UPSC Prelims 2012 Question Paper with Answers

An adjournment motion is introduced in Parliament to draw the attention of the House to a definite matter of urgent public importance, and needs the support of 50 members to be admitted. Because it interrupts the normal business of the House, it is regarded as an extraordinary device. It involves an element of censure against the government, which is why Rajya Sabha is not permitted to use this device. The motion needs to fulfil specific conditions: it must raise a matter that is definite, factual, urgent, and of public importance, and must not raise privileged matters or matters under judicial decision. If admitted, the discussion lasts at least 2 hours 30 minutes. UPSC 2012 official answer: A.

All three statements are incorrect. (1) Delhi and Puducherry — both Union Territories — are represented in the Rajya Sabha; Delhi has 3 seats and Puducherry has 1. The Constitution allows Parliament to provide for representation of UTs in the Council of States. (2) The Chief Election Commissioner does NOT adjudicate election disputes — election petitions are heard by the High Court of the state concerned under the Representation of the People Act, 1951, with appeals to the Supreme Court. The ECI's role is conducting elections, not deciding disputes. (3) Article 79 explicitly states that 'There shall be a Parliament for the Union which shall consist of the President and two Houses to be known respectively as the Council of States and the House of the People.' The President is an integral part of Parliament, even though they do not sit in either House. Hence the answer is D — None of the statements are correct. UPSC 2012 official answer: D.

Only statement 3 is correct. (1) The Speaker does NOT hold office during the pleasure of the President. The Speaker holds office from the date of election until immediately before the first meeting of the next Lok Sabha. The Speaker can be removed only by a resolution passed by a majority of all the then members of the Lok Sabha (effective majority) after 14 days' notice — not by the President's pleasure. (2) The Speaker MUST already be a member of the Lok Sabha at the time of election; the Constitution requires the Speaker to be elected from among the members. There is no provision for becoming a member within six months. (3) Correct — the Speaker submits the resignation letter to the Deputy Speaker, while the Deputy Speaker submits theirs to the Speaker (Article 94). UPSC 2012 official answer: B.

Article 131 of the Constitution defines the original jurisdiction of the Supreme Court strictly as disputes between (a) the Government of India and one or more States, (b) the Government of India and any State on one side and one or more other States on the other, and (c) two or more States. Therefore statements 1 and 4 are correct. Statement 2 is wrong — election disputes regarding Parliament and State Legislatures are decided by the respective High Courts under the Representation of the People Act, 1951, with appeal to the Supreme Court. Statement 3 is wrong because Article 131 explicitly excludes Union Territories from the Supreme Court's original jurisdiction; only disputes involving 'States' qualify. Note that Article 131 also excludes disputes arising out of pre-constitutional treaties and disputes specifically excluded by other constitutional provisions. UPSC 2012 official answer: C.

The Rajya Sabha has two unique constitutional powers not shared with the Lok Sabha. First, under Article 249, it can pass a resolution by a two-thirds majority of members present and voting, authorising Parliament to make laws on any subject in the State List in the national interest, for a period up to one year (renewable). Second, under Article 312, it can pass a similar two-thirds resolution to create one or more new All India Services common to the Union and the States. These powers reflect the Rajya Sabha's role as the 'Council of States' — protecting state interests and the federal balance. Option A relates to Articles 3 and 4, which require ordinary legislation in either House (not exclusive to Rajya Sabha). Options C and D do not exist as constitutional powers of the Rajya Sabha — President's election procedure can only be changed by constitutional amendment, and EC composition is governed by Article 324(2). UPSC 2012 official answer: B.

All five provisions have a bearing on education. (1) DPSPs include Article 41 (right to education), Article 45 (early childhood care and education for children below 6 — amended by 86th Amendment), and Article 46 (educational interests of SCs, STs, and weaker sections). (2) The 73rd and 74th Amendments empower Panchayats and Municipalities to manage education-related functions; the 11th Schedule (Panchayats) and 12th Schedule (Municipalities) include education subjects. (3) The Fifth Schedule, dealing with administration of Scheduled Areas and tribal areas (other than Assam, Meghalaya, Tripura, Mizoram), includes provisions for tribal education and welfare under TAC. (4) The Sixth Schedule, dealing with administration of tribal areas in Assam, Meghalaya, Tripura, and Mizoram, empowers Autonomous District Councils to make laws on primary schools and education. (5) The Seventh Schedule places 'Education' in the Concurrent List (Entry 25, after the 42nd Amendment moved it from State List), allowing both Centre and States to legislate. UPSC 2012 official answer: D.

Statement 1 is correct. Article 75 does not require the Prime Minister to be a member of Parliament at the time of appointment, but Article 75(5) provides that a Minister (which includes the Prime Minister) who is not a member of either House for any period of six consecutive months shall cease to be a Minister at the expiration of that period. So the PM must become a Member of either Lok Sabha or Rajya Sabha within six months of appointment. Statement 2 is incorrect because the same Article 75(5) allows ministers also to be non-members for up to 6 months. The Constitution permits a non-MP to be appointed as a Minister (including Prime Minister), provided they get elected/nominated to either House within 6 months — this has been used multiple times historically (e.g., Manmohan Singh as Rajya Sabha member, Indira Gandhi during her brief non-membership in 1980). UPSC 2012 official answer: A.

Only ordinary legislation (statement 1) calls for a joint sitting under Article 108. (2) Money Bills do NOT have a joint sitting provision because the Lok Sabha is supreme in money matters under Article 110: the Rajya Sabha can only recommend amendments within 14 days, but the Lok Sabha may accept or reject them; if the RS does not return the bill within 14 days, it is deemed passed. There is no possibility of a deadlock requiring joint sitting. (3) Constitution Amendment Bills under Article 368 also have no joint sitting provision — both Houses must independently pass the bill by the prescribed special majority (and ratification by half the states for entrenched provisions). If either House rejects the amendment, it fails — no joint sitting. Joint sittings have only been convened three times in Indian history: Dowry Prohibition Bill (1961), Banking Service Commission Repeal Bill (1978), and Prevention of Terrorism Bill (2002). UPSC 2012 official answer: A.

Inclusive governance refers to mechanisms that ensure equitable participation, decentralisation, and the delivery of basic public services to all citizens — especially the marginalised. (2) DISTRICT PLANNING COMMITTEES (DPCs) under Article 243ZD (74th Amendment) consolidate plans from Panchayats and Municipalities into a development plan for the entire district — directly enabling decentralised, bottom-up, participatory planning. CORRECT. (3) INCREASING PUBLIC HEALTH SPENDING expands access to healthcare for the poor who cannot afford private care; reducing health-induced impoverishment is a core inclusion goal. CORRECT. (4) STRENGTHENING THE MID-DAY MEAL (PM POSHAN) Scheme delivers nutrition to school children — the world's largest school feeding programme, addressing both nutrition and educational inclusion (especially for SC/ST/girls). CORRECT. (1) PERMITTING NBFCs TO DO BANKING is a financial sector regulatory issue — converting NBFCs into banks may improve credit availability but is not a defining feature of inclusive governance; it is a structural banking reform decision. The 2014 RBI on-tap licensing of small finance banks and payments banks did expand financial inclusion, but in 2012 this was not framed as inclusive governance. INCORRECT. Hence 2, 3 and 4 only — Option C. UPSC 2012 official answer: C.

All three functions are part of the RBI's role as a 'bankers' bank' — a classic central banking function. (1) RETAIN DEPOSITS: Commercial banks are required to maintain a portion of their deposits with the RBI as Cash Reserve Ratio (CRR) under Section 42 of the RBI Act, 1934, and additionally hold current accounts with the RBI for inter-bank settlements. CORRECT. (2) LENDER OF LAST RESORT: Under the Liquidity Adjustment Facility (LAF) — repo and reverse repo, the Marginal Standing Facility (MSF), and the Bank Rate channel, the RBI lends to scheduled commercial banks against eligible collateral when they face short-term liquidity needs. CORRECT. (3) ADVISORY ROLE: The RBI advises and guides commercial banks on monetary, foreign exchange, and credit matters through Master Directions, circulars, the Annual Monetary Policy Statement, the Financial Stability Report, and bank-specific supervisory communications. CORRECT. Hence all three — Option D. The 'banker to banks' function is one of the four core central banking roles (along with banker to government, monetary authority, and regulator/supervisor of the financial system). UPSC 2012 official answer: D.

Capital gains arise from the appreciation in the value of a CAPITAL ASSET — not from operating income. The Income Tax Act, 1961 (Section 45) defines capital gains as profits or gains arising from the transfer of a capital asset. A capital asset includes property of any kind held by an assessee — land, buildings, jewellery, paintings, sculptures, shares, mutual fund units, etc. (1) INCREASE IN SALES OF A PRODUCT generates REVENUE/operating income/business profits — taxed under 'Profits and Gains of Business or Profession', not as capital gains. INCORRECT. (2) NATURAL INCREASE IN VALUE OF PROPERTY OWNED — yes, when an immovable property (land/building) appreciates in market value, the owner has an unrealised capital gain; once sold, it becomes a realised capital gain (long-term if held >24 months for immovable property, short-term otherwise). CORRECT. (3) PAINTING APPRECIATING IN VALUE — paintings, sculptures, and works of art are explicitly classified as capital assets. When the value of a painting rises due to artist popularity or market demand and is sold, the difference between sale price and indexed cost of acquisition is capital gain. CORRECT. Hence 2 and 3 only — Option B. UPSC 2012 official answer: B.

Money supply (M3 — broad money) expands when high-powered money (the monetary base, M0) injected by the central bank into the economy increases. (1) PURCHASE OF G-SECS FROM PUBLIC by Central Bank — the RBI pays sellers in newly created reserve money (rupees), which enters circulation; through the money multiplier, this expands the broad money supply. This is expansionary OMO. CORRECT. (3) GOVERNMENT BORROWING FROM CENTRAL BANK (also called 'monetisation of deficit') — when the RBI lends directly to the government by creating new reserve money to buy primary-issued G-Secs, the government spends this in the economy, increasing money supply (this is now restricted under the FRBM Act 2003 except in exceptional circumstances). CORRECT. (2) DEPOSIT OF CURRENCY IN COMMERCIAL BANKS BY THE PUBLIC — this is just a transfer between currency-with-public (CU) and demand deposits (DD), both of which are part of M1 and M3. The total money supply does NOT change; only its composition shifts. INCORRECT. (4) SALE OF G-SECS TO PUBLIC BY CENTRAL BANK — this absorbs reserve money from the economy as the public pays the RBI, reducing M0 and through the multiplier reducing M3. This is contractionary OMO — DECREASES money supply. INCORRECT. Hence 1 and 3 — Option C. UPSC 2012 official answer: C.

Foreign Direct Investment (FDI) is defined as investment by a non-resident entity that gives it lasting interest, control, or significant influence in a domestic enterprise. The IMF/OECD threshold is 10% or more of voting stock. By contrast, Foreign Portfolio Investment (FPI) is investment in financial securities (shares, bonds) WITHOUT control intent and below the 10% threshold. (1) SUBSIDIARIES of foreign companies in India (e.g., Maruti Suzuki, Hyundai India, Samsung India) — these are wholly or majority owned by the foreign parent; clearly FDI. CORRECT. (2) MAJORITY FOREIGN EQUITY HOLDING in Indian companies — having 50%+ equity definitely constitutes FDI as it confers control. CORRECT. (3) COMPANIES EXCLUSIVELY FINANCED BY FOREIGN COMPANIES — these are 100% foreign-owned subsidiaries, the strongest form of FDI. CORRECT. (4) PORTFOLIO INVESTMENT — by definition, this is NOT FDI; it is FPI (FII before 2014) — passive investment in shares/bonds without management control, typically liquid and short-term in nature. The Foreign Exchange Management Act distinguishes between FDI and FPI for regulatory and reporting purposes. INCORRECT. Hence 1, 2 and 3 only — Option D. UPSC 2012 official answer: D.

In a floating/managed-float exchange rate system (which India follows since 1993), the price of a currency is determined by SUPPLY AND DEMAND in the foreign exchange market — not by any external authority. (1) The WORLD BANK does NOT set currency prices. The IMF (not World Bank) plays a surveillance role under Article IV consultations but does not 'decide' exchange rates either; it only urged elimination of fixed exchange rates after the Bretton Woods collapse in 1971. INCORRECT. (2) DEMAND FOR THE COUNTRY'S GOODS/SERVICES creates demand for that country's currency — exporters earn foreign currency, importers must buy the domestic currency to pay for purchases. Higher export demand → currency appreciates. CORRECT. (3) STABILITY OF THE GOVERNMENT directly affects investor confidence and capital flows. Political instability triggers capital flight, reducing demand for the currency and causing depreciation; stable governments attract FDI/FPI inflows that strengthen the currency. CORRECT. (4) ECONOMIC POTENTIAL is a vague indirect factor — it influences the demand for goods/services and capital, but does not directly 'decide' the currency price. The UPSC official key marked this statement as not directly determining the price. INCORRECT (per official key, though arguably it influences indirectly). Hence 2 and 3 only — Option B. NOTE: This question has been debated by analysts because economic potential indirectly does affect currency value; however, UPSC's official answer is B. UPSC 2012 official answer: B.

Statements 1 and 2 are correct. Odisha, Jharkhand, Chhattisgarh, and Karnataka together account for approximately 95% of India's iron ore reserves; key iron ore belts include Bailadila (Chhattisgarh), Kiriburu-Meghahatuburu (Jharkhand/Odisha), Kudremukh (Karnataka), and Singhbhum (Jharkhand). Bauxite (aluminium ore) deposits are significant in the Chota Nagpur Plateau region and also in Madhya Pradesh, Chhattisgarh, Odisha (Kalahandi), and Gujarat. Statement 3 is incorrect: India does have some nickel deposits — notably in the Sukinda valley of Odisha (which has major chromite deposits and some associated nickel-bearing ultrabasic rocks) — though commercial-scale nickel mining remains limited and India imports most of its nickel requirements.

The Panama Canal, completed and opened on August 15, 1914, is an artificial waterway approximately 82 km long across the Isthmus of Panama, linking the Pacific Ocean (through the Gulf of Panama) on the west to the Atlantic Ocean (through the Caribbean Sea) on the east. Before the canal, ships had to navigate the treacherous Drake Passage around Cape Horn at the southern tip of South America — an 8,000 km detour. The canal uses a system of three sets of locks (Gatun, Pedro Miguel, and Miraflores) to lift ships 26 metres above sea level to cross through Gatun Lake. A major expansion (the "Third Set of Locks" project) was completed in 2016, allowing New Panamax and liquefied natural gas vessels to transit. The canal handles about 5% of world trade.

All three characteristics uniquely describe equatorial (tropical rainforest) biomes. First, equatorial forests have tall, closely spaced emergent trees (30–60 m or more) with broad canopies that close out sunlight from the forest floor, creating multiple distinct layers (emergent, canopy, understorey, shrub, herb). Second, they harbour extraordinary biodiversity — Amazon and Congo rainforests can support more than 400 tree species per hectare and host over 50% of the world's species on just 7% of land area. Third, the intense competition for sunlight has driven evolution of numerous epiphytes (orchids, bromeliads, ferns, mosses growing on other plants) and lianas (woody climbers) that reach the canopy by growing on existing trees. These forests occur within 5°–10° of the equator where there is no dry season and annual rainfall exceeds 200 cm, ensuring year-round growth.

Statements 2 and 3 are common to both Buddhism and Jainism; statement 1 is exclusive to Buddhism. (1) AVOIDANCE OF EXTREMES OF PENANCE AND ENJOYMENT is the Buddhist concept of the MIDDLE PATH (Madhyama-pratipada) — a foundational principle taught by Gautama Buddha in his first sermon at Sarnath. After six years of severe austerities and self-mortification, the Buddha realised that neither extreme indulgence nor extreme asceticism leads to enlightenment. Jainism, by contrast, INSISTS on intense ascetic practices including extreme penance — Mahavira himself practised extreme austerities for 12 years before attaining kevala-jnana, and the Jain ideal of sallekhana (voluntary fasting unto death) and digambara monastic nudity reflect a commitment to extreme asceticism, NOT the middle path. INCORRECT — exclusive to Buddhism. (2) BOTH religions REJECTED THE AUTHORITY OF THE VEDAS — they are classified as nastika (heterodox) systems in Indian philosophy precisely because of this rejection. Both denied the divine origin and infallibility of Vedic scripture. CORRECT — common to both. (3) BOTH religions DENIED THE EFFICACY OF RITUALS — particularly the elaborate Vedic yajnas (sacrifices) involving animal slaughter, priestly intermediaries, and ritualistic offerings. Both argued that ethical conduct, right knowledge, and inner discipline (not external rituals) lead to liberation. CORRECT — common to both. Hence 2 and 3 only — Option B. UPSC 2012 official answer: B.

NAGARA, DRAVIDA, and VESARA are the three principal styles of classical Indian temple architecture, codified in ancient Indian architectural treatises like the Manasara, Mayamata, and Vishnudharmottara Purana. (a) NAGARA STYLE — predominant in NORTHERN India from the Himalayas to the Vindhyas. Distinguishing features: a square garbhagriha (sanctum) with a curvilinear shikhara (tower) above, a beehive-shaped or rekha-prasada profile, and a multi-storeyed pyramidal arrangement. Famous examples: Kandariya Mahadeva at Khajuraho, Lingaraja at Bhubaneswar, Sun Temple at Konark, Jagannath at Puri. (b) DRAVIDA STYLE — predominant in SOUTHERN India, especially Tamil Nadu. Distinguishing features: a vimana (pyramidal stepped tower) over the sanctum, an enclosing wall (prakara) with elaborate gopurams (entrance gateways) that often dwarf the central vimana in later temples, and a kalasa (water pot finial) atop the vimana. Famous examples: Brihadeshwara Temple at Thanjavur (Chola), Shore Temple at Mahabalipuram, Meenakshi Temple at Madurai. (c) VESARA STYLE — a HYBRID synthesis of Nagara and Dravida features that flourished in the Deccan, especially under the Chalukyas, Hoysalas, and Rashtrakutas. Combines a Nagara-like curvilinear tower with Dravida-like horizontal banding. Famous examples: Hoysala temples at Belur, Halebid, Somanathapura. Hence Option C is correct. UPSC 2012 official answer: C.

Mahatma Gandhi began his "fast unto death" on 20 September 1932 in Yerwada Central Jail (Pune), where he was imprisoned, in protest against the COMMUNAL AWARD announced by British Prime Minister Ramsay MacDonald on 16 August 1932. The Communal Award provided SEPARATE ELECTORATES for the Depressed Classes (untouchables/Scheduled Castes) — in addition to the existing separate electorates for Muslims, Sikhs, Christians, Anglo-Indians, and Europeans. Gandhi opposed separate electorates for the Depressed Classes vehemently, arguing that this would permanently divide Hindu society and isolate the depressed classes from the broader Hindu fold. He insisted that the Depressed Classes were an integral part of Hindu society and their political empowerment should come through reserved seats within the joint Hindu electorate, not separate electorates. The fast ended on 26 September 1932 with the POONA PACT, signed between Gandhi and B.R. Ambedkar (representing the Depressed Classes), which abandoned separate electorates in favour of reserved seats for the Depressed Classes within the general Hindu electorate (148 reserved seats in provincial legislatures + 18% in central). Option A (Round Table Conference) refers to the unsuccessful 1931 Second RTC, but Gandhi's fast was specifically about the Communal Award, not the RTC failure. Option B (Congress-Muslim League differences) is unrelated to the 1932 fast. UPSC 2012 official answer: C.

Statements 2 and 3 are correct; statement 1 is incorrect. (1) DHRUPAD'S ORIGIN: Dhrupad is one of the oldest forms of Hindustani classical music. Its roots go back to Vedic chanting (Sama Veda) and prabandha-gana of the medieval period. While Dhrupad reached its highest courtly refinement under the Mughal emperors (especially Akbar, who patronised the legendary Tansen), and was further nurtured by Rajput courts, it did NOT originate in Rajput kingdoms during the Mughal period — it predates both. Historians trace its codified form to the temple traditions of the 13th–15th centuries (e.g., the Vaishnavite haveli sangeet of Nathdwara). INCORRECT. (2) DEVOTIONAL CHARACTER: Dhrupad is primarily devotional and spiritual music. Its compositions invoke Hindu deities (Krishna, Rama, Shiva, Devi), praise nature, or describe ragas. Originally sung in temples before idols, then transposed to courts, Dhrupad retains a meditative, austere, and contemplative ethos — distinct from the more emotive and ornamental khayal style that later overshadowed it. CORRECT. (3) ALAP WITH SANSKRIT SYLLABLES: The slow improvisatory alap (introduction) of Dhrupad uses Sanskrit-derived nom-tom syllables — Om, Ananta, Hari, Narayana, Tarana, Tom — drawn from mantras and devotional invocations. These are not random syllables but rooted in Vedic chant traditions. CORRECT. Hence 2 and 3 only — Option B. The Dagar gharana is the most renowned school keeping Dhrupad alive today. UPSC 2012 official answer: B.

The BHUMISPARSHA MUDRA ("earth-touching gesture") is one of the most iconic hand gestures in Buddhist iconography. The right hand of the seated Buddha hangs over the right knee with palm inward and fingers pointing toward the earth, while the left hand rests in the lap palm-up in dhyana mudra (meditation gesture). According to the Buddhist tradition, this gesture commemorates the moment of the Buddha's ENLIGHTENMENT under the Bodhi tree at Bodh Gaya. As Siddhartha sat meditating, the demon MARA (representing temptation, doubt, and the bondage of samsara) tried to obstruct his enlightenment by sending his three daughters — Tanha (craving), Arati (aversion), and Raga (passion) — to seduce him, and unleashing storms, demons, and armies to terrify him. When Mara challenged the Buddha's right to enlightenment, demanding "Who will witness your enlightenment?", Siddhartha touched the earth with his right hand, calling upon the EARTH GODDESS (Sthavara, or Bhumi Devi) as his witness — testifying that he had earned the right to enlightenment through countless lifetimes of accumulated merit, virtue, and unshakeable purity in the face of Mara's temptations. The earth then trembled in confirmation, and Mara fled defeated. Hence Option B precisely captures this symbolism. Option A is incorrect because the gesture is about Mara's temptations specifically, not generic "transcendence of worldly existence". Option C confuses Buddhism with the concept of transience (anicca), which is a separate doctrine. UPSC 2012 official answer: B.

Global warming (1), habitat fragmentation (2), and biological invasion (3) are three of the five major threats to biodiversity identified by IUCN under the HIPPO framework (Habitat destruction, Invasive species, Pollution, Population growth, Over-exploitation). Global warming causes range shifts, phenological mismatches, coral bleaching, and direct habitat loss (glaciers, polar ecosystems). Habitat fragmentation isolates populations, reduces gene flow, and increases extinction risk even when total habitat area is preserved. Invasive alien species displace native species through competition, predation, and disease — they are the second-leading cause of species extinction globally. Promotion of vegetarianism (4) is not a threat — it reduces pressure on ecosystems by decreasing demand for land-intensive animal agriculture, livestock grazing, and fishmeal production, thereby potentially benefiting biodiversity.

The dramatic collapse of Indian vulture populations in the 1990s and 2000s — one of the FASTEST DECLINES of any bird species in recorded history — was primarily caused by the veterinary use of the painkiller DICLOFENAC. Three species of Gyps vultures (white-rumped vulture Gyps bengalensis, Indian vulture Gyps indicus, and slender-billed vulture Gyps tenuirostris) crashed by over 99% between 1992 and 2007 — bringing them to the brink of extinction. THE MECHANISM: Diclofenac is a non-steroidal anti-inflammatory drug (NSAID) widely used by livestock owners in India to treat sick/working cattle, buffalo, and other domestic animals. When the cattle died (whether from disease or natural causes), their carcasses were left for vultures to scavenge — a key ecosystem service in Indian villages and along religious sites. Vultures that fed on cattle carcasses containing diclofenac residues developed acute KIDNEY FAILURE (visceral gout) within hours and died. Even minute amounts (~0.1-0.7 mg/kg body weight) were lethal. The species' role as nature's sanitation workers — disposing of livestock carcasses, controlling disease spread, and supporting traditional Parsi sky burials at the Towers of Silence — was lost. CONSEQUENCES: Carcass accumulation, increase in feral dog populations, rise in rabies cases (estimated 40,000+ deaths/year linked to dog bite, partly due to vulture loss), economic losses to leather industry. RESPONSE: India BANNED the veterinary use of diclofenac in 2006 (gazette notification). Replacement drug MELOXICAM (vulture-safe) was promoted. Vulture conservation breeding centres were set up at Pinjore (Haryana), Rajabhatkhawa (West Bengal), and Rani-Guwahati (Assam). The SAVE Vultures Initiative (Saving Asia's Vultures from Extinction) was launched. By 2024, populations have stabilised but remain at <5% of their original numbers. Hence Option B. UPSC 2012 official answer: B.

Option A contains four animals all classified as ENDANGERED or worse on the IUCN Red List (as of UPSC 2012). The other options contain mixes of conservation statuses including some COMMON species. (1) GREAT INDIAN BUSTARD (Ardeotis nigriceps) — CRITICALLY ENDANGERED (worse than Endangered). Population <150 individuals in 2024, restricted mainly to Rajasthan (Desert National Park, Thar). India's state bird of Rajasthan. (2) MUSK DEER (Moschus spp.) — ENDANGERED. Hunted for their musk pods (used in perfumes and traditional medicine), now restricted to high-altitude Himalayan forests. (3) RED PANDA (Ailurus fulgens) — ENDANGERED. Found in eastern Himalayas (Sikkim, Arunachal Pradesh, parts of West Bengal); state animal of Sikkim. Less than 10,000 mature individuals globally. (4) ASIATIC WILD ASS / KHUR (Equus hemionus khur) — Was ENDANGERED at the time of UPSC 2012 (later moved to NEAR THREATENED in 2015 IUCN reassessment due to recovery from ~870 in 1976 to ~6,000+). Found exclusively in the Little Rann of Kutch in Gujarat. Why other options are wrong — they all include common, non-threatened species: (b) CHEETAL (Spotted Deer) and BLUE BULL (Nilgai) are common (Least Concern); (c) RHESUS MONKEY is common; (d) BLUE BULL, HANUMAN LANGUR, CHEETAL are all common. UPSC 2012 official answer: A.

NATIONAL PARKS in India are the STRICTEST category of protected area where NO HUMAN ACTIVITY (collection of biomass, grazing, hunting, fishing, settlement, cultivation) is permitted. Under the Wild Life (Protection) Act, 1972 (Section 35), once an area is notified as a National Park, all rights of local people — including grazing, gathering forest produce, fishing — are EXTINGUISHED after a process of settlement of claims. This makes National Parks more restrictive than Wildlife Sanctuaries. THE HIERARCHY OF PROTECTED AREAS in India (most to least restrictive): (1) NATIONAL PARKS — strictest. No human activity permitted. India has 106 National Parks. (2) WILDLIFE SANCTUARIES — Section 18 of WPA. Some human activities (limited grazing, collection of forest produce) MAY be allowed by the Chief Wildlife Warden if they don't harm wildlife. India has 567 sanctuaries. (3) CONSERVATION RESERVES (added 2003 amendment) and COMMUNITY RESERVES — buffer zones, allow more local participation. (4) BIOSPHERE RESERVES — designated by UNESCO MAB programme; have a CORE zone (national park-like, no use), BUFFER zone (restricted use), and TRANSITION zone (sustainable use by communities). They EXPLICITLY accommodate human activities, especially in the buffer and transition zones. (5) RAMSAR WETLANDS — designated under the Ramsar Convention 1971; based on the "wise use" principle, which EXPLICITLY allows sustainable human activities. Local fishing, agriculture, and other livelihood activities continue at most Ramsar Sites. Hence among the four options, only NATIONAL PARKS (Option B) prohibit biomass collection by local people. UPSC 2012 official answer: B.

Bandipur, Manas, and Sundarbans are Tiger Reserves. Bhitarkanika is NOT a Tiger Reserve — it is famous for saltwater crocodiles, mangroves, and Olive Ridley turtle nesting. (1) BANDIPUR (Karnataka) — Declared a Tiger Reserve in 1973 as one of the FIRST nine Tiger Reserves under Project Tiger. Located in the Western Ghats, contiguous with Mudumalai (Tamil Nadu), Wayanad (Kerala), and Nagarhole (Karnataka), forming the Nilgiri Biosphere Reserve and one of India's richest tiger habitats. CORRECT. (2) BHITARKANIKA (Odisha) — A National Park and Ramsar Site famous for saltwater (estuarine) crocodiles, mangrove forests, and Olive Ridley sea turtle mass nesting at nearby Gahirmatha beach. It is NOT a Tiger Reserve — there are no resident tigers here. INCORRECT. (3) MANAS (Assam) — Declared a Tiger Reserve in 1973 (also one of the original nine Project Tiger reserves). Located on the Bhutan border, also a UNESCO World Heritage Site, biosphere reserve, and elephant reserve. Famous for Pygmy Hog, Hispid Hare, and Golden Langur. CORRECT. (4) SUNDARBANS (West Bengal) — Declared a Tiger Reserve in 1973 (original Project Tiger reserve). The world's largest mangrove forest hosts the unique mangrove-adapted "swimming tigers" of the Sundarbans (Royal Bengal Tigers). UNESCO World Heritage Site. CORRECT. Hence 1, 3 and 4 only — Option B. India had 50 Tiger Reserves at the time of UPSC 2012; the number grew to 58 by 2024. UPSC 2012 official answer: B.

BIOPESTICIDES are pest control agents derived from natural materials such as living organisms, microorganisms, or natural products. They are an environmentally friendly alternative to chemical pesticides. ALL THREE categories of organisms are used as biopesticides. (1) BACTERIA — Most prominent is BACILLUS THURINGIENSIS (Bt), a soil-dwelling bacterium that produces crystal proteins (Cry toxins) lethal to specific insect orders (Lepidoptera, Coleoptera, Diptera) when ingested but harmless to mammals, birds, and most beneficial insects. Bt is the active ingredient in commercial biopesticides like Dipel and Thuricide, and is also expressed in transgenic Bt cotton, Bt brinjal, and Bt maize. Other bacterial biopesticides include Pseudomonas fluorescens (against fungal pathogens) and Bacillus subtilis. (2) FUNGI — Several entomopathogenic fungi attack and kill insect pests: BEAUVERIA BASSIANA (white muscardine) infects whiteflies, aphids, mites, mealybugs, thrips; METARHIZIUM ANISOPLIAE (green muscardine) targets locusts, grasshoppers, termites, beetles; VERTICILLIUM LECANII attacks aphids and thrips. Fungal biopesticides like TRICHODERMA species are also widely used to control plant diseases (anti-fungal biocontrol agents). (3) FLOWERING PLANTS — Several plants produce natural insecticidal compounds: NEEM (Azadirachta indica) yields AZADIRACHTIN, which acts as an insect feeding deterrent and growth regulator (commercial product: Neem oil); PYRETHRUM (Tanacetum cinerariifolium / Chrysanthemum) produces PYRETHRINS, the source of natural pyrethrum insecticide (which is also the parent compound for synthetic pyrethroids); TOBACCO (Nicotiana) yields NICOTINE, used historically; DERRIS plants yield ROTENONE; ROSY PERIWINKLE and others contribute alkaloids. Hence all three — Option D. UPSC 2012 official answer: D.

BIOMASS GASIFICATION is the thermochemical process of converting solid biomass into a gaseous fuel (called PRODUCER GAS or SYNGAS) by partial oxidation at high temperatures (700-1200°C) in a controlled-oxygen environment. All three statements are correct. (1) BIOMASS FEEDSTOCK — CORRECT. Almost any dry agricultural or forestry residue can be used: coconut shells, groundnut shells, rice husk, sawdust, wood chips, sugarcane bagasse, cotton stalks, mustard stalks, corn cobs, and other crop residues. India produces ~500 million tonnes of agricultural residue annually, much of which is otherwise burnt openly (causing pollution like Delhi NCR's post-harvest stubble smog). Gasification offers a cleaner alternative use. (2) COMBUSTIBLE GASES — CORRECT. The producer gas from biomass gasification typically contains: HYDROGEN (H₂, 15-25%), CARBON MONOXIDE (CO, 15-25%), METHANE (CH₄, 1-5%), CARBON DIOXIDE (CO₂, 5-15%), water vapour, nitrogen, and trace tars. Hydrogen and carbon monoxide are the principal COMBUSTIBLE components, providing the calorific value (4-7 MJ/Nm³). (3) INTERNAL COMBUSTION ENGINES — CORRECT. After cleaning and cooling, the producer gas can be used to fuel modified internal combustion engines (typically dual-fuel diesel engines or 100% gas spark-ignition engines) coupled to electric generators — providing rural distributed power generation. The Ministry of New and Renewable Energy (MNRE) promotes biomass gasifier programmes for rural electrification, captive power, and thermal applications. India had over 200 biomass gasifier installations totalling ~150 MW capacity by 2020. Hence all three — Option D. UPSC 2012 official answer: D.

Statements 1 and 2 are correct evidence for the expanding universe; statements 3 and 4 are not. (1) COSMIC MICROWAVE BACKGROUND (CMB) — CORRECT. In 1964-65, Arno Penzias and Robert Wilson at Bell Labs accidentally discovered a faint, uniform microwave signal coming from every direction in the sky — the COSMIC MICROWAVE BACKGROUND RADIATION. This radiation, with a temperature of ~2.725 K, is the leftover thermal radiation from the hot, dense early universe approximately 380,000 years after the Big Bang (the "surface of last scattering" when the universe became transparent to light). The CMB had been predicted theoretically by George Gamow, Ralph Alpher, and Robert Herman in 1948. Its discovery is the SECOND most important evidence for the Big Bang and confirms the universe has been expanding and cooling. Penzias and Wilson received the 1978 Nobel Prize in Physics. (2) REDSHIFT — CORRECT. In 1929, EDWIN HUBBLE observed that light from distant galaxies is shifted toward the red (longer wavelength) end of the spectrum — the "Doppler effect" for light. The further the galaxy, the greater the redshift. Hubble formulated HUBBLE'S LAW: galaxies are receding from us at speeds proportional to their distance (v = H₀ × d). This discovery — based on Vesto Slipher's earlier spectroscopic work — was the FIRST direct evidence that the universe is expanding, since galaxies are moving apart in all directions. (3) MOVEMENT OF ASTEROIDS — INCORRECT. Asteroids orbit the Sun within our solar system; their movements tell us nothing about cosmological expansion at intergalactic scales. (4) SUPERNOVA EXPLOSIONS — INCORRECT (in this context). While Type Ia supernovae are USED as "standard candles" to measure cosmic distances and DID lead to the 1998 discovery that the expansion is ACCELERATING (dark energy, Nobel 2011), the OCCURRENCE of supernovae per se is not evidence of expansion. The CMB and redshift remain the foundational evidence cited at school/UPSC level. Hence 1 and 2 — Option A. UPSC 2012 official answer: A.

The Multidimensional Poverty Index (MPI), developed by the Oxford Poverty and Human Development Initiative (OPHI) and UNDP, measures poverty across three dimensions: Education (years of schooling and school attendance), Health (child mortality and nutrition), and Living Standards (cooking fuel, sanitation, drinking water, electricity, housing, and assets). It does not include civil liberties or political freedoms, which distinguishes it from broader human development or freedom-based indices.

Statements 2 and 3 are GANDHIAN principles in the Directive Principles of State Policy (DPSP); statements 1 and 4 are NOT Gandhian. Indian constitutional scholars conventionally classify DPSPs (Articles 36-51) into three philosophical streams: SOCIALIST, GANDHIAN, and LIBERAL-INTELLECTUAL. (1) UNIFORM CIVIL CODE (Article 44) — LIBERAL-INTELLECTUAL principle. UCC seeks to replace personal laws (based on the scriptures and customs of each major religious community) with a common set governing every citizen. This reflects modern liberal-secular thinking, NOT Gandhian philosophy (Gandhi himself was wary of state-imposed uniformity in religious-personal matters and respected diverse traditions). (2) ORGANISING VILLAGE PANCHAYATS (Article 40) — GANDHIAN principle. Gandhi's vision of GRAM SWARAJ (village self-rule) — independent, self-sufficient village republics as the foundation of Indian democracy — is the philosophical basis of this article and inspired the 73rd Amendment's Panchayati Raj system. CORRECT. (3) PROMOTING COTTAGE INDUSTRIES (Article 43) — GANDHIAN principle. Gandhi's emphasis on KHADI, decentralised village industries, and self-reliant rural production (SWADESHI) directly inspired this directive. He famously promoted the spinning wheel (charkha) and handloom weaving. CORRECT. (4) WORKERS' REASONABLE LEISURE AND CULTURAL OPPORTUNITIES (Article 43, second part) — SOCIALIST principle. This reflects the workers' rights philosophy of the socialist tradition (also influenced by ILO conventions), aimed at humane working conditions, paid leave, and cultural enrichment for the working class. NOT Gandhian. OTHER GANDHIAN DPSPs: Article 46 (promotion of educational and economic interests of SCs, STs, and weaker sections), Article 47 (prohibition of intoxicating drinks), Article 48 (organisation of agriculture and animal husbandry on modern lines, including the famous prohibition of cow slaughter — explicitly Gandhian). Hence 2 and 3 only — Option B. UPSC 2012 official answer: B.

Statements 1, 2, and 4 are correct; statement 3 is incorrect. GRAPHENE is a single layer of carbon atoms arranged in a two-dimensional hexagonal honeycomb lattice — first isolated in 2004 by Andre Geim and Konstantin Novoselov at the University of Manchester (won the 2010 Nobel Prize in Physics for this work). (1) TWO-DIMENSIONAL + ELECTRICAL CONDUCTIVITY — CORRECT. Graphene is the prototype 2D material, just one atom thick. Its electrical conductivity is ~70 times higher than silicon, with electron mobility of 200,000 cm²/V·s — among the highest of any known material. Electrons in graphene behave as massless Dirac fermions, leading to unique quantum effects. (2) THINNEST BUT STRONGEST — CORRECT. Graphene is the thinnest material possible (single atomic layer, ~0.34 nm thick) yet has tensile strength of ~130 GPa — about 200 times stronger than structural steel. It is also remarkably flexible, transparent (~97.7% optical transmission), and impermeable to most gases. (3) MADE OF SILICON — INCORRECT. Graphene is made entirely of CARBON atoms (sp² hybridised), not silicon. Silicon-based 2D materials exist (silicene), but they are different from graphene. Graphene is the building block of graphite, carbon nanotubes, and fullerenes (allotropes of carbon). (4) CONDUCTING ELECTRODES — CORRECT. Graphene's combination of high electrical conductivity, optical transparency, and flexibility makes it ideal for transparent conducting electrodes in touch screens, LCDs, OLEDs (organic LEDs), and flexible solar cells — potentially replacing the expensive and brittle Indium Tin Oxide (ITO) used currently. Hence Option C — 1, 2 and 4 only. UPSC 2012 official answer: C.

Statements 1 and 3 are correct; statements 2 and 4 are incorrect (in their conventional understanding). LEAD POISONING (plumbism) is a serious public health concern, especially in children — even low levels can cause cognitive impairment, developmental delays, anemia, and kidney damage. India banned tetraethyl lead (TEL) from petrol in 2000, eliminating the largest source of urban lead exposure. However, several sources persist. (1) SMELTING UNITS — CORRECT. Industrial smelting of lead, zinc, copper, and other metals releases lead fumes and dust into the air, soil, and water. Workers and nearby communities face direct exposure. India has over 200 lead-acid battery recycling units (mostly informal/unregulated), which are major lead pollution sources. The Mailapur and Kawas areas have documented lead contamination. (2) PENS AND PENCILS — INCORRECT. The "lead" in pencils is actually GRAPHITE (a form of carbon), not the metal lead. The misnomer dates back to a confusion in the 16th century when graphite deposits were mistaken for lead ore. Modern pencils contain no lead at all. (3) PAINTS — CORRECT. Lead-based paints (containing lead chromate, lead carbonate, lead sulphate as pigments) were widely used historically for their bright colours, durability, and corrosion resistance. India regulated lead in household paints to <90 ppm only in 2016 (effective 2017). Older buildings and toys still contain lead paint. When paint flakes off and is ingested by children (peeling walls, painted toys), it causes acute lead poisoning. The US banned lead in residential paint in 1978. (4) HAIR OILS AND COSMETICS — INCORRECT (in the standard answer). While some traditional surma/kohl preparations and certain hair dyes have been found to contain lead, mainstream cosmetics in regulated markets contain only trace amounts. UPSC marked this as not a major source. (Modern testing has flagged some imported and traditional products but the 2012 answer key marked it incorrect.) Hence 1 and 3 only — Option B. UPSC 2012 official answer: B.

Only statement 1 is correct. ULTRAVIOLET (UV) WATER PURIFICATION is a chemical-free disinfection method that uses ultraviolet light (typically at 254 nm wavelength, in the UV-C range produced by mercury vapour or LED lamps) to inactivate microorganisms in water. (1) INACTIVATES/KILLS MICROORGANISMS — CORRECT. UV light at germicidal wavelengths damages the DNA and RNA of bacteria, viruses, protozoa (Giardia, Cryptosporidium), and other pathogens by forming pyrimidine dimers in nucleic acid strands. This prevents replication and renders microorganisms biologically inactive. UV is highly effective against E. coli, cholera, hepatitis, polio, rotavirus, and other waterborne pathogens. UV disinfection is widely used in municipal water treatment, household RO+UV purifiers, and aquarium/swimming pool sanitation. (2) REMOVES ODOURS — INCORRECT. UV radiation does NOT remove odours from water. Odour removal requires ACTIVATED CARBON filtration, which adsorbs dissolved organic compounds, chlorine, hydrogen sulphide, and volatile organic compounds (VOCs) responsible for tastes and smells. (3) QUICKENS SEDIMENTATION / REMOVES TURBIDITY — INCORRECT. UV does not affect sedimentation or remove suspended solids. Turbidity removal requires PHYSICAL processes like sedimentation, coagulation/flocculation (using alum, ferric chloride), and filtration (sand filters, membrane filters). In fact, HIGH TURBIDITY can SHIELD microorganisms from UV light, REDUCING UV disinfection efficiency — which is why UV is always used AFTER turbidity removal in multi-barrier water treatment systems. The complete RO+UV+UF home purifier sequence: prefilter (sediment) → activated carbon (chemicals/odour) → RO membrane (dissolved solids) → UV chamber (microbes) → mineral cartridge → final filter. Each stage handles a specific contaminant type. Hence only statement 1 — Option A. UPSC 2012 official answer: A.