UPSC Prelims 2015 Question Paper with Answers

Statement 1 is correct and Statement 2 is incorrect. The 14th Finance Commission (2015–2020), chaired by Dr. Y.V. Reddy, recommended increasing the states' share in the central divisible pool from 32% (as recommended by the 13th Finance Commission) to 42% — the highest-ever jump in tax devolution, representing a landmark shift in fiscal federalism. Statement 2 is incorrect: unlike the 13th Finance Commission which provided sector-specific grants, the 14th Finance Commission significantly moved away from sector-specific or tied grants and instead recommended untied grants (grants that states can use per their own priorities), enhancing state fiscal autonomy. The 15th Finance Commission (2021–2026, chaired by N.K. Singh) reduced the states' share to 41% due to the creation of Jammu & Kashmir as a Union Territory. UPSC tested this specific contrast between the 13th and 14th Finance Commissions.

Under Articles 148–151, the CAG of India is the supreme audit institution of the country. Article 149 (read with the CAG's (Duties, Powers and Conditions of Service) Act, 1971) empowers the CAG to audit all expenditure from the Consolidated Fund of India, the Consolidated Fund of each state, receipts into and expenditure from the public accounts, and accounts of government companies. The CAG thus acts as the guardian of the public accounts of both the Union AND the States — not just the Union (option D is wrong). The CAG does not control the Consolidated Fund (the President does, on Parliament's authority — option A is wrong). The Contingency Fund of India is operated by the executive (not audited in the same manner). The CAG's reports are laid before Parliament and State Legislatures and are examined by the Public Accounts Committee. UPSC 2015 confirmed 'public accounts of the Union and the States' as the correct characterisation.

Both statements are correct. The DIRECTIVE PRINCIPLES OF STATE POLICY (DPSP) are contained in Part IV (Articles 36-51) of the Constitution. They were borrowed from the IRISH CONSTITUTION (which in turn drew from the Spanish Republican Constitution). (1) SOCIO-ECONOMIC DEMOCRACY — CORRECT. The DPSPs aim to establish "SOCIAL AND ECONOMIC DEMOCRACY" in India, complementing the POLITICAL DEMOCRACY guaranteed by Fundamental Rights (Part III). Dr. B.R. AMBEDKAR, in his speech to the Constituent Assembly (25 November 1949), said: "Political democracy cannot last unless there lies at the base of it social democracy. What does social democracy mean? It means a way of life which recognizes liberty, equality and fraternity as the principles of life." The DPSPs lay down the principles for socio-economic justice — distribution of wealth, equal opportunity, living wage, free education, public health, gender equality, environmental protection, prohibition of intoxicants, promotion of cottage industries, panchayati raj, and many others. They reflect the GANDHIAN, SOCIALIST, and LIBERAL-INTELLECTUAL ideals that the Constitution-makers wanted the state to pursue. CORRECT. (2) NOT ENFORCEABLE BY COURTS — CORRECT. Article 37 explicitly states: "The provisions contained in this Part shall NOT be enforceable by any court, but the principles therein laid down are nevertheless fundamental in the governance of the country and it shall be the duty of the State to apply these principles in making laws." Unlike Fundamental Rights (which are JUSTICIABLE — citizens can directly approach the Supreme Court under Article 32 to enforce them), DPSPs are NON-JUSTICIABLE — they are moral and political guidelines for the State, but the State cannot be sued in court for failing to implement them. However, courts have used DPSPs as INTERPRETIVE GUIDES when interpreting Fundamental Rights and statutes. The judicial trend (Kesavananda Bharati 1973, Minerva Mills 1980) has been to treat DPSPs as complementary to Fundamental Rights, not subordinate. CORRECT. Hence Both — Option C. UPSC 2015 official answer: C.

Statements 1 and 2 are correct; statement 3 is incorrect. The Rajya Sabha's role in financial matters is significantly limited but not entirely absent. (1) MONEY BILL — CORRECT. Under Article 109, the Rajya Sabha has NO POWER TO REJECT OR AMEND a Money Bill. After Lok Sabha passes a Money Bill, it is sent to the Rajya Sabha for its RECOMMENDATIONS. The Rajya Sabha must return the Bill within 14 days, with or without recommendations. Lok Sabha may accept or reject the recommendations — Lok Sabha's decision is final. If Rajya Sabha doesn't return within 14 days, the Bill is deemed passed. The Rajya Sabha's role is purely advisory in money matters. CORRECT. (2) DEMANDS FOR GRANTS — CORRECT. Under Article 113, the DEMANDS FOR GRANTS (the detailed itemized expenditure proposals of the Government to be funded from the Consolidated Fund) are submitted to the LOK SABHA only. The Rajya Sabha CANNOT vote on Demands for Grants — this power is the EXCLUSIVE PRIVILEGE of the Lok Sabha as the directly elected house representing the taxpayers. This is a key feature of Lok Sabha's financial supremacy. CORRECT. (3) DISCUSS THE ANNUAL FINANCIAL STATEMENT — INCORRECT. The ANNUAL FINANCIAL STATEMENT (the budget) under Article 112 is laid before BOTH Houses of Parliament. While only the Lok Sabha votes on Demands for Grants, the Rajya Sabha CAN DISCUSS the Annual Financial Statement (the General Discussion stage of the Budget). Both Houses participate in budget discussions; only the actual voting on grants is restricted to the Lok Sabha. So saying Rajya Sabha "cannot discuss" the budget is wrong. INCORRECT. SUMMARY OF LOK SABHA SUPREMACY in financial matters: (a) Money Bills introduced only in LS. (b) RS cannot reject/amend, only recommend. (c) Demands for Grants voted only in LS. (d) Both Houses can DISCUSS the budget. (e) President assents Money Bills (cannot return). Hence 1 and 2 only — Option B. UPSC 2015 official answer: B.

A bill referred to a JOINT SITTING of both Houses of Parliament must be passed by a SIMPLE MAJORITY of the members of both Houses present and voting. Article 108 of the Constitution provides for JOINT SITTING as a mechanism to resolve a deadlock between the Lok Sabha and the Rajya Sabha over an ORDINARY bill (NOT Money Bill or Constitution Amendment Bill, which have their own special procedures). DEADLOCK CONDITIONS for joint sitting: (a) The bill is passed by one House and rejected by the other; OR (b) The two Houses have finally disagreed on amendments to be made; OR (c) More than 6 months have elapsed since the bill was sent to the other House without being passed. PROCEDURE: (1) The President summons the joint sitting under Article 108. (2) The Speaker of the Lok Sabha presides (or in his absence, the Deputy Speaker; or in his absence, the Deputy Chairman of the Rajya Sabha). (3) The bill is debated and voted upon. (4) The bill is deemed passed by both Houses if approved by a SIMPLE MAJORITY of the total members of both Houses PRESENT AND VOTING (not the total membership). Note: The Lok Sabha has 543 members and the Rajya Sabha has 245, so the Lok Sabha's larger size gives it a structural advantage in joint sittings — the will of the Lok Sabha typically prevails. JOINT SITTINGS HELD: Only 3 times in Indian history: (a) DOWRY PROHIBITION BILL 1961, (b) BANKING SERVICE COMMISSION (REPEAL) BILL 1978, (c) PREVENTION OF TERRORISM BILL (POTA) 2002. The rarity reflects that political coordination usually resolves disagreements before reaching this stage. (b) Three-fourths — Wrong; this would be impossibly high for a deadlock-breaking mechanism. (c) Two-thirds — Wrong; that's the threshold for Constitution Amendments and impeachment, not joint sittings. (d) Absolute majority — Wrong; would still require >50% of total members which is more demanding. UPSC 2015 official answer: A.

The SUPREME COURT OF INDIA is recognized as the CUSTODIAN OF THE CONSTITUTION of India. As the highest court in the land and the final interpreter of the Constitution, the Supreme Court has the responsibility to preserve, protect, and uphold the Constitution against violations by any branch of government, any state, or any authority. KEY POWERS OF THE SUPREME COURT THAT MAKE IT THE CUSTODIAN: (1) JUDICIAL REVIEW — Under Articles 13, 32, 131-136, 141, 226, the Supreme Court can examine the constitutional validity of any law, executive order, or constitutional amendment. It can strike down laws and amendments that violate the Constitution's "BASIC STRUCTURE" — a doctrine established in KESAVANANDA BHARATI v STATE OF KERALA (1973). (2) GUARDIAN OF FUNDAMENTAL RIGHTS — Article 32 (the "heart and soul of the Constitution" per Ambedkar) gives the Supreme Court the power to issue WRITS (habeas corpus, mandamus, prohibition, certiorari, quo warranto) to enforce Fundamental Rights. (3) FINAL INTERPRETER — Article 141: The law declared by the Supreme Court is binding on all courts within the territory of India. (4) ORIGINAL JURISDICTION — Article 131: Disputes between the Centre and States, or between States, are decided by the Supreme Court. (5) ADVISORY JURISDICTION — Article 143: The President can refer any matter of constitutional importance for the Court's opinion. (a) THE PRESIDENT — Wrong. While the President is the constitutional head and takes an oath to preserve, protect, and defend the Constitution, the President is the EXECUTIVE head, not the JUDICIAL CUSTODIAN. The President's oath does not make him the "custodian" in the legal sense. (b) THE PRIME MINISTER — Wrong. The PM is the head of the executive (Council of Ministers), not the constitutional custodian. (c) LOK SABHA SECRETARIAT — Wrong. This is just an administrative body that supports the Lok Sabha; it has no constitutional or judicial role. UPSC 2015 official answer: D.

Creation of new money to finance a budget deficit — known as monetisation of the deficit or "money financing" — directly increases the money supply without any corresponding increase in the supply of goods and services, producing the highest inflationary effect. When the government borrows from the public (Option B), it transfers purchasing power from savers to the government with no net addition to total money supply, making it the least inflationary option. Borrowing from banks (Option C) can be inflationary if banks expand credit, but the effect is less direct than direct money creation. Repayment of public debt (Option A) actually reduces government spending, having a slightly contractionary or neutral effect. The ranking of inflationary impact (highest to lowest) is: D > C > B > A, a standard macroeconomic question on deficit financing methods.

Statutory Liquidity Ratio (SLR) is the proportion of NDTL (Net Demand and Time Liabilities) that banks must maintain in liquid assets like government securities; when RBI reduces SLR, banks are required to hold less in mandatory liquid assets, freeing up more funds for lending. With greater lendable resources available, competition among banks to deploy funds can lead banks to reduce lending rates, making credit cheaper for borrowers (Option C correct). Option D is incorrect — reducing SLR increases, not reduces, the liquidity available to the banking system for lending. Option A (drastic GDP growth) is an overstatement; monetary easing has gradual transmission effects. Option B (FII inflows) is not a direct or primary consequence of SLR reduction — FII flows are driven more by interest rate differentials, exchange rate expectations, and global risk appetite. SLR was 18% as of early 2026, having been reduced substantially from its peak of 38.5% in the 1990s.

A decrease in interest rates lowers the cost of borrowing, making investment more attractive for firms — cheaper loans encourage businesses to borrow and invest in capital goods, machinery, and expansion, thereby increasing investment expenditure in the economy (Option C correct). Lower interest rates also reduce the return on savings, incentivising households to save less and consume more rather than to save more (making Option D incorrect). Lower rates do not directly reduce consumption — in fact they tend to increase consumption by boosting disposable income through EMI reductions and the wealth effect (making Option A incorrect). Tax collection (Option B) is indirectly affected only if growth increases taxable income, but this is not the immediate primary effect of a rate cut. The Keynesian investment-savings framework underpins this question: interest rate cuts shift investment demand upward along the IS curve, boosting aggregate demand.

Statement 1 is not accurately stated: the overdraft facility under PMJDY (initially ₹5,000, later doubled to ₹10,000) requires multiple eligibility conditions — minimum 6 months of satisfactory account operation and banking history, and meeting the bank's creditworthiness criteria — Aadhaar linkage alone is not the sole qualifying criterion. Statement 2 is correct: PMJDY was launched on 28 August 2014 (announced by PM on 15 August 2014 from Red Fort), and eligible beneficiaries who opened accounts between 15 August 2014 and 26 January 2015 received a ₹30,000 life insurance cover in addition to the RuPay card's ₹1 lakh accident insurance. PMJDY is India's flagship financial inclusion scheme, having opened over 53 crore accounts by 2024 and channelled DBT transfers totalling lakhs of crores. The scheme, implemented under the Ministry of Finance, transformed India's banking landscape. Hence 2 only.

NITI Aayog (National Institution for Transforming India) was established on 1 January 2015 by a Cabinet resolution, replacing the Planning Commission which had existed since 15 March 1950 (originally constituted under PM Jawaharlal Nehru). The Planning Commission was dissolved because its top-down, centralised planning model was seen as unsuitable for a liberalised, market economy and incompatible with India's federal structure where states have distinct development needs. NITI Aayog serves as a policy think tank rather than a fund-allocating body — it cannot directly allocate funds to states (a key distinction from the Planning Commission which had plan fund allocation powers). The Prime Minister is the ex-officio Chairperson; unlike the Planning Commission's Deputy Chairman (a Cabinet-rank position), NITI Aayog has a Vice-Chairperson of lower rank. The Finance Commission (Option B) and Law Commission (Option C) were never merged with or replaced by NITI Aayog, and both continue to exist as separate constitutional/statutory bodies.

Only Indravati (2) and Pranahita (3) are tributaries of the Godavari. Pranahita is formed by the confluence of the Wardha, Wainganga, and Penganga rivers and is the largest tributary of the Godavari by discharge, joining it in Telangana. The Indravati originates in the Kalahandi district of Odisha and flows through Chhattisgarh before joining the Godavari. Vamsadhara is an independent river flowing between the Mahanadi and Godavari basins directly into the Bay of Bengal — it does not join the Godavari. Pennar is likewise an independent east-flowing river originating in Karnataka and draining into the Bay of Bengal through Andhra Pradesh, separate from the Godavari system entirely.

Monsoon climate is uniquely characterised by a complete, large-scale seasonal reversal of wind direction — the South-West (summer) monsoon blows from the ocean to the land from June to September, and the North-East (winter/retreating) monsoon blows from the land to the sea from October to December. This dramatic reversal is driven by the differential heating and cooling of land and sea between seasons. Equatorial climate has consistently high temperatures and rainfall throughout the year with no strong seasonal wind reversal. Mediterranean climate is characterised by dry, hot summers and wet, mild winters, caused by shifting pressure belts, not by a full reversal of wind direction. The monsoon wind reversal is what makes the Indian subcontinent so dependent on seasonal rainfall for agriculture.

Black soil (Regur or black cotton soil) is best suited for cotton cultivation in India. Formed from Deccan Trap basaltic lava, it covers about 5.46 lakh sq km across Maharashtra, Gujarat, Madhya Pradesh, Telangana, and parts of Andhra Pradesh and Karnataka. Its key properties — very high moisture-retention capacity (swells when wet, retains water long after rains), richness in calcium carbonate, potash, and magnesium, and self-ploughing ability (forming deep cracks when dry, allowing aeration) — make it ideal for cotton, which requires long periods of moisture between rainfall events. Alluvial soils are more suitable for wheat, rice, and sugarcane; laterite soils are generally acidic and deficient in nitrogen; red soils are porous and less moisture-retentive.

Teak (Tectona grandis) is the dominant and most commercially valuable species of tropical moist deciduous forests (also called monsoon forests), which receive 100–200 cm of annual rainfall and have a distinct dry season. These forests cover much of central India and the Deccan plateau — Madhya Pradesh, Chhattisgarh, Maharashtra, Odisha, and Karnataka are major teak-producing states. Teak is India's most prized timber and is valued for its durability, water resistance, and beauty; it is heavily used in shipbuilding, furniture, and construction. Tropical rain forests (Western Ghats, Andaman) receive > 200 cm rainfall and do not have a dry season; teak does not grow there as it requires seasonality. Thorn scrub forests and temperate forests have entirely different species compositions.

The Andaman and Nicobar Islands contain all three forest types: mangrove forests along the coastlines, tidal creeks, and estuaries; tropical wet evergreen forests in the interior hills of larger islands like North Andaman; and moist deciduous forests in transitional areas and on some of the smaller islands. This diversity stems from the islands' varied terrain, rainfall distribution, and island ecology. North Coastal Andhra Pradesh has significant mangroves (e.g., Krishna mangroves, a Ramsar site) but not the classic combination of all three. South-West Bengal (the Sundarbans) is overwhelmingly dominated by mangroves with limited other forest types. Southern Saurashtra is a dry/semi-arid region characterised by dry scrub and thorn forests, not mangroves or evergreen forests.

The Equatorial Counter-Current flows eastward between the North and South Equatorial Currents, which are both driven westward by the Trade Winds. The Counter-Current exists because in the Inter-Tropical Convergence Zone (ITCZ) — the equatorial belt of calm or "doldrums" — trade winds are absent or very weak, reducing the westward push on surface water. The westward-flowing equatorial currents pile up warm water against the western coasts of continents, creating a slight east-west sea surface slope; water then flows back eastward through the calm equatorial belt as the Counter-Current, driven by this pressure gradient. This phenomenon is central to understanding ENSO: during El Niño events, the trade winds weaken further, allowing the Counter-Current to intensify and bring warm water eastward across the Pacific. Earth's rotation (Coriolis) and salinity differences are secondary factors, not the primary driver of the Counter-Current.

The Strait of Hormuz separates Iran (to the north) from the Musandam Peninsula of Oman and the UAE (to the south). It connects the Persian Gulf (a semi-enclosed sea) with the Gulf of Oman and the Arabian Sea. The strait is the world's most strategically important oil transit chokepoint — approximately 20–21 million barrels per day (about 20–21% of global petroleum trade) pass through it. A closure of the Strait would severely disrupt energy supplies to Asia, Europe, and North America. Pakistan borders the Arabian Sea to the east; Saudi Arabia and Kuwait are inland Gulf states without direct access to the Strait of Hormuz itself. This strait is routinely tested in UPSC in the context of energy security and geopolitics.

The Buddha was born in Lumbini (in the republic of the Shakyas, in the foothills of Nepal), attained enlightenment at Bodh Gaya (Magadha), delivered his first sermon at Sarnath (near Varanasi, Kashi), and passed away at Kushinagar (Malla republic). Kosala was a key kingdom during his lifetime and he spent many rainy seasons there. Avanti and Gandhara were not directly associated with the core events of the Buddha's life.

Statement 1 is correct: The Rowlatt Act (1919) was based on the recommendations of the Rowlatt Committee (officially the Sedition Committee) chaired by Justice Sidney Rowlatt. Statement 2 is correct: Gandhi used the existing Home Rule League networks to organise the Rowlatt Satyagraha. Statement 3 is incorrect: The Simon Commission visited India in 1928–1929, nearly a decade after the Rowlatt Satyagraha of 1919.

Option C (Kosala and Magadha only) is CORRECT. Gautama Buddha (c. 563-483 BCE, traditional dates) lived and preached primarily in the central Gangetic plain, in the territory of two of the SIXTEEN MAHAJANAPADAS — KOSALA and MAGADHA. KOSALA: Located in present-day eastern Uttar Pradesh, with its capital at SRAVASTI. King PRASENAJIT of Kosala was a personal devotee of the Buddha. The kingdom was the site of many of the Buddha's most famous discourses; Sravasti is where the Buddha spent the most rainy seasons (vassa) during his teaching career. Lumbini (Buddha's birthplace) and Kapilavastu (his ancestral home, where the Shakya clan lived) lay within or adjacent to Kosala's sphere. MAGADHA: Located in present-day southern Bihar, with its capital first at Rajagriha (Rajgir) and later at Pataliputra. King BIMBISARA and his son AJATASHATTU were both contemporaries of the Buddha and patrons. Bimbisara donated the famous Veluvana monastery (Bamboo Grove) to the Buddhist Sangha. The Buddha attained ENLIGHTENMENT at Bodh Gaya in Magadha, and his FIRST SERMON was at Sarnath (technically in Kashi/Kosala border). The First Buddhist Council was held at Rajagriha after his death. AVANTI was located in present-day western Madhya Pradesh (capital Ujjain) — too far west; not directly associated with the Buddha's personal travels. GANDHARA was in present-day northwest Pakistan / eastern Afghanistan (Taxila/Pushkalavati) — far beyond the Buddha's travel range; Buddhism reached Gandhara only later, especially under Ashoka. UPSC 2015 official answer: C.

Option B (C. Rajagopalachari) is CORRECT. While Mahatma Gandhi led the historic DANDI MARCH (Salt Satyagraha) from Sabarmati Ashram to the coastal village of Dandi (Gujarat) in March-April 1930, parallel salt marches were organised across India to spread the civil disobedience movement. In TAMIL NADU, C. RAJAGOPALACHARI (Rajaji) led a salt march from Tiruchirappalli to VEDARANYAM on the Tanjore coast. The march began on 13 April 1930 and ended on 30 April 1930 with the symbolic breaking of the salt law on the Vedaranyam coast. Rajaji was arrested and imprisoned. ABOUT C. RAJAGOPALACHARI (1878-1972): One of the foremost Congress leaders from South India; close associate of Gandhi; later became the FIRST and ONLY INDIAN GOVERNOR-GENERAL of independent India (1948-50, after Mountbatten); served as Chief Minister of Madras Presidency (1937-39) and again of Madras State (1952-54); founded the Swatantra Party in 1959 as a free-market/conservative opposition to the Congress; awarded Bharat Ratna in 1954 (first recipient along with S. Radhakrishnan and C.V. Raman). (a) V. O. Chidambaram Pillai was the Swadeshi Steam Navigation Company founder, active much earlier (c. 1906-1908). (c) K. Kamaraj rose to prominence later, in the 1950s. (d) Annie Besant founded the Home Rule League in 1916, separate from salt satyagraha. UPSC 2015 official answer: B.

Option A (1 only) is CORRECT. Statement 1 is CORRECT. BADRUDDIN TYABJI, a Bombay-based barrister and judge of the Bombay High Court, was the THIRD PRESIDENT of the Indian National Congress and presided over the THIRD SESSION held at MADRAS in 1887. He was the FIRST MUSLIM (Mohammedan) President of the INC, an important milestone for inclusive nationalism in early Congress history. He emphasised that the Congress represented the entire Indian nation and not any one community. Statement 2 is INCORRECT. The FIRST session of the Indian National Congress was held in BOMBAY (not Calcutta) from 28-31 December 1885 at Gokuldas Tejpal Sanskrit College. It was attended by 72 delegates and presided over by W.C. BONNERJEE (a Bengali barrister practicing in Calcutta — perhaps the source of the "Calcutta" misconception). The Congress was founded by A.O. Hume (a retired British civil servant) who is rightly called its "founding father". Statement 3 is INCORRECT. The first Working Committee (Karyakarini Samiti) of the INC was formed earlier, in 1920 at the NAGPUR session under Gandhi's leadership, after the Congress Constitution was drafted by Gandhiji and adopted at the same session. It was a 15-member body. The 1921 dating in the question is wrong. INC founding details: Founded 28 December 1885; A.O. Hume; first president W.C. Bonnerjee; first session in Bombay; 72 delegates. UPSC 2015 official answer: A.

Option A is CORRECT. KALAMKARI literally means "PEN WORK" (Kalam = pen, Kari = craftsmanship) — it is a traditional ART OF HAND-PAINTING (or block-printing) on COTTON TEXTILES practiced in ANDHRA PRADESH and TELANGANA. The art form is over 3,000 years old and traces its origins to the patronage of temples and royal courts. There are TWO MAJOR STYLES of Kalamkari, both recognised with GI (Geographical Indication) tags: (1) SRIKALAHASTI STYLE (Andhra Pradesh) — entirely hand-painted using a tamarind twig "kalam" (pen). Themes are predominantly RELIGIOUS — depicting scenes from the Ramayana, Mahabharata, Puranas, and lives of Hindu deities. The style flourished under temple patronage as scrolls (pata) used in narrative storytelling. (2) MACHILIPATNAM STYLE (Andhra Pradesh) — primarily uses HAND BLOCK PRINTING. Patterns include floral motifs, persian/mughal-influenced designs reflecting historical Golconda Sultanate patronage and later European trade influences. NATURAL DYES: Kalamkari uses 100% natural vegetable dyes — extracted from plants like indigo (blue), madder root (red), pomegranate skins (yellow), iron filings (black), and myrobalan (mordant). The painstaking 23-step process can take weeks for a single piece. PROMOTION: Kalamkari is supported by the Ministry of Textiles, GI-tagged, and exported globally for fashion, home furnishings, and museum collections. (b) WRONG — drums are different (mridangam, ghatam). (c) WRONG — manuscripts are different. (d) WRONG — wall paintings have other names (e.g., Lepakshi, Tanjore murals). UPSC 2015 official answer: A.

All three statements are correct. Project Tiger was launched on April 1, 1973, initially covering nine tiger reserves (Corbett, Kanha, Manas, Bandipur, Simlipal, Ranthambore, Palamau, Sundarbans, and Melghat) encompassing 9,115 sq km. The National Tiger Conservation Authority (NTCA) was established as a statutory authority under the Wildlife Protection Act, 1972 (through the Wildlife Protection Amendment Act, 2006), following the recommendations of the Tiger Task Force constituted after the Sariska crisis of 2004–05, where tigers were discovered to have been poached to local extinction. Jim Corbett National Park in Uttarakhand (renamed in 1957 from Hailey National Park, established 1936) was indeed the first tiger reserve designated under Project Tiger in 1973. India's tiger population has grown from approximately 1,827 (2014 census) to over 3,682 (NTCA 2022–23 census), the highest in the world.

The Ramsar Convention's definition of wetlands (Article 1.1) is intentionally broad and inclusive: "areas of marsh, fen, peatland or water, whether natural or artificial, permanent or temporary, with water that is static or flowing, fresh, brackish or salt, including areas of marine water the depth of which at low tide does not exceed six metres." This encompasses mangroves, coral reefs (within the 6 m depth limit), salt flats, rice paddies, fish ponds, brackish lagoons, and estuaries — far beyond just swamps or freshwater bodies. Coral reefs and mangroves within the 6 m tidal depth are explicitly included, making Option 2 correct. India has 82 Ramsar Wetlands of International Importance (as of 2024), more than any country in South Asia, including iconic sites like Chilika Lake, Keoladeo National Park, Wular Lake, and Point Calimere.

Statements 2 and 3 are correct. The Forest Conservation Act, 1980 (Section 2) requires prior approval of the Central Government before any State Government or authority can direct that reserved or protected forest land shall be used for any non-forest purpose, or leased out to any private individual or authority. This requirement for Central approval has been the primary mechanism preventing large-scale forest diversion. Statement 1 is incorrect: the Act does not absolutely prohibit de-reservation; it makes it subject to Central Government approval — not an absolute ban. The Scheduled Tribes and Other Traditional Forest Dwellers (Recognition of Forest Rights) Act, 2006 — commonly called the Forest Rights Act (FRA) — recognises and vests forest rights in Scheduled Tribes and other traditional forest-dwelling communities, protecting their right to cultivate, collect NTFP, graze livestock, and govern their forest resources through Gram Sabhas.

Only Statement 2 is correct. CITES Appendix I lists approximately 900+ species facing the highest risk of extinction; commercial international trade in these species is generally prohibited, with extremely limited exceptions (scientific non-commercial exchange) requiring both import and export permits. Statement 1 is incorrect: while CITES is legally binding on signatory states, it does NOT take precedence over national laws — rather, each party must implement CITES through its own domestic legislation (in India, through the Wildlife Protection Act, 1972 and its Foreign Trade Policy provisions). Statement 3 is incorrect: CITES was finalised on March 3, 1973, in Washington D.C. and opened for signature; the original signatories were mainly Western nations. India became a party to CITES in July 1976 through accession — not as a founding signatory — making March 3 "World Wildlife Day" more relevant than India's original membership date.

Statements 1 and 3 are correct. Water vapour is the most abundant greenhouse gas in the atmosphere and contributes approximately 36–70% of the natural greenhouse effect; it acts as a powerful amplifying feedback — as temperatures rise, more water evaporates, intensifying warming. Although water vapour is not directly regulated in climate policy (because it is a feedback, not a forcing), it is scientifically the most potent natural GHG. N₂O from agriculture (application of nitrogen fertilisers, which soil microbes convert to N₂O through nitrification and denitrification; also from livestock manure and rice paddies) accounts for approximately 60% of total N₂O emissions — agriculture is the dominant source. Statement 2 is incorrect: Methane (CH₄) has a Global Warming Potential (GWP) of approximately 27–30 times that of CO₂ over a 100-year horizon (AR6, IPCC 2021) and about 80 times over 20 years — meaning methane is far more potent than CO₂ per molecule, not less. CO₂ is the reference gas with GWP = 1.

Statements 2 and 3 are correct. The Snow Leopard (Panthera uncia) inhabits the high-altitude mountain ecosystems of the Himalayas and the Karakoram, found in Jammu & Kashmir, Himachal Pradesh, Uttarakhand, Sikkim, and Arunachal Pradesh; it is currently listed as Vulnerable (IUCN 2017, downlisted from Endangered) with an estimated global population of 4,000–6,500 individuals. The Nilgiri Tahr (Nilgiritragus hylocrius) is an Endangered (IUCN) mountain ungulate endemic to the Nilgiri Hills and the higher elevations of the southern Western Ghats in Tamil Nadu and Kerala; the first synchronised All-India Nilgiri Tahr census (April 2025) counted approximately 2,668 individuals. Statement 1 is incorrect: the Greater One-horned Rhinoceros (Rhinoceros unicornis) is found at multiple protected areas — Kaziranga NP (Assam, ~2,613 animals, the largest population globally), Orang NP (125), Pobitora WLS (107), Manas NP (40), Jaldapara NP (West Bengal, 287), Gorumara NP (52), and Dudhwa NP (Uttar Pradesh, 38) — not exclusively in Kaziranga.

Both statements are correct. Nanoparticles (liposomes, dendrimers, polymeric nanoparticles) can be engineered to carry drugs to specific cells — such as cancer cells — while minimising damage to healthy tissue, making targeted drug delivery possible. For gene therapy, nanoparticles serve as non-viral vectors to deliver DNA, RNA, or oligonucleotides into target cells, overcoming the immunogenicity and safety concerns associated with viral vectors. Both applications are active areas of clinical research.

All three terms — the Agreement on Agriculture (AoA), the Agreement on the Application of Sanitary and Phytosanitary (SPS) Measures, and the "Peace Clause" (Article 13 of AoA, and later the 2013 Bali Package extension) — are instruments under the World Trade Organization's Uruguay Round agreements. They govern agricultural subsidies, food safety standards (SPS), and provide temporary protection to developing countries from WTO legal challenges on public food stockholding programmes such as India's Food Security Act.

Statement 1 is CORRECT. NFC (Near Field Communication) is a SHORT-RANGE wireless communication technology that uses ELECTROMAGNETIC RADIO FIELDS to enable contactless data exchange between devices held in close proximity. It operates on the 13.56 MHz frequency. Statement 2 is INCORRECT. NFC is designed for VERY SHORT distances — typically up to about 4 cm (and never more than 10 cm). Devices need to be touched or held extremely close. The 1-metre distance described is closer to BLUETOOTH or RFID territory. Statement 3 is CORRECT. NFC supports SECURE COMMUNICATION via encryption protocols, making it suitable for sensitive applications like contactless payments (Apple Pay, Google Pay, Samsung Pay), digital ID cards, transit cards, and access control. The NFC Forum standardises encryption and secure element specifications. Statements 1 and 3 are correct. APPLICATIONS: Contactless payments (UPI Lite via NFC, RuPay/Visa/Mastercard contactless), pairing Bluetooth devices with a single tap, smart posters, identity verification, public transport ticketing (e.g., Delhi Metro's Smart Card had RFID; newer systems use NFC). NFC is built into nearly all modern smartphones. UPSC 2015 official answer: C.

ALL THREE statements are CORRECT — Option D. Statement 1 is CORRECT. The IceCube Neutrino Observatory, completed in 2010 at the Amundsen–Scott South Pole Station in Antarctica, is the WORLD'S LARGEST NEUTRINO DETECTOR by volume — it instruments approximately 1 CUBIC KILOMETRE of Antarctic ice with 5,160 digital optical modules (DOMs) attached to 86 vertical strings. Statement 2 is CORRECT. While its primary purpose is detecting high-energy astrophysical neutrinos, IceCube is also used to search for evidence of DARK MATTER — specifically Weakly Interacting Massive Particles (WIMPs) that could annihilate in the Sun or galactic centre and produce detectable neutrinos. Statement 3 is CORRECT. The DOMs are buried at depths between 1,450 m and 2,450 m BELOW the surface in the South Pole ice sheet. The deep, ultra-pure Antarctic ice serves as both the detection medium and a shield from cosmic-ray muons. HOW IT WORKS: When a neutrino occasionally interacts with an atom in the ice, it produces a charged particle (muon, electron, or tau) that travels faster than the speed of light IN ICE, emitting a faint blue Cherenkov radiation cone. The DOMs detect these photons, allowing reconstruction of the neutrino's direction and energy. KEY DISCOVERY: In 2013 IceCube detected the first high-energy astrophysical neutrinos from outside our solar system, opening the field of "neutrino astronomy". UPSC 2015 official answer: D.

Option A (1, 2 and 3 only) is CORRECT. Statements 1, 2, and 3 are all valid applications of Indian Remote Sensing (IRS) satellites: (1) ASSESSMENT OF CROP PRODUCTIVITY — IRS data feeds the FASAL project (Forecasting Agricultural output using Space, Agro-meteorology and Land based observations) and the National Crop Forecasting Centre to estimate area and yield for major crops. (2) LOCATING GROUNDWATER RESOURCES — IRS imagery is the backbone of the National Aquifer Mapping (NAQUIM) Programme of the Central Ground Water Board. (3) MINERAL EXPLORATION — Geological Survey of India uses IRS data for hyperspectral and multispectral mineral mapping. Statement 4 is INCORRECT — TELECOMMUNICATIONS is the function of GEOSTATIONARY communication satellites such as the INSAT and GSAT series, NOT remote sensing satellites which orbit in low Earth or sun-synchronous polar orbits. Statement 5 is INCORRECT — TRAFFIC STUDIES require very high temporal resolution (sub-minute revisit times) and very high spatial resolution; IRS satellites typically have revisit times of 5-24 days, far too infrequent for real-time traffic monitoring. (Modern very-high-resolution commercial satellites like Cartosat-3 and Worldview can do urban analysis, but the basic IRS series cannot monitor traffic.) ABOUT IRS: India's IRS series began with IRS-1A in 1988. Today the IRS programme includes Cartosat (cartography), Resourcesat (natural resources), Oceansat (ocean), RISAT (radar imaging), and others — making India one of the global leaders in civilian remote sensing. UPSC 2015 official answer: A.

Option D (Swine flu) is CORRECT. The H1N1 INFLUENZA A VIRUS is the strain responsible for SWINE FLU. The "H" and "N" in H1N1 stand for the two surface proteins that distinguish influenza A subtypes: HEMAGGLUTININ (H) and NEURAMINIDASE (N). H1N1 was the strain that caused the 2009 PANDEMIC (officially declared by WHO in June 2009), which originated as a novel reassortment of swine, avian, and human influenza viruses in pigs and crossed over to humans in Mexico and the USA before spreading worldwide. India experienced major H1N1 outbreaks in 2009-10 and again in 2015 (over 2,000 deaths). (a) AIDS — caused by HIV (Human Immunodeficiency Virus), a retrovirus. (b) Bird flu — caused by H5N1 (and other avian influenza A subtypes like H7N9, H9N2). (c) Dengue — caused by the dengue virus, a flavivirus transmitted by Aedes aegypti mosquitoes. SYMPTOMS of H1N1: Fever, cough, sore throat, body aches, headache, chills, fatigue. PREVENTION: Annual influenza vaccination, hand hygiene, respiratory etiquette. TREATMENT: Antiviral drugs like Oseltamivir (Tamiflu) and Zanamivir (Relenza). UPSC 2015 official answer: D.

All three terms — Agreement on Agriculture (AoA), Sanitary and Phytosanitary (SPS) Measures, and the Peace Clause — are part of WTO frameworks. The "Peace Clause" in the AoA shields developing countries from WTO challenges on food subsidies under certain conditions; it was a key issue at the 2013 Bali Ministerial.

The Mekong-Ganga Cooperation (MGC), launched in 2000, comprises India, Myanmar, Thailand, Cambodia, Laos, and Vietnam — six countries. Bangladesh and China are NOT participants. Therefore, countries 1 (Bangladesh) and 3 (China) from the list are not part of MGC, making "1 and 3 only" the correct answer.

Among the three, India is a member only of the East Asia Summit (EAS). India is NOT a member of APEC (it has been seeking membership but remains an observer candidate) and NOT a member of ASEAN (it is a dialogue partner). India joined the EAS as a founding member in 2005.

Neither statement is correct. IOR-ARC (now renamed Indian Ocean Rim Association, IORA) was established in 1997 — not recently. It is not limited to maritime security; its mandate covers trade facilitation, investment, academic cooperation, tourism, and cultural exchanges across the Indian Ocean rim.

Both the Fifth and Sixth Schedules of the Indian Constitution are designed to protect the interests of Scheduled Tribes. The Fifth Schedule governs the administration and control of Scheduled Areas and Scheduled Tribes in states other than the four northeastern states. The Sixth Schedule makes special provisions for the administration of tribal areas in Assam, Meghalaya, Tripura, and Mizoram through Autonomous District Councils, preserving tribal customs, laws, and governance.

Option C is CORRECT. The Pradhan Mantri Jan-Dhan Yojana (PMJDY) was launched on 28 August 2014 by Prime Minister Narendra Modi as a NATIONAL MISSION FOR FINANCIAL INCLUSION. Its core aim is to ensure access to financial services — banking/savings & deposit accounts, remittance, credit, insurance, and pension — to every excluded household in an affordable manner. Implemented by the Department of Financial Services, Ministry of Finance. KEY FEATURES: (i) ZERO-BALANCE basic savings bank account (BSBDA) for the unbanked; (ii) RuPay debit card with built-in ₹2 lakh accident insurance cover (₹1 lakh for accounts opened before August 2018); (iii) overdraft facility up to ₹10,000 for eligible account holders; (iv) ₹30,000 life insurance for first-time accounts opened between Aug 2014 - Jan 2015; (v) DBT (Direct Benefit Transfer) integration for subsidy delivery — became the backbone of the JAM (Jan Dhan-Aadhaar-Mobile) trinity. ACHIEVEMENTS (as of 2025): Over 53 crore Jan-Dhan accounts opened with cumulative deposits exceeding ₹2.3 lakh crore — making it the world's largest financial inclusion programme by enrolment. Set Guinness World Record in 2014 for opening 1.8 crore accounts in a single week. (a) WRONG — that is PMAY (Pradhan Mantri Awas Yojana). (b) WRONG — SHGs are promoted under DAY-NRLM. (d) WRONG — too narrow; PMJDY targets ALL unbanked households, not just marginalized communities. UPSC 2015 official answer: C.

All three statements correctly describe functions of the human liver, the largest internal organ and the body's primary metabolic hub. Statement 1 is correct: the liver carries out glycogenesis (converting glucose to glycogen for storage) and glycogenolysis (breaking glycogen back to glucose when blood sugar falls), making it central to carbohydrate metabolism. Statement 2 is correct: the liver produces approximately 500-1000 ml of bile daily, which is stored and concentrated in the gallbladder and released into the duodenum to emulsify dietary fats, enabling their digestion and absorption by lipase enzymes. Statement 3 is correct: the liver regulates blood glucose through glycogenesis, glycogenolysis, and gluconeogenesis (synthesising glucose from non-carbohydrate sources like amino acids and glycerol during fasting), working in concert with insulin and glucagon. The liver also performs over 500 other functions including detoxification, synthesis of clotting factors and plasma proteins, and storage of vitamins A, D, B12 and iron. UPSC tests liver physiology as a core human biology topic often appearing in GS Paper 1.

Statement 1 is correct: nuclear fission is the process in which a heavy atomic nucleus (typically uranium-235 or plutonium-239) is split into two or more smaller nuclei by a neutron, releasing an enormous amount of energy (per Einstein's E=mc²) along with additional neutrons that can sustain a chain reaction — this is the principle behind nuclear power plants and atomic bombs. Statement 2 is correct: nuclear fusion is the process in which two light atomic nuclei (typically isotopes of hydrogen — deuterium and tritium) are combined under extreme temperature and pressure to form a heavier nucleus (helium), releasing even more energy per unit mass than fission; this is the basis of thermonuclear (hydrogen) bombs and the focus of experimental reactors like ITER. Statement 3 is incorrect: the sun and all stars produce energy through nuclear FUSION, not fission — in the sun's core, hydrogen nuclei fuse through the proton-proton chain reaction to form helium, releasing energy as light and heat; this is why nuclear fusion is considered the "holy grail" of clean energy. Hence 1 and 2 only (option A). Nuclear power in India is governed by the Nuclear Power Corporation of India Limited (NPCIL).

All three statements correctly classify common chemical compounds by bond type. Sodium chloride (NaCl, common table salt) is a classic ionic compound formed by complete electron transfer from sodium (Na) to chlorine (Cl), creating Na⁺ and Cl⁻ ions held together by strong electrostatic attraction; this ionic structure gives NaCl its high melting point, electrical conductivity when dissolved, and crystal lattice structure. Carbon dioxide (CO₂) is a covalent compound in which carbon shares electrons with each oxygen atom through double covalent bonds (C=O); CO₂ is a non-polar molecule overall due to its linear, symmetric shape — the two polar C=O bonds cancel each other out vectorially. Water (H₂O) is a polar covalent compound — the O-H bonds are covalent (shared electron pairs) but highly polar because oxygen is far more electronegative than hydrogen, creating partial negative charge on oxygen and partial positive charges on the hydrogen atoms; the bent (V-shaped) molecular geometry prevents cancellation of bond dipoles, resulting in a net dipole moment that gives water its unique properties. Understanding ionic vs. covalent bonding and polar vs. non-polar molecules is foundational chemistry relevant to UPSC's general science section.

India's Mars Orbiter Mission (MOM), popularly known as Mangalyaan, was launched on 5 November 2013 by ISRO using PSLV-C25 and successfully entered Mars orbit on 24 September 2014, making India the first country in the world to successfully reach Mars orbit on its very first attempt — no other country or space agency had achieved this on a maiden attempt (other first-time attempts by USSR and early US missions failed). India also became the first Asian nation to reach Mars orbit and only the fourth space agency overall to do so — after the Soviet Union (1971), NASA/USA (1965), and the European Space Agency (2003). Option B is incorrect — no other Asian nation had previously reached Mars orbit; option C is incorrect — India was the fourth space agency, not the third; option D is factually impossible as no crewed mission to Mars has occurred. Mangalyaan operated for over 8 years (far exceeding its planned 6-10 month mission) before communications were lost in September 2022 when it entered an eclipse it was not designed to survive. UPSC tests Mangalyaan as a landmark achievement in India's space programme and as a matter of national pride and strategic capability.

All three statements are correct. The NDMA was constituted under Section 3 of the Disaster Management Act, 2005 and was formally constituted on 27 September 2006. The Prime Minister of India is the ex-officio Chairperson of NDMA. Under Section 3(3) of the Act, the NDMA shall consist of the Chairperson (PM) and not more than nine other members — including the Vice-Chairperson who has the status of Cabinet Minister. The remaining members have the status of Ministers of State.

All three statements are correct. INCOIS in Hyderabad houses the Indian Tsunami Early Warning Centre (ITEWC), established in 2007. The 2004 Boxing Day Tsunami (Sumatra–Andaman earthquake), which killed over 10,000 people in India alone, exposed the complete absence of an early warning system and directly led to the establishment of ITEWC. The centre is designed to issue warnings within ten minutes of detecting a significant seismic event in the Indian Ocean, using a network of seismic sensors, tide gauges, and DART (Deep-ocean Assessment and Reporting of Tsunamis) buoys.