Daily UPSC Prelims Quiz (October 15, 2026): 5 High-Yield MCQs & Explanations

Daily UPSC Prelims Quiz: 5 High-Yield Questions with Detailed Explanations (October 15, 2026)

Test your knowledge with today's UPSC Prelims practice questions derived from today's top newspaper editorials and analytical current affairs columns. Master these high-yield concepts spanning International Relations, Space Governance, Science & Technology, Geography, and Polity.

Question 1: BRICS Expansion & West Asian Geopolitics

Context / Statement: Consider the following statements regarding BRICS and India's strategic engagement:

BRICS expanded to formally admit several West Asian nations, including Iran, Egypt, and the United Arab Emirates (UAE).
India's engagement with West Asian nations through the BRICS platform complements its independent "Act West" policy while preserving its strategic autonomy.
The New Development Bank (NDB) established by BRICS strictly prohibits extending financial assistance or loans to non-BRICS developing countries.

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

👉 Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: BRICS expanded its membership, incorporating key West Asian and African economic powerhouses like Iran, Egypt, UAE, and Ethiopia. Statement 2 is correct: India maintains robust multi-alignment; engaging in multilateral groupings like BRICS while strengthening bilateral partnerships across West Asia aligns with its strategic autonomy. Statement 3 is incorrect: The New Development Bank (NDB) is mandated to fund infrastructure and sustainable development projects not only in BRICS countries but also in other emerging economies and developing countries.

⚠️ UPSC Prelims Trap Alert: UPSC often traps aspirants by claiming multilateral development banks (like NDB or AIIB) have exclusionary clauses restricting membership or lending strictly to founding members. Always verify institutional charters.

Syllabus Match: GS Paper 2 - Bilateral, regional and global groupings and agreements involving India and/or affecting India's interests.

Question 2: On-Orbit Space Control Weapons & Space Governance

Context / Statement: Consider the following statements regarding space security and international space law:

The 1967 Outer Space Treaty explicitly prohibits the stationing of nuclear weapons or weapons of mass destruction in Earth's orbit, but contains ambiguities regarding conventional on-orbit space control systems.
On-orbit space control weapons involve co-orbital capabilities that can inspect, track, jam, or physically disable adversary satellites directly in space.
The Moon Agreement of 1979 has been ratified by all major space-faring nations, establishing a binding global legal framework for resource extraction on celestial bodies.

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

👉 Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: Article IV of the Outer Space Treaty (OST) bans WMDs in orbit, but conventional weapons and dual-use technological applications leave major regulatory loopholes. Statement 2 is correct: Unlike ground-based anti-satellite (ASAT) missiles, on-orbit space control weapons operate in space, utilizing proximity operations to neutralize or interfere with orbital assets. Statement 3 is incorrect: The Moon Agreement (1979) has *not* been ratified by major space-faring nations (such as the USA, Russia, China, and India), rendering its authority severely limited.

⚠️ UPSC Prelims Trap Alert: UPSC frequently tricks candidates by substituting "universal ratification" or "ratified by all major powers" for international treaties like the Moon Agreement or Kyoto Protocol.

Syllabus Match: GS Paper 3 - Awareness in the fields of Space and Technology.

Question 3: Quantum Computing & The Digital Economy

Context / Statement: Consider the following statements regarding quantum computing principles and applications:

Quantum computers utilize qubits that exploit the phenomena of superposition and entanglement to perform complex computations simultaneously.
Shor's algorithm executed on a scalable quantum computer poses a severe mathematical threat to classical public-key cryptography algorithms such as RSA.
Quantum supremacy implies that quantum computers can universally replace classical supercomputers across all computational tasks with zero error rates.

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

👉 Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: Qubits can exist in multiple states simultaneously (superposition) and become interconnected (entanglement), multiplying processing capacity exponentially. Statement 2 is correct: Shor’s algorithm can efficiently find the prime factors of an integer, threatening widely used asymmetric encryption methods. Statement 3 is incorrect: Quantum supremacy means a quantum device solves a *specific* contrived mathematical problem faster than any classical computer; it does *not* mean quantum computers replace classical computers universally for all tasks, nor are they error-free (they require complex error correction).

⚠️ UPSC Prelims Trap Alert: Beware of absolute terms like "universally replace", "across all tasks", or "zero error rates" in emerging tech questions.

Syllabus Match: GS Paper 3 - Science and Technology- developments and their applications and effects in everyday life.

Question 4: Satellite Orbits & Characteristics

Context / Statement: Consider the following statements regarding different satellite orbits used in space missions:

Low Earth Orbit (LEO) satellites circle the Earth at lower altitudes (160 km to 2,000 km), offering low-latency communication and high-resolution Earth observation.
Geostationary Equatorial Orbit (GEO) satellites match the Earth's rotational speed, appearing fixed over a specific point on the equator at an altitude of approximately 35,786 km.
Sun-Synchronous Orbit (SSO) is a specialized geostationary orbit designed to keep satellites permanently aligned with the Sun's coronal mass ejections.

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

👉 Click to Reveal Answer & Detailed Explanation

Correct Answer: (a)

Detailed Explanation: Statement 1 is correct: LEO satellites are close to Earth, making them ideal for high-speed internet constellations and Earth observation. Statement 2 is correct: GEO satellites orbit at ~35,786 km with a 24-hour period matching Earth's rotation, making them vital for meteorological and telecommunication broadcasting. Statement 3 is incorrect: Sun-Synchronous Orbit (SSO) is *not* geostationary; it is a near-polar LEO orbit where the satellite passes over any given point of the planet's surface at the exact same local solar time, making it optimal for consistent lighting in remote sensing.

⚠️ UPSC Prelims Trap Alert: UPSC often swaps orbital definitions, mixing up polar/sun-synchronous characteristics with geostationary dynamics.

Syllabus Match: GS Paper 3 - Awareness in the fields of Space, IT and Computers.

Question 5: Rapid Urbanisation & Internal Migration

Context / Statement: Consider the following statements regarding urbanisation patterns and internal migration in India:

Article 19(1)(e) of the Indian Constitution guarantees citizens the fundamental right to reside and settle in any part of the territory of India, facilitating internal migration.
Circular migration in developing economies is primarily characterized by permanent relocation, driven by formal urban social security guarantees and high-paying permanent jobs.
The Urban Heat Island (UHI) phenomenon causes metropolitan centers to experience significantly higher temperatures than surrounding rural regions due to concrete surfaces and anthropogenic heat emissions.

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

👉 Click to Reveal Answer & Detailed Explanation

Correct Answer: (c)

Detailed Explanation: Statement 1 is correct: Article 19(1)(e) ensures freedom of movement and settlement across India, underpinning labor mobility. Statement 2 is incorrect: Circular migration is *not* permanent relocation; rather, it involves temporary, repetitive movement between home rural regions and urban employment hubs, typically driven by informal sector insecurity and lack of formal social safety nets. Statement 3 is correct: UHI is a well-documented microclimatic effect where built-up urban infrastructure absorbs and reradiates solar heat intensely compared to vegetated rural areas.

⚠️ UPSC Prelims Trap Alert: Be careful with terminology definitions like "circular migration"—it implies temporary/seasonal mobility, not permanent settlement.

Syllabus Match: GS Paper 1 - Population and Associated Issues, Poverty and Developmental issues, Urbanisation, their problems and their remedies.

Prelims Revision Flashcards

BRICS Expansion: Incorporates key geopolitical players (Iran, Egypt, UAE, Ethiopia), reinforcing multilateralism and alternative financial architectures through the NDB.
Space Governance & Arms Control: The 1967 Outer Space Treaty bans WMDs in orbit, but conventional on-orbit space control weapons (co-orbital anti-satellite capabilities) face regulatory gaps.
Quantum Computing: Relies on superposition and qubits; algorithms like Shor's threaten classical RSA encryption, necessitating Post-Quantum Cryptography (PQC).
Satellite Orbit Mechanics: LEO provides low latency and high resolution; GEO enables fixed footprints at ~35,786 km; SSO ensures constant sun illumination angles for Earth observation.
Urbanisation & Migration Dynamics: Internal mobility is safeguarded by Article 19(1)(e); circular migration reflects informal sector vulnerabilities, while UHIs highlight microclimatic urban stress.

Conclusion

Consistency is the bedrock of success in the UPSC Civil Services Examination. How did you score in today's high-yield quiz? Post your score (out of 5) in the comments below, analyze your conceptual gaps, and keep revising!

🏛️ Official Government & Policy Updates (PIB Gazette Connect)

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

DAILY NEWS TELLER

Search This Blog