economic Corridor (IMEC) reflect this calibrated diplomacy.

⚠️ UPSC Prelims Trap Alert: Watch out for absolute terms like "exclusively" in multilateral financial institutions; the NDB allows non-BRICS member countries to join.

Syllabus Match: GS Paper 2 - Bilateral, Regional and Global Groupings and Agreements involving India and/or affecting India's interests.

Question 3: Quantum Computing and Digital Economy

Context / Statement: Consider the following statements regarding Quantum Computing and its technological implications:

  1. Unlike classical computers that process information in binary bits (0s and 1s), quantum computers utilize qubits that leverage the quantum mechanical principles of superposition and entanglement.
  2. Shor's algorithm executed on a sufficiently powerful quantum computer poses a severe cryptographic threat to widely used public-key encryption standards like RSA and ECC.
  3. India’s National Quantum Mission (NQM) aims to scale up quantum computing capacity solely through indigenous development without partnering with international research consortia or quantum tech ecosystems.

Which of the statements given above is/are correct?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

๐Ÿ‘‰ Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: Quantum computers rely on quantum bits (qubits) which can exist in multiple states simultaneously due to superposition and exhibit correlations known as entanglement, enabling exponential processing speeds for complex mathematical problems. Statement 2 is correct: Peter Shor's quantum algorithm can efficiently factorize large composite numbers, rendering classical asymmetric cryptography algorithms (such as RSA and Elliptic Curve Cryptography) vulnerable, which drives the global race towards Post-Quantum Cryptography (PQC). Statement 3 is incorrect: While the National Quantum Mission (approved by the Union Cabinet) emphasizes indigenous R&D across Magnetometry, Quantum Communication, and Quantum Computing, it actively fosters international collaborations, academic partnerships, and global technology ecosystems rather than operating in isolation.

⚠️ UPSC Prelims Trap Alert: Be wary of words like "solely" or "exclusively" in government mission statements; scientific missions rely heavily on global cooperation and cross-border research synergy.

Syllabus Match: GS Paper 3 - Awareness in the fields of IT, Space, Computers, Robotics, Nanotechnology, Bio-technology and issues relating to Intellectual Property Rights.

Question 4: Carbon Credits Trading Scheme (CCTS) and Indian Economy

Context / Statement: Consider the following statements regarding the Carbon Credits Trading Scheme (CCTS) in India:

  1. The CCTS framework is established under the Energy Conservation Act, 2001 (as amended in 2022) to develop a domestic compliance carbon market in India.
  2. The Bureau of Energy Efficiency (BEE), under the Ministry of Power, acts as the designated agency for administering the carbon credit trading scheme in consultation with the Ministry of Environment, Forest and Climate Change.
  3. Under the compliance mechanism of the CCTS, entities are issued Carbon Credit Certificates (CCCs) for reducing greenhouse gas emissions below specified greenhouse gas emission intensity targets.

Which of the statements given above is/are correct?

(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

๐Ÿ‘‰ Click to Reveal Answer & Detailed Explanation

Correct Answer: (d)

Detailed Explanation: All statements are correct. Statement 1 is correct: The Energy Conservation (Amendment) Act, 2022 empowered the Central Government to specify a carbon credit trading scheme, laying the statutory foundation for India's carbon market. Statement 2 is correct: The Bureau of Energy Efficiency (BEE), working under the Ministry of Power, collaborates closely with the Ministry of Environment, Forest and Climate Change (MoEFCC) to operationalize and govern the rules of the carbon market. Statement 3 is correct: The compliance mechanism establishes greenhouse gas emission intensity targets for obligated entities; those that outperform their targets receive Carbon Credit Certificates (CCCs), while non-performers must purchase certificates to meet compliance obligations.

⚠️ UPSC Prelims Trap Alert: Students often assume carbon trading falls entirely under the Ministry of Environment; however, the statutory anchor for CCTS in India stems from the Energy Conservation Act managed by the Ministry of Power / BEE.

Syllabus Match: GS Paper 3 - Conservation, Environmental Pollution and Degradation, Environmental Impact Assessment; Indian Economy and issues relating to growth and development.

Question 5: Chola Administration and Local Governance

Context / Statement: Consider the following statements regarding the administrative system of the Imperial Chola dynasty:

  1. The Chola empire was divided into administrative units in descending order: *Mandalam* (provinces), *Valanadu* (districts), *Nadukku* (sub-districts), and *Ur* or *Villages*.
  2. The famous *Kudavolai* system was an elaborate lottery-based electoral procedure used for selecting members to village assemblies (*Sabhas* or *Mahasabhas*), particularly in Brahmin settlements (*Brahmadeyas*).
  3. Chola local governance functioned entirely through royal nominees appointed by the central monarch, leaving no autonomous space for merchant guilds or agrarian associations.

Which of the statements given above is/are correct?

(a) 1 and 2 only

(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3

๐Ÿ‘‰ Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: The Chola territorial hierarchy was exceptionally well-structured, descending from *Mandalams* (provinces headed by royal princes or governors) down to *Valanadus*, *Nadus*, and finally village assemblies (*Ur*, *Sabha*, *Nagaram*). Statement 2 is correct: The *Uttaramerur inscriptions* provide vivid details of the *Kudavolai* system, where ticket slips bearing candidates' names were placed in a pot and drawn by a young boy to elect members to various committees (*Variyams*) of the village assembly. Statement 3 is incorrect: Chola local administration was remarkable precisely because of its high degree of local autonomy and self-governance (*Sabhas*, *Ur*), complemented by powerful autonomous merchant guilds like *Anjuvannam* and *Manigramam*, rather than being run purely by central royal nominees.

⚠️ UPSC Prelims Trap Alert: Be careful with absolute statements claiming complete centralization in ancient/medieval Indian empires; empires like the Cholas are historically renowned for decentralization and robust local self-government.

Syllabus Match: GS Paper 1 - Indian Culture: Salient aspects of Art Forms, Literature and Architecture from ancient to modern times.

Prelims Revision Flashcards

  • Constitutional Sub-classification: States hold the authority under Article 14 and 16 to sub-classify SC/ST categories to ensure equitable distributive justice, while Parliament retains sole power under Article 341 to alter the central lists.
  • BRICS & West Asia: The expansion of BRICS to include Saudi Arabia, UAE, and Iran highlights the bloc's growing significance in global energy corridors and geoeconomic multilateralism.
  • Quantum Cryptography: Shor’s algorithm threatens RSA and ECC encryption standards, accelerating global and Indian initiatives in Quantum Key Distribution (QKD) and Post-Quantum Cryptography.
  • Carbon Credits Trading Scheme (CCTS): Operationalized under the Energy Conservation Act, 2001 (amended 2022), the BEE and MoEFCC jointly administer India's compliance carbon market and certificate issuance.
  • Chola Local Governance: The Uttaramerur inscriptions showcase the *Kudavolai* lottery electoral system, epitomizing the decentralized village self-government (*Sabha* and *Ur*) characteristic of the Chola administration.

Conclusion

Consistency is the hallmark of a successful civil services aspirant. How well did you navigate today's analytical tests? Post your score (out of 5) in the comments below, analyze your conceptual gaps, and keep refining your editorial-linked revision strategy!

๐Ÿ›️ Official Government & Policy Updates (PIB Gazette Connect)

Key national initiatives, Cabinet & Ministry releases aligned with GS-2 and GS-3:

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