Daily Quiz — April 10, 2026

National Quantum Mission (NQM) was approved April 2023 with ₹6,003 crore outlay over 8 years (to 2031). It has four thematic hubs at IISc Bengaluru, IIT Bombay, IIT Madras, and IIT Delhi, covering four pillars: Quantum Computing, Quantum Communication, Quantum Sensing, and Quantum Materials.
The 1,000-km QKD network is a midpoint toward the 2,000-km national backbone target. China leads globally with a 12,000-km QKD backbone plus the Micius satellite (demonstrated 7,600-km China-Austria QKD in 2017).
India separately tracks Post-Quantum Cryptography (PQC) — a parallel approach using classical algorithms resistant to quantum attacks; NIST finalised PQC standards in 2024. The key distinction: QKD secures key distribution using physics; PQC secures data using mathematical hardness.

PESA (1996) was enacted to extend the spirit — not the letter — of the 73rd Amendment (1992) to Scheduled Fifth Schedule areas, while adding critical protections reflecting tribal customary governance. The 10 PESA states: Andhra Pradesh, Chhattisgarh, Gujarat, Himachal Pradesh, Jharkhand, Maharashtra, Madhya Pradesh, Odisha, Rajasthan, Telangana (Telangana was bifurcated from AP in 2014 and inherited PESA coverage).
Key PESA provisions: Gram Sabha must safeguard tribal traditions; Gram Sabha must approve development plans; Gram Sabha must be consulted before land acquisition; State laws cannot be inconsistent with PESA. The Niyamgiri judgment (2013) — Orissa Mining Corp v. MoEF — held that Gram Sabhas of Dongria Kondh tribe had the right to decide on Vedanta’s bauxite mine; all 12 voted against it. This is the landmark application of PESA in mining.

NQM’s four Thematic Hubs (T-Hubs): (1) Quantum Computing — IISc Bengaluru; (2) Quantum Communication — IIT Bombay (also leads QKD work in collaboration with QNu Labs); (3) Quantum Sensing and Metrology — IIT Madras; (4) Quantum Materials and Devices — IIT Delhi. These hubs coordinate national research, interface with industry, and train the next generation of quantum scientists.
QNu Labs (Bengaluru) is the private sector partner that developed and deployed the 1,000-km QKD network. QKD applications: secure government communications (military command, financial transfers), eventually protecting Aadhaar biometric transmissions.
China’s Micius satellite (2016, operated by CAST) demonstrated satellite-based QKD at 7,600 km in 2017 — India’s NQM targets a quantum satellite by 2031.

NBS scheme was launched in April 2010 to replace the earlier flat product-based subsidy for P&K fertilisers with a nutrient-based model — paying a fixed subsidy per kg of nutrient (N, P, K, S) to manufacturers, allowing market-linked pricing. Urea remains outside NBS due to political sensitivity — its price has been frozen at ₹242/bag since 2012 despite production costs of ₹1,200+ per bag.
This creates a massive NPK imbalance: ideal NPK ratio is 4:2:1 but actual usage is approximately 8-9:3:1 (nitrogen-heavy) because urea is dramatically cheaper. Consequences: soil acidification, declining organic carbon, groundwater nitrate contamination, declining yields despite higher inputs.
India imports ~50% of DAP from Saudi Arabia, China, Jordan; ~100% of MOP from Canada, Belarus, Russia — making P&K supply vulnerable to geopolitical disruptions.

Article 80(1)(a) empowers the President to nominate 12 Rajya Sabha members with expertise in literature, science, art, or social service. Harivansh Narayan Singh (former RS Deputy Chairman, journalist-Prabhat Khabar) was nominated April 10, 2026, filling the vacancy after former CJI Ranjan Gogoi’s tenure ended.
Nominated members' voting rights: Can vote on bills (including Constitution Amendment Bills); can vote in Vice Presidential election (Article 66 — elected by members of both Houses); CANNOT vote in Presidential election (Article 55 — electoral college = elected MPs + elected MLAs only). The 104th Amendment (2019) abolished nominated Anglo-Indian seats in Lok Sabha (earlier 2 seats under Article 331) and state assemblies.
Rajya Sabha total: 245 = 233 elected + 12 nominated.

The 16th Finance Commission (2026–27 to 2030–31) allocated ₹4.35 lakh crore to rural local bodies — up from the 15th FC’s ₹2.97 lakh crore recommended (₹2.82 lakh crore released, efficiency 94.94%). States with 100% 15th FC utilisation: Assam, Kerala, Mizoram, Tripura, Uttar Pradesh.
Peak year allocation: ₹1,13,558 crore (2030–31). Article 243G (11th Schedule): Lists 29 subjects for Panchayat functions — but devolution is enabling, not mandatory; states differ widely in actual delegation.
Article 243H: Panchayat taxation powers. Article 280: Central Finance Commission — every 5 years.
Article 243I: State Finance Commission — every 5 years. The difference from Gram Panchayat’s own revenue: typically less than 5% of total receipts — FC grants and Central/State scheme transfers dominate.

India’s key bilateral military exercises by domain: Army: Yudh Abhyas (USA), Indra (Russia), Shakti (France), Tasman Saber (Australia), Mitra Shakti (Sri Lanka), Surya Kiran (Nepal), Bold Kurukshetra (Singapore), Cyclone (Egypt), Sada Al-Janub (Saudi Arabia). Navy: Malabar (USA+Japan+Australia), Varuna (France), Konkan (UK), IBSAMAR (India-Brazil-South Africa), JIMEX (Japan).
Air Force: Cope India (USA), Garuda (France), Desert Eagle (UAE), Tasman Saber (Australia). Special Forces: Vajra Prahar (USA-SF), Ekuverin (Maldives).
Exercise Brahmastra (Pokhran, April 2026) showcased Apache AH-64E — 22 helicopters procured via FMS from USA (2019-20). Apache’s primary weapon: AGM-114 Hellfire anti-tank missile.
Pokhran: Site of nuclear tests Pokhran-I (1974, Smiling Buddha) and Pokhran-II (1998, Operation Shakti, 5 devices).

Bayer Process (1887, Karl Bayer): Bauxite is treated with hot caustic soda (NaOH) under high pressure — aluminium hydroxide is precipitated and calcined to alumina (Al₂O₃). Hall-Héroult Process (1886, independently by Charles Hall and Paul Héroult): Alumina is dissolved in molten cryolite (Na₃AlF₆) at ~960°C and electrolysed — aluminium deposits at cathode.
Energy intensity: ~15 kWh per kg of aluminium — making cheap electricity the key competitive factor. India’s aluminium sector: NALCO (Odisha — largest PSU; refinery at Damanjodi, smelter at Angul), Vedanta (Lanjigarh refinery, Jharsuguda smelter), Hindalco (Renukoot, UP).
Odisha: 41% of India’s bauxite reserves; 73% of production. Bauxite critical uses: aluminium (packaging, automotive, aerospace, EVs), refractory materials, abrasives, aluminium sulphate (water treatment).

Rajya Sabha’s two exclusive federal powers: (1) Article 249: RS can resolve (2/3 majority of members present and voting) that it is necessary for Parliament to legislate on a State List subject in national interest — Parliament can then legislate for 1 year (renewable). (2) Article 312: RS can resolve (2/3 majority) that it is necessary in national interest to create new All India Services — Parliament can then by law create such services. Indian Forest Service (IFS) was created under Article 312 in 1966.
Rajya Sabha permanent House under Article 83(1): cannot be dissolved; 1/3 of members retire every 2 years; each member has 6-year term. The Indian Police Service (IPS) and Indian Administrative Service (IAS) predate the Constitution — they were created under Part XIV of the Constitution (Articles 308-323).
Harivansh Narayan Singh was formerly RS Deputy Chairman — Article 90 (elected by RS members).

PFBR key parameters: 500 MWe; sodium-cooled; fuel: MOX (mixed oxide of U-238 + Pu-239); blanket: U-238 (breeds Pu-239) and Th-232 (breeds U-233 for Stage 3); built by BHAVINI (Bharatiya Nabhikiya Vidyut Nigam Ltd) under DAE; location: IGCAR campus, Kalpakkam, Tamil Nadu; first criticality achieved: April 2024 (16 years behind 2010 schedule). Breeding ratio >1 means more fuel produced than consumed.
Sodium properties relevant to FBR: (1) does not moderate neutrons (essential for fast neutron cycle); (2) excellent heat transfer properties; (3) operates at atmospheric pressure (vs high pressure in water-cooled reactors). Sodium risks: (1) reacts violently with water (sodium fire risk — special containment needed); (2) becomes radioactive (Na-24) when irradiated.
AERB (Atomic Energy Regulatory Board) provides safety oversight — but its independence from DAE is a structural governance concern.

CASD requires a minimum of 4-5 SSBNs to maintain one permanently at sea (accounting for refit, maintenance, crew rotation cycles). India’s SSBN fleet: INS Arihant (commissioned 2016, 6,000 tonnes) + INS Arighat (commissioned August 2024) + S4 class under construction (13,500 tonnes, ICBM-range missiles).
India’s K-series SLBMs: K-15 Sagarika (750 km range), K-4 (3,500 km), K-5/K-6 (under development, ICBM range). ATV Programme: India’s classified SSBN development programme — Navy + DRDO + DAE; construction at Ship Building Centre, Visakhapatnam.
Large Cavitation Tunnel (LCT) at NSTL Visakhapatnam: enabled hydrodynamic testing for SSBN hull and propeller design. India is one of six nations with SSBNs: USA, Russia, UK, France, China, India.
India’s nuclear doctrine: No First Use (NFU) + credible minimum deterrence — CASD provides the operational foundation for credible NFU.

Union Territories classification: UTs with legislature: (1) Puducherry — Article 239A (legislature + CM + Council of Ministers; LG as head); (2) Delhi (NCT) — Article 239AA (broader powers than 239A; Lieutenant Governor has significant concurrent powers; multiple SC judgments on LG vs elected govt friction); (3) Jammu & Kashmir — Article 239AA (post J&K Reorganisation Act 2019; previously a full state under Article 370). UTs without legislature: Andaman & Nicobar Islands, Chandigarh, Dadra & NH & Daman & Diu, Lakshadweep, Ladakh.
Each UT is administered by an Administrator/Lieutenant Governor appointed by the President under Article 239. Puducherry elections 2026: AINRC-BJP vs Congress-DMK alliance; 30 assembly seats; turnout 89.87%; results May 4, 2026.

QKD vs PQC comparison: QKD — uses quantum photons to distribute encryption keys; security from physics (any measurement disturbs quantum state); requires dedicated quantum communication infrastructure (optical fibre or satellite); currently limited range without quantum repeaters. PQC (Post-Quantum Cryptography) — uses classical mathematical algorithms that are believed to resist both classical and quantum computer attacks; NIST finalised PQC standards in 2024 (CRYSTALS-Kyber for key encapsulation, CRYSTALS-Dilithium for digital signatures); can run on existing infrastructure.
India pursues both: NQM for QKD infrastructure, and DST has a separate PQC standardisation initiative. The 'harvest now, decrypt later' threat: adversaries are already storing encrypted data today (government cables, financial transactions, Aadhaar transmissions) hoping to decrypt them when quantum computers mature — estimated 10-15 years away.

Niyamgiri facts: Location — Niyamgiri hills, Kalahandi-Rayagada, Odisha (Eastern Ghats). Tribe — Dongria Kondh (considered Niyam Raja their deity residing on the hill).
Company — Vedanta Resources (UK-listed; Lanjigarh refinery 5 MTPA capacity at the foot of the hills). Stage-2 forest clearance was pending — Supreme Court directed 12 Gram Sabhas to convene and decide.
All 12 Gram Sabhas (2013) unanimously rejected the mine — Stage-2 clearance was refused. Significance: (1) First time SC referred a mining decision to tribal Gram Sabhas; (2) Established that FRA community rights + PESA Gram Sabha authority together constitute a community veto on forest mining; (3) Vedanta had to abandon the mine.
The Sijimali conflict (2026) directly invokes this precedent — tribals allege Gram Sabha approvals obtained by fraud, seeking court intervention.

Rajya Sabha’s special constitutional provisions: Article 80 — Composition (245 total = 233 elected + 12 nominated); Article 249 — RS can authorise Parliament to legislate on State List (2/3 majority; valid 1 year, renewable; passed to address Coelho case aftermath); Article 312 — RS can authorise creation of new All India Services (2/3 majority; IFS created 1966 under this provision); Article 83 — RS is permanent house (cannot be dissolved). Other key RS articles: Article 89 (VP as ex-officio Chairman), Article 90 (Deputy Chairman elected by RS members).
Gram Sabha: Article 243A (Part IX — The Panchayats). All India Services: IAS, IPS, IFS (created 1966) — under Article 312.
Central Services: UPSC-recruited services like IRS, IFS (Foreign), Indian Railway Services etc. — not under Article 312.

Article 239A vs Article 239AA: Article 239A (Puducherry) — creates a legislature for the UT; Lieutenant Governor heads administration; CM + Council of Ministers responsible to legislature but LG retains concurrent executive powers. Article 239AA (Delhi, J&K) — confers broader legislative powers including on subjects in State List (with exceptions for land, police, public order which remain with Centre/LG).
Kerala’s political history: Since 1980, LDF and UDF alternated in power every 5 years without exception — until 2021 when LDF under Pinarayi Vijayan won back-to-back (2016 + 2021). 2026 election tests whether this represents a structural political shift or whether the alternation pattern reasserts itself. Assam: 126 assembly seats; BJP-led NDA holds government; CM Himanta Biswa Sarma.
Key Assam issues: NRC (2019 final list excluded ~19 lakh), CAA 2019, APSC recruitment irregularities, floods, tea garden workers.

India’s NPK imbalance: Ideal 4:2:1 (N:P:K) vs actual ~8-9:3:1. Root cause: Price gap between subsidised urea (₹242/bag, unchanged since 2012) and subsidised DAP (₹1,350/bag).
Consequences: Soil acidification, declining organic carbon, nitrate leaching into groundwater, declining factor productivity (more inputs needed per unit output). Import profile: DAP — ~50% from Saudi Arabia, China, Jordan; MOP — ~100% (India has no potash reserves; imports from Canada, Belarus, Russia).
Fertiliser subsidy in Union Budget: ₹1.64 lakh crore (2025-26) — one of India’s largest fiscal commitments. NBS launched 2010 specifically to correct NPK imbalance by allowing P&K prices to be market-linked with fixed per-nutrient subsidy.
Related schemes: Soil Health Card Scheme (2015); PM PRANAM (promotes alternative fertilisers); Nano Urea by IFFCO (liquid format, 500 ml).

FRA (2006) formal name: Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006. Two main categories of rights: (1) Individual Forest Rights (IFR) — recognition of homestead and cultivation land rights (up to 4 hectares) of forest-dwelling families; (2) Community Forest Rights (CFR) — rights to manage, protect, regenerate, and use community forest resources (timber, NTFP, grazing grounds, sacred groves, water bodies).
Other Traditional Forest Dwellers (OTFD): non-ST communities who have been residing in forests for 75+ years prior to December 13, 2005 — must prove continuous residence for 3 generations. Gram Sabha is the authority for receiving, consolidating, verifying, and approving claims under FRA. FRA amendment: Proposed to include forest-dwelling pastoralists; pending.
Key Supreme Court case: Wildlife First v. Union of India (2019) — SC initially ordered eviction of 11.8 lakh encroachments but stayed the order after MoTA intervention.

Indian Army Apache deployment: 16 AH-64E Apache helicopters — primarily with Army Aviation Corps. Indian Navy Apaches: 6 helicopters for maritime strike role.
Total: 22 helicopters. Apache AH-64E Guardian specifications: Primary weapon — AGM-114 Hellfire (anti-tank guided missile, 8 km range); Secondary — Hydra-70 rockets, AIM-92 Stinger (air-to-air), 30mm M230 chain gun; Sensors — AN/APG-78 Longbow radar (fire-and-forget ATGM engagement), FLIR (forward-looking infrared), night vision.
Combat employment: Pokhran Exercise Brahmastra (April 2026) showcased combined arms employment — Apache pop-up attacks coordinated with tank-infantry manoeuvre. FMS (Foreign Military Sales): US Government-to-Government sale under Arms Export Control Act — ensures interoperability, training, and spare parts support.
India also operates HAL Rudra (Dhruv-based armed helicopter) and is developing HAL IMRH (Indian Multi-Role Helicopter).

PFBR breeding mechanism: Reactor core contains MOX fuel (U-238 + Pu-239). Fast neutrons cause fission of Pu-239 (releasing energy + more neutrons).
Excess neutrons strike U-238 in blanket — U-238 captures neutron → U-239 → beta decay → Np-239 → beta decay → Pu-239 (new fissile material). Net result: More Pu-239 produced than consumed (breeding ratio >1).
Thorium blanket additionally produces U-233: Th-232 + neutron → Th-233 → Pa-233 → U-233 (Stage 3 fuel). India’s three-stage logic: Stage 1 PHWRs produce Pu-239 from spent fuel → Stage 2 FBRs breed more Pu-239 + U-233 → Stage 3 AHWRs use U-233/Th-232 cycle.
India’s thorium reserves: ~846,477 tonnes (25-30% of world total) in monazite sands (Kerala, Tamil Nadu coasts). India’s uranium reserves: limited (~94,600 tonnes) — hence the strategic importance of the breeding cycle.

Suez Canal facts: Length: 193 km (no locks — sea-level canal unlike Panama which has locks). Width: 313 m (expanded).
Connects: Mediterranean Sea (Port Said, north) to Red Sea (Port Tewfiq/Suez, south). Controlled by: Suez Canal Authority (Egypt) — nationalised by Nasser in 1956 (Suez Crisis).
Daily transits: ~51 vessels; annual revenue: ~$9 billion (Egypt). ~12% of global trade; ~30% of global container trade. India-specific: Bulk of India’s Europe-bound exports transit Suez. 2021 incident: Ever Given (container ship) blocked canal for 6 days — $10 billion/day estimated disruption. 2024-25: Houthi attacks in Red Sea diverted shipping around Cape of Good Hope — added 10-15 days + $1 million/voyage cost.
Exercise Cyclone-IV (India-Egypt) is partly motivated by strategic interest in Suez Canal stability.

India’s nuclear tests: Pokhran-I (Smiling Buddha): May 18, 1974; single device; described as 'Peaceful Nuclear Explosion (PNE)' to avoid NPT implications; triggered formation of Nuclear Suppliers Group (NSG) in 1974 (to prevent nuclear technology proliferation). Pokhran-II (Operation Shakti): May 11 + May 13, 1998; 5 devices total (3 + 2); included thermonuclear device, fission device, and sub-kiloton devices; PM A.B. Vajpayee announced; India declared itself a nuclear weapons state.
Consequences of Pokhran-II: US and other nations imposed sanctions; India-Pakistan nuclear competition escalated; Pakistan conducted Chagai tests (5 devices, May 28, 1998); India announced No First Use doctrine. Current doctrine: No First Use (NFU); credible minimum deterrence; no first use against non-nuclear states; massive retaliation to any nuclear first strike.
Pokhran site: Thar Desert, Rajasthan — also the location of Exercise Brahmastra (Apache live-fire, April 2026).

Sodium properties relevant to FBR design: (1) Low neutron moderation cross-section — does not thermalise neutrons (PRIMARY reason); (2) High boiling point (882°C) — operates at near-atmospheric pressure (vs high-pressure water circuits in PWRs/PHWRs); (3) Excellent thermal conductivity — efficient heat transfer; (4) Low operating pressure — simplifies reactor vessel design. Sodium challenges: (1) Reacts violently with water and air (sodium fire risk — special inert gas cover needed); (2) Becomes radioactive when irradiated (Na-24, 15-hour half-life) — secondary sodium circuit used to prevent radioactive sodium from reaching turbines.
PFBR uses three circuits: Primary sodium (radioactive) → Steam Generator → Secondary sodium → Turbine steam. India’s PHWRs use heavy water (D₂O) as moderator — slows neutrons to thermal speeds for U-235 fission; completely different design philosophy.

Article 280: Finance Commission — (1) President constitutes every 5 years (or earlier); (2) Consists of a Chairman + 4 members appointed by President; (3) Qualifications as prescribed by Parliament. FC’s functions: (1) Distribution of taxes between Centre and States (vertical devolution); (2) Allocation among States of their share of divisible pool (horizontal devolution — based on FC-determined criteria); (3) Grants to States (Article 275 grants); (4) Grants to local bodies (Panchayats + ULBs). 16th FC: Chairman: Dr. Arvind Panagariya; Award period 2026-31; RLB allocation: ₹4.35 lakh crore.
Key FC concepts: Divisible pool = Centre’s net tax revenue before sharing; State share: 41% (15th FC) → to be revised by 16th FC; Vertical devolution = Centre to States; Horizontal devolution = distribution among states. Article 243I: State Finance Commission (every 5 years) — for distribution from State to local bodies.
Article 243Y: Municipal Finance Commission (similar, for ULBs).