Daily Current Affairs Quiz Prelims Practice 2027
- The 4.2 ka event defines the boundary between the Northgrippian and Meghalayan Ages of the Holocene, with its Global Boundary Stratotype Section and Point (GSSP) located at Mawmluh Cave, Meghalaya.
- A rise in the Oak/Pine pollen ratio in sediment cores indicates a weakening of the Indian Summer Monsoon, as Oak thrives under drier conditions than Pine.
- Research from Deoria Tal (Garhwal Himalaya) links the abrupt monsoon weakening at 4.2 ka BP to a southward shift of the Inter-Tropical Convergence Zone (ITCZ) and a strongly negative phase of the Indian Ocean Dipole (IOD).
- The Birbal Sahni Institute of Palaeosciences (BSIP) used Accelerator Mass Spectrometry (AMS) radiocarbon dating on Trapa seed cases to establish chronology for the Deoria Tal sediment core.
- AStatements 1, 3 and 4 only
- BStatements 2 and 3 only
- CStatements 1 and 4 only
- DAll four statements
Statements 1, 3 and 4 are correct. The 4.2 ka event marks the Northgrippian–Meghalayan boundary, with the GSSP at Mawmluh Cave, Meghalaya. BSIP researchers attributed the ISM weakening to a southward ITCZ shift plus a strongly negative IOD and stronger El Niño phase. Ten AMS ¹⁴C dates on Trapa seed cases established the Deoria Tal chronology. Statement 2 is incorrect — the Oak/Pine ratio works in reverse: a rising ratio indicates a wetter, not weaker, monsoon, since Oak thrives under moisture; the Deoria Tal record shows a rise corresponding to a brief dry event, requiring careful reading of the proxy's direction.
Reason (R): Hanle was selected as the observatory site because the Himalayan ranges obstruct the southwest monsoon, yielding more than 250 clear observing nights per year and precipitable water vapour below 2.5 mm — making it ideal for near-infrared observations.
- ABoth Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A)
- BBoth Assertion (A) and Reason (R) are true, but Reason (R) is NOT the correct explanation of Assertion (A)
- CAssertion (A) is true, but Reason (R) is false
- DAssertion (A) is false, but Reason (R) is true
Both A and R are true, but R does not explain A. HCT has indeed been remotely operated from IIA's Bengaluru campus since June 2001 via an INSAT-3B link, and Hanle's clear skies and low water vapour genuinely make it ideal for near-infrared astronomy. However, the remote operation was chosen for operational convenience and cost efficiency, not because of Hanle's observing conditions — the site's astronomical qualities explain why Hanle was chosen as a location, not why the telescope is operated remotely.
- India's GERD as a percentage of GDP reached its lowest recorded point of 0.64% in 2020–21, and subsequently crossed the 0.8% threshold in 2021–22 for the first time since 2009–10.
- Private industry's contribution to India's GERD crossed 50% for the first time in 2023–24, making India comparable to advanced innovation economies where industry accounts for 65–80% of GERD.
- India's official R&D statistics are compiled by the Department of Science and Technology through the National Science and Technology Management Information System (NSTMIS) using UNESCO and OECD definitions.
- A1, 2 and 3
- B1 only
- C1 and 3 only
- D2 and 3 only
Statements 1 and 3 are correct — GERD/GDP hit a nadir of 0.64% in 2020–21, recovering to 0.83% in 2021–22, first above 0.8% since 2009–10, and NSTMIS under DST compiles national R&D statistics using UNESCO/OECD definitions since 1973. Statement 2 is incorrect in its second clause — while private industry did cross 50% (51.8%) in 2023–24, this does not make India "comparable" to advanced economies where industry contributes 65–80% of GERD; 51.8% remains well below that norm.
- AThe Fields Medal is awarded annually by the International Mathematical Union to mathematicians of any age for lifetime contributions to mathematics.
- BThe Fields Medal is awarded every four years, at the International Congress of Mathematicians, to mathematicians under 40 years of age, recognising both existing achievement and promise of future achievement.
- CThe Fields Medal is funded entirely by the International Mathematical Union and carries a prize of USD 1 million, making it equivalent in monetary value to the Nobel Prize.
- DMaryam Mirzakhani was the first Asian woman to win the Fields Medal, receiving it in 2014 for her work in algebraic geometry.
Option (B) is correct — the Fields Medal is awarded every four years at the ICM to mathematicians under 40, recognising both achievement and future promise. Option (A) is wrong — it's not annual, and there is an age limit. Option (C) is wrong — the prize is about CAD 15,000, not USD 1 million (that's the Nobel's cash component); it's funded by a University of Toronto trust supplemented by the Fields Institute. Option (D) is wrong — Mirzakhani (2014) was the first woman, not specifically "first Asian woman," and her work was in the dynamics and geometry of Riemann surfaces, not algebraic geometry.
- IACS was established on 29 July 1876 by Mahendralal Sircar as India's first national institution dedicated to scientific research by Indians, funded entirely through Indian donations without colonial government support.
- C.V. Raman announced the discovery of the Raman Effect from IACS laboratories on 28 February 1928, a date now observed as National Science Day in India.
- C.V. Raman was the first Asian to win a Nobel Prize in any field, receiving the Nobel Prize in Physics in 1930 for the discovery of the Raman Effect.
- Mahendralal Sircar first proposed the establishment of a national science institution in an 1869 article in the Calcutta Journal of Medicine, arguing that cultivation of physical sciences was essential for India's intellectual progress.
- AStatements 1, 2 and 4 only
- BStatements 2, 3 and 4 only
- CStatements 1 and 2 only
- DAll four statements
Statements 1, 2 and 4 are correct. IACS was founded on 29 July 1876 by Mahendralal Sircar, funded by Indian donors rejecting colonial patronage. Raman announced the Raman Effect from IACS on 28 February 1928, now National Science Day. Sircar's 1869 Calcutta Journal of Medicine article first proposed the institution. Statement 3 is incorrect — Raman was the first Asian Nobel laureate in the sciences specifically, not in any field; Rabindranath Tagore had already won the Nobel Prize in Literature in 1913, before Raman's 1930 Physics prize.
- Permanent Magnet Synchronous Motors (PMSMs) dominate the EV market because permanent magnets establish the air-gap magnetic field without consuming electrical energy, giving them a fundamental efficiency advantage over electromagnet-based alternatives.
- A 'virtual magnet' as described by certain EV startups refers to software that independently generates magnetic fields without any electrical current flowing through physical conductors.
- China controls approximately 60% of global rare-earth mining and approximately 85% of rare-earth processing capacity, making neodymium-iron-boron (NdFeB) magnet supply chains strategically sensitive for EV manufacturers globally.
- A1, 2 and 3
- B1 and 3 only
- C2 and 3 only
- D1 only
Statements 1 and 3 are correct. PMSMs use permanent NdFeB magnets that establish the field without consuming electrical energy, unlike electromagnets which incur resistance, core and switching losses. China's roughly 60% mining and 85% processing dominance makes NdFeB supply chains strategically sensitive. Statement 2 is incorrect — software cannot independently generate magnetic fields; it only controls current through physical copper coils, which then create the field per Ampere's Law — the "virtual magnet" claim conflates software control with field generation, which is physically impossible without current through a conductor.
- Pickaxe Mountain (Kuh-e Kolang Gaz La) is located approximately 220 km south of Tehran and approximately 2 km from the Natanz uranium enrichment complex in Isfahan Province.
- Construction of the Pickaxe Mountain underground facility began in 2020, following a fire at the Natanz enrichment facility which Iran attributed to sabotage.
- The IAEA has been granted access to the Pickaxe Mountain site and has independently verified that no nuclear activities are taking place there, consistent with Iran's declarations.
- The Joint Comprehensive Plan of Action (JCPOA, 2015) required Iran to cap uranium enrichment at 3.67% and accept IAEA Additional Protocol inspections; the United States unilaterally withdrew from JCPOA in May 2018.
- AStatements 1, 2 and 4 only
- BStatements 1 and 4 only
- CStatements 2 and 3 only
- DAll four statements
Statements 1, 2 and 4 are correct. Pickaxe Mountain is about 220 km south of Tehran, roughly 2 km from Natanz in Isfahan Province; construction began in 2020 following a fire Iran blamed on sabotage; and the JCPOA (2015) capped enrichment at 3.67% with Additional Protocol inspections, with the US withdrawing in May 2018. Statement 3 is incorrect — the reverse is true: IAEA inspectors have not been granted access to Pickaxe Mountain, with Director General Grossi confirming in March 2026 that Iran announced intent for nuclear activity there but denied inspector access.
- AOperation Opera — Al-Kibar nuclear reactor, Syria, 2007
- BOperation Orchard — Osiraq reactor, Iraq, 1981
- CStuxnet cyber attack — Iranian centrifuges at Natanz, approximately 2009–2010
- DTelemark sabotage — Bushehr reactor, Iran, 1943
Option (C) is correct — Stuxnet, a US–Israel-attributed cyberweapon, targeted Iranian centrifuges at Natanz around 2009–2010, the first confirmed malware to cause physical destruction of industrial equipment. Option (A) is wrong — Operation Opera targeted Osiraq, Iraq (1981), not Al-Kibar, Syria. Option (B) is wrong — Operation Orchard targeted Al-Kibar, Syria (2007), not Osiraq, Iraq; these two options swap the operations. Option (D) is wrong — the Telemark sabotage (1943) targeted the Vemork heavy water plant in Norway, not Iran's Bushehr reactor, which was Soviet/Russian-built and commissioned in 2011.
- The Amendment Bill provides for a minimum sentence of seven years and a fine of up to Rs 10 crore for offences committed as part of an organised crime network related to paper leaks.
- The Bill mandates that investigations into paper leak offences must be completed within two months and trials in designated courts within three months of the filing of the charge sheet.
- The parent Act of 2024 was the first law in India to address unfair means in public examinations; prior to it, no specific central legislation existed to deal with examination fraud.
- A2 and 3 only
- B1, 2 and 3
- C3 only
- D1 and 2 only
All three statements are correct. Organised crime provisions carry a minimum 7-year sentence and up to ₹10 crore fine, while individual offenders face 5–10 years and up to ₹50 lakh. The Bill mandates a 2-month investigation window and 3-month trial completion from chargesheet filing in fast-track courts. The Public Examinations (Prevention of Unfair Means) Act, 2024, was indeed India's first dedicated central law specifically addressing examination fraud; before it, only general IPC/BNS and State-law provisions applied.
Reason (R): India's insurance penetration at approximately 4% of GDP remains significantly below the global average of approximately 7%, partly because compliance burdens have restricted the expansion of insurance distribution to rural and semi-urban markets.
- ABoth Assertion (A) and Reason (R) are true, and Reason (R) is the correct explanation of Assertion (A)
- BBoth Assertion (A) and Reason (R) are true, but Reason (R) is NOT the correct explanation of Assertion (A)
- CAssertion (A) is true, but Reason (R) is false
- DAssertion (A) is false, but Reason (R) is true
Both A and R are true, and R explains A. IRDAI's July 2026 reform introduced perpetual registration with an annual fee, replacing periodic renewals, explicitly to reduce compliance burden and expand reach. India's insurance penetration of about 4% of GDP (Life ~3.2%, Non-life ~1%) trails the global average of ~7%, with periodic-renewal compliance burdens identified as a barrier to rural distribution — the reform directly addresses this chain, making R the genuine causal explanation for A.
- DAANVEER is an initiative of the Ministry of Panchayati Raj that enables citizens and organisations to donate pre-approved computer bundles directly to Gram Panchayats through the Meri Panchayat mobile application, integrated with the DigiHaat marketplace.
- India has approximately 2.5 lakh Gram Panchayats, which derive their constitutional status from the 73rd Constitutional Amendment Act, 1992, which also mandated devolution of functions across 29 subjects listed in the Eleventh Schedule.
- The e-GramSwaraj platform is used for digital capture of Gram Sabha proceedings, while Sabha Saar is the platform for Gram Panchayat fund tracking and accounting.
- DAANVEER was developed in collaboration with the National Informatics Centre (NIC) and DigiHaat, and carries the tagline 'Give Back to Your Village'.
- AStatements 1 and 4 only
- BAll four statements
- CStatements 1, 2 and 4 only
- DStatements 2, 3 and 4 only
Statements 1, 2 and 4 are correct. DAANVEER, a Ministry of Panchayati Raj initiative via the Meri Panchayat app integrated with DigiHaat, lets donors give pre-approved computer bundles to Gram Panchayats. India has about 2.5 lakh Gram Panchayats, constitutionally recognised by the 73rd Amendment (1992), which devolved 29 subjects under the Eleventh Schedule. DAANVEER was developed with NIC and DigiHaat, carrying the tagline "Give Back to Your Village." Statement 3 is incorrect — the platforms are swapped: e-GramSwaraj handles fund tracking and accounting, while Sabha Saar captures Gram Sabha proceedings.
- At the International Labour Conference, India's government delegate abstained from voting on Convention No. 193, while India's employer and worker delegates both voted in favour — an internal split within India's tripartite delegation.
- Convention No. 193 requires that worker classification on digital platforms be determined 'mainly by the facts relating to the performance of work', and mandates platforms to disclose significant automated decisions and maintain a human reviewer for consequential actions.
- India has ratified all eight of the ILO's core Conventions, including those on freedom of association and the right to collective bargaining, and its abstention on Convention 193 represents a departure from its established ratification record.
- A1, 2 and 3
- B1 and 2 only
- C2 and 3 only
- D1 only
Statements 1 and 2 are correct — India's government delegate abstained while employer and worker delegates voted in favour, an internal tripartite split, and Convention 193 requires classification based mainly on facts of work performance plus algorithmic transparency with a human reviewer for consequential decisions. Statement 3 is incorrect — India has ratified only six of the eight core ILO Conventions, not all eight, having not ratified Conventions 87 and 98 on freedom of association and collective bargaining, since these would extend strike rights to government employees, prohibited under domestic service rules.
- The Andaman and Nicobar Command (ANC), established in 2001, is India's only existing tri-service command and serves as a reference point for the institutional challenges of theatre-isation.
- The Goldwater-Nichols Defense Reorganization Act (1986) of the United States successfully reorganised its military into unified combatant commands; Operation Just Cause in Panama (1989) was considered its first successful operational test.
- China created five theatre commands in 2016; the Northern Theatre Command facing India was operationally tested at the Doklam standoff (2017) and the Galwan clash (2020), both within four years of its creation.
- India's existing military readiness measurement framework uses output-based readiness standards — unit-level, force-level and sustainability with surge capacity — benchmarked against operational plans, similar to advanced military powers.
- AStatements 1, 2 and 3 only
- BStatements 2 and 3 only
- CStatements 1 and 4 only
- DAll four statements
Statements 1, 2 and 3 are correct. The Andaman and Nicobar Command (2001) remains India's only tri-service command. The Goldwater-Nichols Act (1986) reorganised US forces into unified combatant commands, with Operation Just Cause (Panama, 1989) as its first successful test. China's Northern Theatre Command, created in 2016, was tested at Doklam (2017) and Galwan (2020), within four years of formation. Statement 4 is incorrect — it describes what India currently lacks, not what it has; India measures defence inputs (money, manpower, machines, material) rather than output-based readiness standards, which the source argues India needs to develop but does not yet possess.
- AIndia's gig workforce stood at 2.35 crore in 2020–21 and is projected to reach 7.7 crore by 2029–30, constituting approximately 10% of the total workforce.
- BIndia's gig workforce stood at 7.7 million in 2020–21, of which approximately 50% had social security coverage, with the remainder relying on the Code on Social Security, 2020 for protection.
- CIndia's gig workforce stood at 7.7 million in 2020–21 and is projected to reach 2.35 crore by 2029–30, constituting approximately 6.7% of the total workforce including agricultural workers.
- DIndia's gig workforce stood at 7.7 million in 2020–21 and is projected to reach 2.35 crore by 2029–30, constituting approximately 6.7% of the non-agricultural workforce.
Option (D) is correct — NITI Aayog data shows 7.7 million gig workers in 2020–21, projected to reach 2.35 crore by 2029–30, about 6.7% of the non-agricultural workforce specifically. Option (A) inverts the base and projection figures. Option (B) is wrong on social security — only about 15% of gig workers have coverage, not 50%. Option (C) is wrong on the denominator — the 6.7% figure applies to the non-agricultural workforce, not the total workforce (agricultural workers form about 45% of employed India, which would lower the percentage if included).
- ARoman Warm Period (2,500–1,450 cal yr BP) — Weak ISM; linked to southward ITCZ shift and stronger El Niño
- BMedieval Climate Anomaly (1,050–650 cal yr BP) — Strong ISM; linked to northward ITCZ shift, positive temperature anomalies, and high solar activity
- CLittle Ice Age (650–100 cal yr BP) — Strong ISM; linked to intensification of the Asian westerly jet and warm-phase ENSO
- D4.2 ka event (~4,200 cal yr BP) — Strong ISM; resulted in demographic expansion of the Harappan Civilisation westward
Option (B) is correct — the Medieval Climate Anomaly (~950–1300 CE) saw a strong ISM linked to a northward ITCZ shift, positive temperature anomalies, increased sunspot activity, and wetter Indian conditions. Option (A) is wrong — the Roman Warm Period actually had a strong, not weak, ISM, coinciding with high agricultural productivity. Option (C) is wrong — the Little Ice Age saw a weak, not strong, ISM, with a southward ITCZ shift and intensified westerlies. Option (D) is wrong in two ways — the 4.2 ka event caused a weak, not strong, ISM, and Harappan populations migrated eastward to the Ganga plains, not westward.


