UPSC Prelims 2018 Question Paper with Answers

In K.S. Puttaswamy v. Union of India (2017), a nine-judge Constitution Bench of the Supreme Court unanimously held that the right to privacy is a fundamental right protected as an intrinsic part of Article 21 (Right to Life and Personal Liberty) and as part of the broader freedoms guaranteed under Part III of the Constitution. The judgment overruled older rulings in M.P. Sharma (1954) and Kharak Singh (1962) that had denied privacy as a fundamental right. The Court held that privacy encompasses bodily integrity, personal autonomy, informational privacy, and dignity. Article 14 (equality) and Article 21 together provide the constitutional basis for privacy claims. This 2017 landmark ruling is extremely important for UPSC and is frequently tested in both Prelims and Mains.

The Committee on Subordinate Legislation is specifically mandated to examine and report to each House whether the powers delegated by Parliament to the executive to make rules, regulations, sub-rules, and bye-laws are being exercised properly and within the scope of such delegation. It acts as a check on the growing tendency of delegated legislation and scrutinises whether the rules are within the parent act's mandate, not unreasonable, and do not impose taxes or have retrospective effect. The Committee on Government Assurances examines whether assurances given by ministers in Parliament have been implemented. The Rules Committee deals with the internal rules of parliamentary procedure. The Business Advisory Committee allocates time for discussions on government bills. Each committee has a distinct mandate — UPSC tests precise knowledge of their functions.

Statement 1 is correct and Statement 2 is incorrect. For Statement 1: MLA vote values vary by state because the formula is: Value of an MLA's vote = (Population of State ÷ Number of elected MLAs in the Assembly) ÷ 1000. Since states differ in population-to-MLA ratios, values differ significantly — for example, an UP MLA's vote was worth 208 in the 2022 Presidential election whereas a Sikkim MLA's vote was worth just 7. For Statement 2: The vote value of ALL elected MPs (both Lok Sabha and Rajya Sabha) is the SAME — calculated by summing all MLA votes and dividing by the total number of elected MPs. In the 2022 Presidential election this value was 700 per MP, with no distinction between Lok Sabha and Rajya Sabha MPs. The Presidential election uniquely treats both Houses equally in terms of individual MP vote value. The 1971 Census data is used for these calculations.

Both statements are correct. Statement 1 is correct: Article 361(2) provides that no criminal proceedings shall be instituted or continued against the President or the Governor of a State in any court during their term of office. Article 361(3) further provides that no process for arrest or imprisonment shall issue from any court during their term. This immunity is absolute during the tenure of the office. Statement 2 is correct: Article 158(4) provides that the emoluments, allowances and privileges of the Governor shall not be varied to his disadvantage (i.e., shall not be diminished) during the term of office. The Governor's emoluments are charged to the Consolidated Fund of the State. It is worth noting that Article 361's immunity does not extend to civil proceedings regarding acts done in personal capacity, and judicial review of official actions for mala fides is still available.

Statement 1 is correct and Statement 2 is incorrect. Statement 1 is correct: Article 179(a) provides that a Speaker of the Legislative Assembly shall vacate their office if they cease to be a member of the Assembly. This is one of three ways the Speaker vacates office: (a) ceasing to be a member, (b) resignation, or (c) removal by a resolution passed by a majority of the total members of the Assembly. Statement 2 is incorrect: Article 180(1) provides that the Speaker does NOT vacate their office upon dissolution of the Assembly. Instead, the Speaker continues to hold office until the first sitting of the newly constituted Assembly after fresh elections. This ensures continuity of the Speaker's office across dissolution. This is the opposite of the Lok Sabha Speaker's position — a critical distinction. UPSC 2018 confirmed '1 only' as the correct answer.

Statement 1 is correct and Statement 2 is incorrect. Statement 1 is correct: Parliament can add laws to the Ninth Schedule through a Constitutional amendment (requiring a special majority and state ratification in some cases), as first done by the 1st Constitutional Amendment Act, 1951 which added zamindari abolition laws. The Ninth Schedule now contains over 280 laws shielded from challenge on grounds of Fundamental Rights violations. Statement 2 is incorrect: in I.R. Coelho v. State of Tamil Nadu (2007), a nine-judge Constitution Bench of the Supreme Court held that laws added to the Ninth Schedule after April 24, 1973 (the date of the Kesavananda Bharati judgment) can be judicially reviewed if they violate the basic structure of the Constitution, including fundamental rights. Laws added before April 24, 1973 have absolute protection. This is the key post-Coelho position on the Ninth Schedule.

Under Article 356, when President's Rule is proclaimed, Article 357 provides that Parliament is empowered to exercise the legislative powers of the State Legislature. Parliament can pass laws on matters in the State List for that state during the period of President's Rule. Parliament may also authorise the President to make laws for the state (effectively allowing ordinances), but the President does not solely legislate by ordinance — Parliament assumes the primary legislative role. The State Legislature is NOT automatically dissolved under Article 356; the President may choose to suspend it (keeping it in suspended animation) rather than dissolve it — this is a significant distinction from the past practice. Laws made by Parliament under Article 357 continue in force even after the President's Rule ends, unless repealed by the State Legislature. UPSC 2018 confirmed 'Parliament exercises legislative powers' as the best description.

Only Statement 2 is correct; Statements 1 and 3 are incorrect. Statement 1 is incorrect: the Swatantra Party was founded only in 1959 and therefore could not have been in the First Lok Sabha (constituted in 1952). The Communist Party of India (CPI) won 16 seats and was the largest single opposition party in the First Lok Sabha. Statement 2 is correct: the Leader of the Opposition in Lok Sabha was formally recognized for the first time in 1969, when Ram Subhag Singh of the Congress (O) was accorded this status after the Congress party split. The Salary and Allowances of Leaders of Opposition in Parliament Act, 1977 later formally recognised the post and its emoluments. Statement 3 is incorrect: the required strength for recognition as Leader of Opposition is one-tenth of the total strength of the House (approximately 55 members in Lok Sabha with 543 seats), not 75 members. UPSC 2018 confirmed '2 only.'

The most appropriate relationship between law and liberty is captured in option B: without laws, there is no true liberty. This reflects the concept of 'positive liberty' as formulated by philosophers like John Locke and expressed in NCERT political science textbooks. In the complete absence of law (anarchy), the strongest prevail and ordinary citizens' freedoms are at the mercy of others — there is no meaningful liberty. Law provides the framework that protects individuals' freedoms from infringement by others, including the state. Option A (more laws = less liberty) reflects a libertarian view that is not the mainstream constitutional position. Option C incorrectly suggests law must be made only by people with liberty. Option D has no constitutional basis. The Indian Constitution operationalises this through Article 21 (procedure established by law) and through Fundamental Rights that are defined and circumscribed by law — liberty exists within a legal framework, not outside it. UPSC 2018 confirmed option B.

Under the Government of India Act, 1935, the residuary legislative powers (powers not enumerated in any of the three lists — Federal, Provincial, Concurrent) were vested in the Governor General, not in any legislature. This reflected British imperial intent to retain ultimate control over unenumerated matters. This is in stark contrast to the Indian Constitution (1950) where Article 248 vests residuary powers in Parliament (Union), and to the US Constitution where the 10th Amendment vests residual powers in the States and the people. In federal systems, where residuary powers lie is a crucial indicator of the balance of power: vesting them in the centre (India) indicates a stronger federation; vesting them in states (US, Australia) indicates a more decentralised federal design. The 1935 Act's vesting of residuary powers in the Governor General (an imperial appointee) illustrated the fundamentally colonial nature of that federal arrangement. UPSC 2018 confirmed 'Governor General' as the correct answer.

Both statements are incorrect. Statement 1 is wrong: Aadhaar is explicitly proof of identity and biometric data only — Section 9 of the Aadhaar (Targeted Delivery of Financial and Other Subsidies, Benefits and Services) Act, 2016 provides that Aadhaar number 'shall not be treated as a proof of citizenship or domicile.' It cannot be used as a basis for any entitlement relating to citizenship status. The Supreme Court in K.S. Puttaswamy v. Union of India (Aadhaar case, 2018) upheld Aadhaar but affirmed this limitation. Statement 2 is wrong: the UIDAI (Unique Identification Authority of India) can and does deactivate Aadhaar numbers — for example, those of deceased persons, duplicate numbers, or numbers obtained fraudulently. By 2017, approximately 81 lakh Aadhaar numbers had been deactivated. The 2016 Act empowers UIDAI to cancel or deactivate Aadhaar numbers in specified circumstances. UPSC 2018 confirmed 'neither 1 nor 2.'

All three are correct standard definitions of fiscal deficit concepts. Primary Deficit = Fiscal Deficit − Net Interest Payments; it shows the gap between government expenditure (excluding interest) and receipts, indicating how much the government needs to borrow for current operations beyond servicing past debt (Statement 1 correct). Revenue Deficit = Total Revenue Expenditure − Total Revenue Receipts; a positive revenue deficit means the government must borrow even to meet its routine, non-capital expenditure — a sign of fiscal stress (Statement 2 correct). Zero primary deficit means Primary Deficit = 0, so Fiscal Deficit = Net Interest Payments; the government only borrows to pay interest on its accumulated debt and not for fresh spending, which is considered a healthier fiscal position (Statement 3 correct). These three deficits — revenue, fiscal, and primary — form the "trilogy of deficits" and are fundamental FRBM Act (2003) compliance metrics. India targets reducing the fiscal deficit to 4.5% of GDP by FY2025-26 as per the revised FRBM glide path.

Both statements correctly reflect RBI's prudential norms for income recognition and asset classification in agricultural advances. For short-duration crops (crop season up to one year), a loan is classified as NPA if principal or interest remains overdue for two crop seasons — recognising that farmers may face a poor season but recover in the next one (Statement 1 correct). For long-duration crops (crop season exceeding one year, such as sugarcane or certain plantation crops), the NPA threshold is one crop season, since recovery periods are longer (Statement 2 correct). These agricultural NPA norms are a deliberate deviation from the standard 90-day overdue rule applied to other loans, reflecting the seasonal and weather-dependent nature of farm incomes. RBI's Master Circular on Income Recognition, Asset Classification and Provisioning Pertaining to Advances provides these specific agricultural NPA definitions. UPSC tests the two-season vs. one-season distinction as a data point candidates can easily mix up.

Under GST, cereal grains in hulled form (unpackaged/unbranded) are exempt from GST (nil-rated) — Statement 1 is exempt. Cooked chicken eggs are also nil-rated/exempt under GST — Statement 2 is exempt. Fish processed and canned, however, attracts 5% GST as a value-added processed food product; only fresh or chilled fish is exempt — Statement 3 is not exempt. Newspapers, including those carrying advertising material, are exempt from GST (though the advertising slots themselves attract 5% GST) — Statement 4 is exempt. Hence items 1, 2, and 4 are exempt but item 3 (processed/canned fish) is not, making the answer "1, 2 and 4 only." UPSC 2018 tested detailed knowledge of the GST exemption schedule — the key distinction is that processing transforms exempt goods (fresh fish) into taxable goods (canned fish), representing value addition.

e-NAM (Electronic National Agriculture Market) is a pan-India electronic trading portal launched on 14 April 2016 under the Ministry of Agriculture and Farmers' Welfare, implemented by SFAC (Small Farmers' Agribusiness Consortium). It networks existing APMC (Agriculture Produce Market Committee) mandis across India to create a unified national market for agricultural commodities, enabling farmers to sell to buyers across state boundaries through transparent online auctions (Option A correct). As of 2024, over 1,389 mandis across 23 states and 4 UTs are integrated, with 1.77 crore farmers and 2.53 lakh traders registered. e-NAM provides transparent price discovery, reduces intermediary exploitation, and enables e-payment settlement directly to farmers' accounts. It does not provide loans (Option B — that is NABARD's function), crop insurance payments (Option C — that is PMFBY), or weather advisories (Option D — that is Megha-Tropiques/ICAR functions).

Import Cover (also called months of import coverage) measures how many months of a country's imports can be financed by its current foreign exchange reserves — it is calculated as: Foreign Exchange Reserves ÷ Monthly Import Bill (Option A correct). It is a key external vulnerability indicator: the IMF recommends that countries maintain a minimum of three months of import cover as an adequate reserve buffer. India typically maintains a significantly higher buffer — around 9-11 months of import cover in recent years — demonstrating strong external sector resilience. Option B describes the Trade Deficit ratio, not Import Cover. Option C describes import absorptive capacity, which is not a standard economic indicator. Option D describes customs duty collection, entirely unrelated to Import Cover. As of late 2024, India's foreign exchange reserves were approximately $700 billion, providing comfortable import coverage. UPSC tests this because Import Cover appears frequently in RBI's currency management and external sector commentary.

Both statements are correct as per the official scheme parameters at the time of the question. PMSBY (Pradhan Mantri Suraksha Bima Yojana), launched on 1 June 2015, is an accidental insurance scheme covering death or full disability at ₹2 lakh and partial disability at ₹1 lakh, with an annual premium of ₹12 (revised from the original ₹20 in 2022) — Statement 1 is correct. PMJJBY (Pradhan Mantri Jeevan Jyoti Bima Yojana), also launched in 2015, provides term life insurance of ₹2 lakh payable for death from any cause — natural, accidental, or otherwise — at an annual premium of ₹330 (revised from ₹436) — Statement 2 is correct. Both schemes are available to savings bank account holders aged 18-70 (PMSBY) and 18-50 (PMJJBY) through auto-debit from linked accounts. These three schemes — PMJDY (banking), PMSBY (accident insurance), and PMJJBY (life insurance) — together constitute the Jan Suraksha Yojana tripod for social security. Hence both are correct.

NITI Aayog does NOT have the power to allocate funds to states — this is a critical and frequently tested distinction from the Planning Commission, which had Gross Budgetary Support (plan funds) allocation power. Fund allocation to states is done by the Finance Ministry (Finance Commission devolution, centrally sponsored scheme grants) and line ministries — Statement 1 is incorrect. NITI Aayog functions as a policy think tank, providing strategic advice, designing programmes, monitoring government schemes, and making recommendations on economic and governance reforms to the Central Government — Statement 2 is correct. It also facilitates cooperative federalism through the Governing Council (including all Chief Ministers and Lt. Governors), preparing economic strategy documents (India@75, India@100 visions), and monitoring Aspirational Districts programme. The abolition of plan fund allocation authority was a deliberate design choice to transform NITI Aayog into a non-interfering advisory body, giving states greater spending autonomy under Finance Commission devolution. Hence 2 only.

Only Statement 2 is correct. Laterite soils are formed under conditions of high temperature, heavy seasonal rainfall, and intense leaching, which removes silica and calcium, leaving behind iron oxides and aluminium oxides (sesquioxides) — hence the term "laterite" from the Latin "later" (brick). Statement 1 is incorrect: while black soils do contain calcium carbonate (lime), it is alluvial soils (particularly older Bhangar alluvium with kankar nodules) that can have high lime content; black soils are richest in calcium in the Deccan but lime is not their defining highest-proportion mineral. Statement 3 is incorrect: mountain/forest soils (particularly those of the Himalayan slopes) have the highest humus content due to accumulation of organic litter; alluvial soils are generally low in organic matter and are valued for their mineral content rather than humus.

Statements 1 and 2 are correct. The Green Revolution (mid-1960s to 1980s), driven by HYV seeds developed through the collaboration of M.S. Swaminathan and Norman Borlaug, made India self-sufficient in food grains by the mid-1970s, allowing the country to exit the "ship-to-mouth" existence of PL-480 imports from the USA. The HYV seeds were primarily developed for wheat (Sonora-64, Lerma Rojo) and rice (IR-8, the "miracle rice"), which drove dramatic yield increases in Punjab, Haryana, and Western UP for wheat, and in Andhra Pradesh, Punjab, and Tamil Nadu for rice. Statement 3 is a contested claim — while critics argue the shift toward cereals reduced dietary diversity and pulse production (leading to protein deficiency), this is not a clear-cut scientific fact recognised in standard UPSC reference texts and is therefore incorrect as a definitive statement.

Tamil Nadu and coastal Andhra Pradesh receive the majority of their annual rainfall from the North-East (retreating) monsoon, which blows from the land to the sea during October–December. By the time the South-West Monsoon reaches Tamil Nadu, it has already shed most of its moisture over the Western Ghats and the rest of peninsular India, leaving the rain-shadow region of Tamil Nadu relatively dry during June–September. The North-East monsoon picks up moisture over the Bay of Bengal and delivers 60–70% of Tamil Nadu's annual rainfall. Chennai and coastal Andhra Pradesh also experience significant cyclonic activity during the North-East monsoon season. Assam and West Bengal receive their rainfall primarily from the South-West monsoon; Kerala and Karnataka are the first recipients of the South-West monsoon's Arabian Sea branch; Rajasthan and Gujarat receive limited rainfall from the Western arm of the monsoon.

The Antarctic Desert is the largest desert in the world at approximately 14.2 million sq km, covering almost the entire Antarctic continent. A desert is defined by low precipitation (less than 250 mm per year), not by heat — Antarctica's interior receives less than 50 mm of precipitation per year, qualifying it as a cold polar desert. The Sahara (approximately 9.2 million sq km) is the largest HOT desert, and this distinction — between the overall largest desert (Antarctic) and the largest hot desert (Sahara) — is a standard UPSC exam distinction. The Arabian Desert (~2.3 million sq km) is the world's largest subtropical desert in Asia; the Gobi (~1.3 million sq km) is a cold desert spanning northern China and Mongolia. Remembering "Antarctic > Sahara > Arabian > Gobi" in terms of size is essential for UPSC geography.

Statements 2 and 3 are correct. The Brahmaputra cuts through the Himalayas via a spectacular gorge (one of the deepest gorges in the world, exceeding 5,000 m deep near Namcha Barwa) before entering Arunachal Pradesh — this is classic antecedent drainage, where the river predates the mountains and has cut through them as the Himalayas rose. Majuli in Assam, an island in the Brahmaputra river, was certified by Guinness World Records as the world's largest freshwater river island; though its area has shrunk from about 1,255 sq km (early 20th century) to approximately 880 sq km today due to riverbank erosion, it retains recognition as the world's largest inhabited river island. Statement 1 is incorrect: the Brahmaputra (called Tsangpo in Tibet) rises from the Angsi Glacier near Chemayungdung in the Burang County of Tibet, approximately 97 km southeast of Manasarovar Lake — it does not rise from the lake itself.

'Bani Thani' is a famous painting from the Kishangarh School of Rajput painting, created by the artist Nihal Chand during the reign of Raja Sawant Singh (18th century). The painting depicts a beautiful woman (believed to be inspired by the poet-saint Vishnudas's beloved Bani Thani) with distinctive stylised features including elongated eyes and a sharp nose. It is often described as the 'Indian Mona Lisa'.

Chapchar Kut is a spring festival of Mizoram (correct). Khongjom Parba is a traditional ballad from Manipur that commemorates the Battle of Khongjom (1891) against the British (correct). Thang-Ta is a martial art and dance form that belongs to Manipur, NOT Sikkim (incorrect). Hence only pairs 1 and 2 are correctly matched.

All three factors collectively led to the introduction of English Education in India. (1) CHARTER ACT OF 1813 — CORRECT. This Act renewed the East India Company's charter for 20 years and contained the first provision for INDIAN EDUCATION — Section 43 allocated ₹1 LAKH ANNUALLY for "the revival and improvement of literature and the encouragement of the learned natives of India, and for the introduction and promotion of a knowledge of the sciences among the inhabitants of the British territories in India." This was the first formal Company commitment to spending money on Indian education. The phrasing was ambiguous about whether to teach in Indian languages (Sanskrit, Arabic, Persian) or English — leading to controversy. (2) GENERAL COMMITTEE OF PUBLIC INSTRUCTION 1823 — CORRECT. The British government constituted this committee to disburse the ₹1 lakh allocated under the 1813 Charter Act. The committee initially supported "Oriental learning" — funding traditional Sanskrit, Arabic, and Persian institutions like the Calcutta Madrasa (1781) and Sanskrit College, Banaras (1791). The committee was internally split between Orientalists (favouring Indian classical languages) and Anglicists (favouring English) — leading to the famous controversy. (3) ORIENTALIST-ANGLICIST CONTROVERSY — CORRECT. This was the famous debate of the 1830s. ORIENTALISTS like H.H. Wilson, James Princep, and others argued for promoting traditional Indian learning in classical languages. ANGLICISTS led by THOMAS BABINGTON MACAULAY argued for English-medium Western education. Macaulay's infamous "Minute on Indian Education" (February 1835) sided decisively with the Anglicists, dismissing Oriental learning ("a single shelf of a good European library was worth the whole native literature of India and Arabia"). Lord WILLIAM BENTINCK accepted Macaulay's recommendation, and his EDUCATION RESOLUTION OF 1835 made ENGLISH the medium of instruction and the language of administration. This effectively introduced systematic English education in India. The educational policy was further consolidated by Wood's Despatch of 1854 (the "Magna Carta of English Education in India"). Hence all three — Option D. UPSC 2018 official answer: D.

The ALL INDIA HOME RULE LEAGUE changed its name to SWARAJYA SABHA in April 1920 under the presidency of MAHATMA GANDHI. CONTEXT: The All India Home Rule League had been founded by ANNIE BESANT in September 1916 (parallel to Bal Gangadhar Tilak's Indian Home Rule League founded in April 1916 in Maharashtra). Both organizations had agitated for "Home Rule" — self-government within the British Empire — during World War I and after. By 1920: (a) Tilak had died on 1 August 1920, removing one of the central pillars of the moderate-extremist Home Rule movement. (b) Gandhi had become the dominant nationalist figure following the Khilafat-Non-Cooperation Movement launch. (c) The political climate had shifted from "Home Rule within the Empire" to "Swaraj" (self-rule) as a more radical demand. THE NAME CHANGE: At a session presided over by Gandhi, the All India Home Rule League was renamed the SWARAJYA SABHA (literally, "Self-Rule Council") in April 1920. The change reflected: (a) Gandhi's Hindi/Sanskritised vocabulary preference (replacing English "Home Rule"), (b) The radicalisation of nationalist demand toward outright Swaraj rather than dominion-status Home Rule, (c) The integration of the Home Rule movement into Gandhi's broader Non-Cooperation strategy. The Swarajya Sabha eventually merged with the Indian National Congress within a year, ending its separate existence — but its members and infrastructure boosted Congress's national reach. (b) Hindu Mahasabha — Founded in 1915, did not change its name in 1920. (c) South Indian Liberal Federation — Founded 1916 (later called Justice Party), opposed Brahmin domination, did not change its name. (d) Servants of India Society — Founded 1905 by Gopal Krishna Gokhale, retained its name. UPSC 2018 official answer: A.

Only pair 2 (Calcutta Madarsa - Warren Hastings) is correctly matched. (1) SANSKRIT COLLEGE AT BANARAS - WILLIAM JONES — INCORRECT. The Sanskrit College at Banaras (Varanasi) was founded in 1791 by JONATHAN DUNCAN, the Resident of Banaras at the time, NOT William Jones. The college was established to promote the study of Sanskrit, Hindu law, philosophy, and literature among Indians. WILLIAM JONES (1746-94) was a British Orientalist scholar and judge of the Calcutta Supreme Court who founded the ASIATIC SOCIETY OF BENGAL in 1784 (a different institution); he is famous for first proposing the Indo-European language family hypothesis. He died in 1794 in India. INCORRECT. (2) CALCUTTA MADARSA - WARREN HASTINGS — CORRECT. The Calcutta Madarsa (also known as Madrasa-i-Aliya, the Mohammedan College of Calcutta) was founded in 1781 by Governor-General WARREN HASTINGS. The institution was established to promote the study of Arabic and Persian languages, Islamic theology, jurisprudence, and culture, and to train Muslim civil servants for the East India Company's administration. It is one of the oldest educational institutions in India and continues to function today as the Madrasa-i-Aliya, Calcutta. CORRECT. (3) FORT WILLIAM COLLEGE - ARTHUR WELLESLEY — INCORRECT. Fort William College in Calcutta was founded in 1800 by RICHARD WELLESLEY, the Governor-General (1798-1805) — NOT Arthur Wellesley. Arthur Wellesley was Richard Wellesley's younger brother and a military commander in India during this period (he later became the Duke of Wellington, famous for defeating Napoleon at Waterloo in 1815). Richard Wellesley founded the college to train British civil servants in Indian languages, law, history, and customs. Famous teachers included William Carey (Bengali), and the college translated and printed many Indian classics. The Wellesleys are often confused — Richard was the colonial administrator, Arthur was the military hero. INCORRECT. Hence only pair 2 — Option B. UPSC 2018 official answer: B.

All four biodiversity hotspots include significant Indian territory. The Himalaya Hotspot covers the mountain ranges of North and North-East India (Uttarakhand, Himachal Pradesh, parts of J&K, Sikkim, North Bengal, Arunachal Pradesh), supporting snow leopards (Vulnerable, IUCN 2017), red pandas, and high-altitude meadows. The Indo-Burma Hotspot covers North-East India (Assam, Meghalaya, Manipur, Nagaland, etc.) — one of the world's most threatened biodiversity hotspots. The Western Ghats & Sri Lanka Hotspot covers the entire Western Ghats chain, a UNESCO World Heritage Site, home to the Nilgiri Tahr and Lion-tailed Macaque. The Sundaland Hotspot extends into the Nicobar Islands (India's southernmost territory), which geographically and ecologically belong to the Indo-Malay archipelago. Note that this hotspot is sometimes listed as three Indian hotspots (excluding Sundaland) in older UPSC material, but CI officially recognises all four as including Indian territory.

Statements 1 and 2 are correct. The Kyoto Protocol was adopted on December 11, 1997, in Kyoto, Japan, and entered into force on February 16, 2005, after Russia's ratification in November 2004 fulfilled the requirement that countries covering at least 55% of Annex I emissions had ratified it. Under the principle of Common But Differentiated Responsibilities (CBDR), only Annex I (developed) countries had legally binding emission reduction targets (averaging 5.2% below 1990 levels for the first commitment period 2008–2012); developing countries like India and China had no binding targets. Statement 3 is incorrect: the USA signed the Protocol in November 1998 (during the Clinton administration) but the Senate never ratified it. In March 2001, the Bush administration formally withdrew the USA from the Kyoto Protocol, never having ratified it — a significant blow to early global climate governance.

Only Statement 2 is correct. Statement 1 is incorrect: both the NGT and the CPCB are statutory bodies established by Acts of Parliament, not executive orders. The NGT was established under the National Green Tribunal Act, 2010, making it a specialised tribunal for fast-track resolution of environmental disputes. The CPCB was constituted under the Water (Prevention and Control of Pollution) Act, 1974 (Section 3), and its powers were extended to air quality under the Air (Prevention and Control of Pollution) Act, 1981. Statement 2 is correct: the NGT provides a specialised forum for environmental justice, with the power to grant relief, compensation, and restitution in environmental cases, thereby reducing the burden on High Courts and the Supreme Court. The CPCB's mandate (as stated in Section 16 of the Water Act) includes promoting cleanliness of streams and wells and improving the quality of air in the country — exactly as stated.

All three statements are correct. The Convention on Biological Diversity (CBD) was opened for signature at the United Nations Conference on Environment and Development (UNCED/Earth Summit) in Rio de Janeiro on June 5, 1992 (World Environment Day), and entered into force on December 29, 1993; India was among the earliest signatories. The Nagoya Protocol on Access to Genetic Resources and the Fair and Equitable Sharing of Benefits Arising from their Utilization (ABS) was adopted at COP10 in Nagoya, Japan, in October 2010, entered into force on October 12, 2014, and is a supplementary agreement to the CBD addressing the "third objective" of the Convention. India signed the Nagoya Protocol on May 11, 2011, and ratified it on October 9, 2012, becoming one of the early parties — the ratification occurred during COP-11 to the CBD hosted in Hyderabad, India.

Statements 1 and 2 are correct. Biological nitrogen fixation by bacteria (both free-living like Azotobacter and Clostridium, and symbiotic like Rhizobium) converts atmospheric dinitrogen (N₂) into ammonia and then into nitrates through nitrification by Nitrosomonas and Nitrobacter bacteria — making nitrogen available for plant uptake. Denitrification by anaerobic bacteria (like Pseudomonas and Thiobacillus) converts nitrates (NO₃⁻) back to dinitrogen (N₂) or nitrous oxide (N₂O) gas that returns to the atmosphere, completing the nitrogen cycle. Statement 3 is incorrect: leguminous plants (peas, beans, chickpea, soybean, groundnut) fix nitrogen primarily through a SYMBIOTIC relationship with Rhizobium bacteria living in specialised root nodules — not through free-living bacteria alone. Free-living nitrogen-fixing bacteria (Azotobacter, BGA) fix nitrogen independently in soil, but they are not the mechanism for leguminous plant nitrogen fixation, which depends critically on the Rhizobium-root nodule symbiosis.

All three statements are correct. Coral reefs grow best in warm (20–28°C), shallow (sunlit, < 50 m depth), clear, and nutrient-poor (oligotrophic) tropical water between 30°N and 30°S — conditions that allow maximum photosynthesis by the symbiotic zooxanthellae that power coral growth. Coral bleaching is caused by thermal or other environmental stress that disrupts the coral-zooxanthellae symbiosis: stressed corals expel the photosynthetic zooxanthellae from their tissues, turning white (bleaching); if stress persists for weeks, the coral starves and dies. Mass bleaching events linked to El Niño-driven ocean warming have killed large sections of the Great Barrier Reef (2016, 2017, 2020, 2022, 2024). The Lakshadweep Islands are classic atolls — ring-shaped coral reefs encircling a shallow lagoon, formed as coral growth kept pace with the subsidence of the volcanic seamount beneath; this is Darwin's theory of atoll formation. They are India's only atolls and host the most diverse coral ecosystems in the country.

Statements 1, 2, and 3 correctly describe wetland ecosystem services. Wetlands act as natural sponges and buffers: their ability to absorb and slowly release large quantities of water (flood mitigation) has been recognised as a critical hydrological service, with studies showing that natural wetlands can reduce flood peaks by 10–40%. Wetlands recharge groundwater aquifers when surface water percolates through their soils into underlying aquifers, sustaining baseflows in rivers during dry seasons. Peatlands (a specialised wetland type) store an estimated 550–650 Gt of carbon globally in their waterlogged, anaerobic soils — twice the carbon stored in all the world's forests, making them the world's most carbon-dense ecosystems. Statement 4 is incorrect: wetlands do not desalinate seawater; desalination (reverse osmosis or distillation) is an energy-intensive industrial process. Some brackish-water wetlands like mangroves can partially filter and moderate salinity for adjacent freshwater ecosystems, but they do not produce potable water from seawater.

Statement 1 is correct — IRNSS (operational name NavIC) consists of eight satellites: three in geostationary orbit and four in geosynchronous orbit with equatorial crossings in two planes. Statement 2 is incorrect — NavIC covers India and a region extending about 1,500 km beyond its borders, not 5,500 sq. km. Statement 3 is incorrect — NavIC provides regional, not global, coverage, and the claim about full global coverage by mid-2019 was never a stated objective.

Statement 1 is incorrect — the soil bacterium genes (barnase and barstar from Bacillus amyloliquefaciens) inserted into GM Mustard (DMH-11) confer male sterility and fertility restoration to enable hybridisation, not pest-resistance. Statement 2 is correct — these barnase/barstar genes allow controlled cross-pollination and hybridisation in an otherwise self-pollinating crop, enabling hybrid seed production. Statement 3 is incorrect — GM Mustard (Dhara Mustard Hybrid-11) was developed by a team at Delhi University led by Professor Deepak Pental, not by IARI and Punjab Agricultural University.

Statement 1 is correct — NSG membership grants access to nuclear materials, equipment, and technologies controlled under NSG guidelines for peaceful purposes, enabling civilian nuclear programmes. Statement 2 is incorrect — NSG membership does not automatically confer NPT membership; these are distinct international regimes. India, for example, has cooperated with the NSG (through the 2008 waiver) but remains outside the NPT. The NSG currently has 48 member states.

Under India's GI Act, 1999, a geographical indication tag belongs to the community/producers of the designated region, not to any individual producer, and it is explicitly non-transferable and non-assignable. This distinguishes GIs from trademarks, which are owned by individuals or companies and can be assigned or licensed. The Act is a sui generis (standalone) legislation enacted to comply with TRIPS Article 22–24, and it provides for a GI Registry under the Controller General of Patents, Designs and Trade Marks.

3D printing (additive manufacturing) applies to all five areas. Food-grade 3D printers create chocolate, sugar, and confectionery items. Bionic ears integrating electronics with a cartilage scaffold have been 3D-printed by Princeton researchers. Automotive OEMs use 3D printing for prototyping and production parts. Surgeons use patient-specific 3D-printed implants for reconstructive facial and orthopaedic procedures. Data processing (computational algorithms for slicing STL files into layers) is an intrinsic part of the 3D printing workflow.

ASEAN has FTAs with Australia-New Zealand, China, India, Japan, and South Korea — making Australia (1), China (3), India (4), and Japan (5) its free-trade partners among the listed countries. Canada and the USA do not have FTAs with ASEAN.

The Additional Protocol, if ratified by India, would bring its civilian nuclear reactors under IAEA safeguards — allowing greater international verification of non-diversion of nuclear material. India's military nuclear programme would remain outside IAEA purview. It does not automatically grant NSG membership or uranium-purchasing rights.

Statement 1 is correct: NSG membership enables access to advanced nuclear technology and materials through the group's export control framework. Statement 2 is incorrect: NSG membership does not automatically confer NPT membership. The NPT is a separate international treaty, and countries accede to it independently.

Both statements are correct. Following the suppression of the Santhal Hul (1855–56), the British colonial government created the Santhal Parganas — a separate administrative district carved out of parts of Bihar and Bengal — to allow the Santhals some degree of autonomy and prevent further unrest. The Santhal Parganas Tenancy Act was also enacted, making it illegal to transfer Santhal-held land to non-Santhals, thereby protecting tribal land rights.

Statements 2 and 3 are correct; statement 1 is incorrect. PRADHAN MANTRI KAUSHAL VIKAS YOJANA (PMKVY) is the flagship scheme for skill development in India. (1) MINISTRY — INCORRECT. PMKVY is the flagship scheme of the MINISTRY OF SKILL DEVELOPMENT AND ENTREPRENEURSHIP (MSDE), not the Ministry of Labour and Employment. The MSDE was created in November 2014 specifically to coordinate skill development efforts across India and to consolidate skill-related schemes. PMKVY was launched in July 2015. The Ministry of Labour and Employment handles labour laws, ESIC, EPFO, employment exchanges, and other labour matters — but skill development was carved out as a separate ministry portfolio in 2014. INCORRECT. (2) TRAINING SCOPE — CORRECT. PMKVY provides comprehensive training that goes beyond technical skills. The scheme components include: (a) Short Term Training in market-relevant skills, (b) Recognition of Prior Learning (RPL) for those with existing skills, (c) Special projects for vulnerable groups. The training INCLUDES soft skills (communication, teamwork), entrepreneurship development, financial literacy, and digital literacy as essential components. CORRECT. (3) NSQF ALIGNMENT — CORRECT. PMKVY explicitly aims to align the competencies of the workforce — particularly the unregulated/informal sector workforce — to the NATIONAL SKILL QUALIFICATION FRAMEWORK (NSQF). NSQF is a competency-based framework that organizes qualifications according to a series of levels of knowledge, skills, and aptitude. By bringing informal sector workers into the NSQF, PMKVY enables them to get formal recognition for their skills and access better employment opportunities. CORRECT. ACHIEVEMENTS: PMKVY 1.0 (2015-16), 2.0 (2016-20), 3.0 (2020-21), and 4.0 (2022-26) phases have collectively trained ~1.4 crore (14 million) candidates across 250+ job roles in 36 sectors. The scheme is implemented through the National Skill Development Corporation (NSDC). Hence 2 and 3 only — Option C. UPSC 2018 official answer: C.

All three statements are correct. The Enforcement Directorate under the Ministry of Finance enforces the PMLA (statement 1). Money laundering under the PMLA is a cognisable (police can arrest without warrant) and non-bailable offence, with imprisonment of three to seven years (extendable to ten years for drug offences) (statement 2). The PMLA only applies to proceeds derived from a "scheduled offence" — a list of predicate crimes defined in the schedule of the Act, including narcotics, corruption, smuggling, cybercrime, and terrorism (statement 3).

Statements 1 and 2 are correct. The BSF, raised in 1965, is deployed primarily on India's international borders with Pakistan and Bangladesh and is under the Ministry of Home Affairs. The ITBP, raised in 1962 after the India-China war, guards India's 3,488 km border with China (the Line of Actual Control). Statement 3 is incorrect: the National Security Guard (NSG) is not responsible for guarding land borders. NSG is India's premier counter-terrorism force, used for anti-hijacking operations, combating terrorism, and hostage rescue missions — not border guarding, which is handled by BSF, SSB, ITBP, and Assam Rifles.

All three statements are correct. The Multi-Agency Centre (MAC) was set up in 2001 on the recommendation of the Kargil Review Committee (chaired by K. Subrahmanyam) and the Group of Ministers' Report on Reforming the National Security System. MAC functions as a fusion centre under the Intelligence Bureau to collate, analyse, and disseminate intelligence on terrorism. Subsidiary MACs (SMACs) were established in state capitals and union territories to improve state-centre intelligence sharing in counter-terrorism operations.

POSHAN Abhiyan (National Nutrition Mission), launched in 2018 and subsuming earlier programmes under the Integrated Child Development Services (ICDS) framework, is India's flagship programme to address undernutrition comprehensively. All four components are included: supplementary nutrition provides fortified food to children under 6, pregnant women and lactating mothers; promotion of breastfeeding focuses on exclusive breastfeeding for the first six months and continued breastfeeding for two years. Treatment of severe acute malnutrition (SAM) through Nutrition Rehabilitation Centres (NRCs) and community-based management is integral to the scheme; deworming, especially through the National Deworming Day programme, is included as intestinal worms are a leading cause of micronutrient deficiency and anaemia in children. POSHAN Abhiyan uses technology (ICDS-CAS app), community mobilisation and convergence with other health programmes to achieve its targets of reducing stunting, wasting, anaemia and low birth weight. UPSC tests this to assess knowledge of India's social welfare programmes and their scope.

Haemophilia is an X-linked recessive hereditary bleeding disorder caused by deficiency of clotting factors: Haemophilia A is caused by Factor VIII deficiency (80-85% of cases) and Haemophilia B by Factor IX deficiency (Christmas disease). Affected individuals have blood that does not clot easily, leading to prolonged and excessive bleeding even from minor injuries, surgical procedures, or tooth extractions — in severe cases, spontaneous internal bleeding into joints (haemarthrosis) and muscles occurs. Since the causative genes are located on the X chromosome, males (XY) who inherit one defective X chromosome are affected, while females (XX) are typically carriers; historically it was common among European royal families. Option A (clots easily) is the opposite of the condition; options C and D (about red blood cell count) describe anaemia and polycythaemia respectively, which are unrelated conditions. Haemophilia is treated with clotting factor concentrates (recombinant Factor VIII or IX); gene therapy is an emerging curative approach. UPSC tests this to distinguish common hereditary disorders and their pathophysiology.

Statement 1 is correct: GM Mustard DMH-11 (Dhara Mustard Hybrid-11) uses the barnase-barstar-bar gene system sourced from Bacillus amyloliquefaciens, a soil bacterium — the barnase gene induces male sterility (preventing self-pollination) while the barstar gene is a restorer of fertility, together enabling cross-pollination and commercial hybrid seed production in what is naturally a self-pollinating crop. Statement 2 is incorrect: GM Mustard DMH-11 was developed by a team led by Professor Deepak Pental at Delhi University's Centre for Genetic Manipulation of Crop Plants (CGMCP), not jointly by ICAR and Punjab Agricultural University; NDDB (National Dairy Development Board) and the Department of Biotechnology provided some research support, but the primary developer is Delhi University. The GEAC (Genetic Engineering Appraisal Committee) recommended environmental release of DMH-11 in 2022. India imports large quantities of edible oil and GM mustard is expected to increase yield by approximately 25-30% over conventional varieties. Hence 1 only (option A) is the correct answer.

All three statements are correct and describe the three main types of nuclear radiation. Alpha (α) particles consist of 2 protons and 2 neutrons (identical to a helium-4 nucleus), are positively charged, and have the lowest penetrating power — they can be stopped by a sheet of paper, a few centimetres of air, or the outermost layer of human skin; however, alpha emitters ingested or inhaled are extremely dangerous because they deliver concentrated ionising radiation to internal tissues. Beta (β) particles are high-energy electrons (β−) or positrons (β+) emitted from the nucleus; they have more penetrating power than alpha particles and can penetrate skin, requiring a few millimetres of aluminium or plastic to stop; beta radiation causes radiation burns at high doses. Gamma (γ) rays are high-energy electromagnetic radiation (photons) with no mass or charge; they have the greatest penetrating power and require several centimetres of lead or thick concrete shielding; gamma sources are used in cancer radiotherapy, sterilisation of medical equipment, and industrial radiography. The inverse relationship between ionising power and penetrating power is an important concept: alpha is most ionising but least penetrating; gamma is most penetrating but least ionising per unit path.

Both statements are correct and capture the fundamental distinction between ballistic and cruise missiles. Ballistic missiles are powered only during the initial boost phase (seconds to minutes); after the engine cuts off, the warhead follows a ballistic (free-fall) trajectory governed by gravity and inertia — a high arcing path that rises into the upper atmosphere or space before re-entering and striking the target; this makes them fast but their trajectories are predictable and detectable by early warning radar systems. Cruise missiles are air-breathing, jet-propelled weapons that maintain thrust throughout their entire flight (using turbojet or turbofan engines), fly horizontally at relatively low altitudes (10-100 metres above terrain) to evade radar detection, and use GPS/terrain contour matching (TERCOM) or inertial navigation for precise guidance; BrahMos achieves this with a ramjet engine after initial solid-fuel booster acceleration. The key operational differences: ballistic missiles are faster and carry heavier payloads but are more detectable; cruise missiles are slower but highly accurate, terrain-hugging, and harder to intercept. These distinctions have direct implications for missile defence system design. UPSC tests this distinction frequently in the context of India's missile programme and national security.

All three statements are correct. Ozone (O₃) is an allotrope of oxygen — an allotrope is a different structural form of the same element; while ordinary oxygen is diatomic (O₂), ozone consists of three oxygen atoms in a bent molecular geometry with a partial double bond character; at ground level ozone is a pollutant (smog component) but in the stratosphere it is essential for life. The ozone layer (located 15-35 km altitude in the stratosphere) absorbs UV-B (280-315 nm) and UV-C (100-280 nm) radiation from the sun — without this protection, UV radiation would cause increased skin cancer, cataracts, DNA damage, immune suppression, and harm to marine phytoplankton that form the base of aquatic food chains. Chlorofluorocarbons (CFCs), used in refrigerants, aerosol propellants, and foam blowing agents, are stable in the troposphere but migrate to the stratosphere where UV radiation breaks them down releasing chlorine free radicals (Cl•); each chlorine atom can catalytically destroy over 100,000 ozone molecules before being deactivated; this mechanism was discovered by Frank Sherwood Rowland and Mario Molina (1995 Nobel Prize). The Montreal Protocol (1987) — the only UN treaty ratified by all countries — has successfully phased out CFCs, and ozone layer recovery is now on track.

All three statements are correct. The NDMP 2016 was India's first national plan for disaster management, formulated under Section 11 of the Disaster Management Act, 2005. It is explicitly aligned with the four priority areas of the Sendai Framework for Disaster Risk Reduction (2015–2030). The plan adopts a "whole of government" approach, assigning specific prevention, mitigation, preparedness, response, and recovery roles to all central ministries and departments based on their sectoral mandates.

Statements 1 and 3 are correct. IMD is the designated Regional Specialised Meteorological Centre (RSMC) for tropical cyclones in the north Indian Ocean, and is the nodal agency for issuing cyclone advisories and warnings in India. Statement 2 is incorrect: IMD classifies a "Severe Cyclonic Storm" as having sustained wind speeds between 89–117 km/h, which is actually broadly correct — however the IMD classification uses knots primarily. Statement 3 is correct: the Bay of Bengal is four to five times more active for cyclone formation than the Arabian Sea. About 80% of India's tropical cyclones originate in the Bay of Bengal, due to warmer sea surface temperatures and a more favourable moisture environment.