2021

• Statement 1 is correct: the Governor is appointed by the Central Government on the recommendation of the Financial Sector Regulatory Appointments Search Committee, under the RBI Act.
• Statement 2 is incorrect and is the decisive statement: the power of the Centre to issue directions to the RBI in public interest flows from Section 7 of the RBI Act, 1934, a statute, and not from any provision of the Constitution. The RBI is a statutory body, not a constitutional one.
• Statement 3 is correct: the Governor's powers derive from the RBI Act. Since 1 and 3 are correct and 2 is not, the answer is (c). The question is a clean test of the statutory versus constitutional distinction, which is the single most productive discrimination in RBI questions.

• Statement 1 is incorrect: EPF coverage under the Employees Provident Funds and Miscellaneous Provisions Act, 1952 applies to establishments employing twenty or more persons in scheduled industries, so the universal claim covering all casual workers fails.
• Statement 2 is treated as correct: the working hours and overtime provisions of the Factories Act and the wage codes attach to the worker regardless of the casual nature of engagement, so a casual worker in a covered establishment is entitled to regulated hours and overtime.
• Statement 3 is correct: Section 15 of the Code on Wages, 1919 lineage provisions and the Payment of Wages Act permit the appropriate government to notify industries or establishments that must pay wages only by cheque or by credit to a bank account. Hence 2 and 3, giving (b). This item is genuinely contestable because statement 2 rests on an implied establishment coverage that the sentence does not state, and many aspirants eliminated it on the same universality logic that kills statement 1.

A recession is a demand deficient state, so the policy response must raise aggregate demand.

• Option (a) is internally inconsistent: the tax cut is expansionary but the interest rate increase is contractionary, so the two work against each other.
• Option (c) is inconsistent in the opposite direction and its tax increase directly reduces disposable income.
• Option (d) is straightforwardly contractionary and would deepen the downturn.
• Option (b) raises government expenditure, which adds directly to aggregate demand and works through the expenditure multiplier, and it is unambiguous in direction. Hence (b). The question rewards checking whether the two limbs of a compound option pull the same way.

• Statement 1 is correct: when a substitute becomes dearer, consumers switch towards this good, so its demand rises.
• Statement 2 is incorrect: a complement is consumed jointly, so a rise in the complement's price reduces consumption of the pair and therefore reduces demand for this good.
• Statement 3 is incorrect: for an inferior good the income effect is negative, so rising consumer income reduces demand.
• Statement 4 is correct by the law of demand, a movement along the demand curve. Only 1 and 4 hold, giving (a). Note the loose usage in the stem: statement 4 describes an extension of demand rather than a shift, but UPSC has treated it as an increase in quantity demanded.

• Statement 1 is incorrect: urban cooperative banks were under dual regulation, with the RBI handling banking functions and the Registrar of Cooperative Societies handling incorporation and management, and after the 2020 amendment RBI supervision is comprehensive. In neither arrangement are they supervised by local boards set up by State Governments.
• Statement 2 is correct: the Banking Regulation Act as applicable to cooperative societies permits issue of equity and preference shares, subject to RBI conditions.
• Statement 3 is correct: UCBs were brought within the purview of the Banking Regulation Act, 1949 by the amendment of 1966, which is the standard date in banking history. Hence 2 and 3, giving (b).
• Statement 2 is the hard one and most candidates had to reach the answer by confidently rejecting statement 1.

All three are correct.

• Item 1 holds because US Federal Reserve action moves global risk free rates and capital flows, and a hawkish Fed pulls foreign portfolio investment out of Indian debt, pushing domestic yields up.
• Item 2 holds because RBI policy rates, open market operations and government borrowing calendar management directly set the demand and supply of gilts.
• Item 3 holds because the nominal yield embeds inflation expectations through the Fisher relation, and the short end of the curve anchors the rest of it. Since no channel can be excluded, the answer is (d). The design is the common inclusive type where every plausible influence is genuinely operative, so candidates who look for a trap tend to over eliminate.

The operative definition is the RBI and Department of Economic Affairs classification of FDI components.

• Item 1 qualifies because foreign currency convertible bonds convert into equity and are counted within FDI.
• Item 2 qualifies in the conditional form stated, since foreign institutional investment crossing the threshold of ten per cent of paid up capital in a single company is reclassified from portfolio investment to direct investment, and the phrase with certain conditions signals exactly that.
• Item 3 qualifies because global depository receipts represent underlying equity and are treated as FDI.
• Item 4 does not qualify: non-resident external deposits are banking liabilities recorded under the capital account as NRI deposits, not as direct investment, since they carry no lasting management interest. Hence 1, 2 and 3, giving (a). The discriminator is the lasting interest and management control test that separates direct from portfolio and debt flows.

The word necessarily is the whole question.

• Statement 1 is correct because devaluation lowers the foreign currency price of exports immediately and by definition, so competitiveness improves as a matter of arithmetic.
• Statement 2 is incorrect and is a direct contradiction: devaluation reduces, not increases, the foreign value of the domestic currency.
• Statement 3 is incorrect as a necessary consequence: improvement in the trade balance depends on the Marshall Lerner condition, that the sum of the price elasticities of demand for exports and imports exceeds unity, and in the short run the J curve effect typically worsens the balance before it improves. Only statement 1 survives the necessity test, giving (a). A well constructed question that punishes memorised association of devaluation with export promotion.

All four options describe real consequences of the black economy, so the question turns on the word main from the government's own standpoint.

• Options (a) and (b) describe distortion in the pattern of investment, which is an economic cost but an indirect one.
• Option (c) describes a political consequence, and the link to regionalism is asserted rather than established.
• Option (d) identifies the fiscal consequence, the erosion of the tax base, which is the harm the state itself bears directly and the stated rationale behind the entire architecture of black money legislation, from the Black Money Act, 2015 to the Benami Transactions provisions. Hence (d). Where several options are true, the best answer is the one that matches the perspective named in the stem.

The ranking follows from what each option does to the money supply.

• Option (b) borrowing from the public transfers existing purchasing power from savers to the government, leaving broad money largely unchanged.
• Option (c) borrowing from banks is more expansionary than (b) because it can create deposits, but it still operates within the existing base money and is constrained by reserve requirements.
• Option (a) repayment of public debt does inject money into private hands and is mildly expansionary, but it does not create new money.
• Option (d) deficit monetisation creates high powered money directly, which then multiplies through the banking system, so it is unambiguously the most inflationary. Hence (d). The chain from base money to broad money to prices is the reasoning being tested.

The money multiplier is the ratio of broad money to reserve money, and in the standard formulation it falls as either the reserve ratio or the currency to deposit ratio rises.

• Option (a) raises the required reserve ratio, shrinking the multiplier.
• Option (b) raises the SLR, locking funds in government securities and again reducing the credit that a given deposit can support.
• Option (d) is irrelevant on its own, since population size does not enter the ratio.
• Option (c) is correct because a stronger banking habit means people hold a smaller fraction of money as currency and a larger fraction as bank deposits, which lowers the currency to deposit ratio and therefore raises the multiplier. Hence (c). Working from the formula rather than from intuition settles this in one step.

Demand-pull inflation arises when aggregate demand outruns aggregate supply.

• Item 1 qualifies: expansionary monetary or fiscal policy raises demand directly.
• Item 2 qualifies for the same reason, fiscal stimulus being a specific instance.
• Item 4 qualifies: higher purchasing power is the definitional driver of excess demand.
• Item 3 does not qualify: inflation indexing of wages raises the wage bill and feeds the wage price spiral from the input side, which makes it a cost-push mechanism.
• Item 5 does not qualify and is the clearest exclusion, since rising interest rates suppress consumption and investment, which is contractionary. Hence 1, 2 and 4, giving (a). Candidates who can only eliminate item 5 still reach the answer, because (a) is the only option excluding it along with item 3.

• Statement 1 is correct: retail investors can participate in the primary auction of Treasury Bills and dated government securities through the non-competitive bidding route, and holdings can be maintained in a demat account.
• Statement 2 is correct: NDS-OM is the RBI's anonymous electronic order matching platform for secondary market trading in government securities.
• Statement 3 is incorrect and is the decisive statement: CDSL was promoted by the Bombay Stock Exchange along with leading banks, not by the RBI. The RBI does not promote depositories. Hence 1 and 2, giving (b). A candidate who knows only that the RBI does not promote CDSL can eliminate (c) and (d) and is then choosing between (a) and (b) on statement 2 alone.

• Statement 1 is correct: WaterCredit is precisely the application of microfinance instruments, small affordable loans, to household water connections and sanitation.
• Statement 2 is incorrect and is the decisive statement: the initiative was launched by Water.org, the non-governmental organisation co-founded by Gary White and Matt Damon, not under the aegis of the World Health Organization and the World Bank.
• Statement 3 is correct: the explicit design philosophy is to move households from subsidy dependence to affordable credit, on the reasoning that the poor already pay high recurring costs for water and can service a loan instead. Hence 1 and 3, giving (c). This is a low frequency initiative and the practical route to the answer is scepticism about the very specific institutional attribution in statement 2.

The lender of last resort function is defined by the Bagehot principle: the central bank lends freely, against good collateral, at a penalty rate, to solvent but illiquid banks, in order to arrest a liquidity spiral.

• Item 1 is incorrect: the RBI does not lend to trade and industry bodies, and any such lending would be a commercial banking function outside its mandate.
• Item 2 is correct and is the textbook definition.
• Item 3 is incorrect: lending to government to finance deficits is deficit monetisation or ways and means advances, a separate function performed in the RBI's capacity as banker to the government, and it is not what the phrase lender of last resort denotes. Only item 2 holds, giving (b). The trap is the loose everyday reading of last resort as lending to anyone who cannot borrow elsewhere.

R2 stands for Responsible Recycling, a voluntary certification standard for the electronics recycling industry administered by SERI, covering data security, worker health and safety, and downstream accountability for exported waste streams.

• Option (b) is wrong because Ramsar site management operates through the Convention's own guidance and the Montreux Record, not through an R2 code.
• Option (c) is wrong because degraded land cultivation is governed by watershed and land restoration programmes with no such code.
• Option (d) is wrong because EIA in India runs through the EIA Notification under the Environment (Protection) Act, a statutory instrument rather than a voluntary practices code. Hence (a). The abbreviation itself is the only real clue for a candidate who has not encountered the standard, and R2 expanding to Responsible Recycling points to electronics.

The chemistry of the process decides this. Copper is extracted from sulphide ores such as chalcopyrite, so roasting and smelting drive off sulphur as sulphur dioxide, which makes statement 3 correct and is the principal air pollution concern at such plants.

• Statement 2 is correct because copper slag, the silicate residue, retains arsenic, lead and cadmium that can leach into soil and groundwater when the slag is dumped or used as fill.
• Statement 1 is incorrect: carbon monoxide is a product of incomplete combustion of carbonaceous fuel and is the signature concern of blast furnace ironmaking, not of copper smelting from sulphide ores, where carbon is not the reducing agent in the same way. Hence 2 and 3, giving (b). Reasoning from ore mineralogy rather than from a general image of a smokestack is what separates the correct answer here.

• Statement 1 is correct: furnace oil is a heavy residual fraction obtained from the bottom of the distillation column in a refinery, left after the lighter fractions are drawn off.
• Statement 2 is correct: industries and captive power plants burn it in boilers and furnaces to raise steam and generate power, which is precisely why it is regulated.
• Statement 3 is correct: being a residual fraction, it concentrates the sulphur of the parent crude, so combustion releases sulphur dioxide, and this high sulphur content is the stated ground for the restrictions imposed in the National Capital Region. All three hold, giving (d). The internal logic is consistent: a bottom of the barrel fraction is necessarily both cheap enough for industrial heat and dirty enough to be a sulphur problem.

Blue carbon is the organic carbon captured and stored by coastal and marine ecosystems, principally mangroves, salt marshes and seagrass meadows, with the ocean itself acting as the largest active carbon sink.

• Option (b) describes green carbon, the terrestrial biomass and soil pool.
• Option (c) describes fossil carbon, a geological stock that is not an active sink.
• Option (d) describes the atmospheric reservoir, which is the source rather than the sink. Only (a) locates the carbon in the marine and coastal compartment, so (a) is correct. The colour coding of carbon pools, green for terrestrial, blue for marine, brown or black for fossil, is worth teaching as a single set.

Lemongrass, of the genus Cymbopogon, yields citronella and related essential oils that mask the carbon dioxide and lactic acid cues by which mosquitoes locate hosts, and it is the standard base for natural repellents.

• Option (a) Congress grass is Parthenium hysterophorus, an invasive weed known for dermatitis and allergic rhinitis, not repellency.
• Option (b) elephant grass, Pennisetum purpureum, is a fodder and biomass crop.
• Option (d) nut grass, Cyperus rotundus, is a persistent agricultural weed with medicinal tuber uses but no repellent application. Hence (c). The genus Cymbopogon is worth fixing in memory because it also supplies citronella grass and palmarosa, all repellent bearing.

• Statement 1 is correct: the declaration was launched at the UN Climate Summit in New York in September 2014.
• Statement 2 is correct: it sets a timeline, halving natural forest loss by 2020 and ending it by 2030.
• Statement 3 is incorrect: it is a voluntary, non legally binding political declaration, which is the general character of instruments called declarations as opposed to conventions or protocols.
• Statement 4 is correct: its signatory base deliberately spans national and subnational governments, multinational companies, civil society and indigenous peoples organisations.
• Statement 5 is incorrect: India did not endorse it at inception. Hence 1, 2 and 4, giving (a). A candidate who knows only that declarations are typically non binding eliminates (b) and (c) at once, leaving (a) and (d) to be settled by India's non participation.

Magnetite, iron oxide of formula Fe3O4, forms in the environment through high temperature combustion and through frictional wear of iron bearing materials.

• Item 1 qualifies because brake pads and discs abrade at high temperature, and brake wear is a documented source of magnetite rich particulate.
• Item 2 qualifies because combustion in engines produces iron rich ultrafine particles from fuel, lubricant additives and engine wear.
• Item 4 qualifies because coal combustion in power plants releases iron oxide bearing fly ash.
• Item 3 does not qualify: a microwave oven heats by dielectric absorption within a sealed cavity and emits no particulate matter.
• Item 5 does not qualify: telephone lines are passive conductors involving neither combustion nor abrasion. Hence 1, 2 and 4, giving (b). The unifying principle, that magnetite needs either heat or friction acting on iron, resolves all five items without recall of the underlying study.

A filter feeder strains suspended particles and plankton from water passing through a specialised structure. The oyster is a bivalve mollusc that draws water across its ctenidia, trapping phytoplankton on mucus strands and moving it to the mouth by ciliary action, so option (c) is correct.

• Option (a) catfish is a bottom dwelling predator and scavenger with barbels used to locate prey, not a strainer.
• Option (b) octopus is an active cephalopod predator that seizes crabs and molluscs with its arms and beak.
• Option (d) pelican scoops fish in its gular pouch, which is bulk capture of individual prey rather than filtration of suspended matter. Hence (c). Oysters are worth teaching alongside their ecosystem service role, since a single adult filters a large volume of water daily and oyster reefs are used in coastal water quality restoration.

The Common Carbon Metric was developed under the UNEP Sustainable Buildings and Climate Initiative to provide a consistent protocol for measuring and reporting greenhouse gas emissions from the operation of buildings, expressed per square metre and per occupant, so that performance can be compared across countries.

• Option (b) is wrong because agricultural entry into emissions trading operates through mechanisms such as the Clean Development Mechanism and voluntary offset standards, not through this metric.
• Option (c) is wrong because national inventories are compiled under the UNFCCC reporting architecture and IPCC guidelines.
• Option (d) is wrong because global fossil fuel emissions are tracked through energy statistics and the Global Carbon Project, again a different instrument. Hence (a). The buildings sector is the intended clue, since it accounts for a large share of global energy use and had no standard measurement protocol before this.

• Statement 1 is correct: the Ekattarso Mahadeva temple at Mitaoli near Morena is a circular temple attributed to the Kachchhapaghata dynasty in the early eleventh century.
• Statement 2 is incorrect and is the most useful eliminator: several Chausath Yogini temples are circular, including those at Hirapur and Ranipur Jharial in Odisha, so the claim of uniqueness fails.
• Statement 3 is incorrect: yogini temples belong to Tantric Shaiva and Shakta worship, dedicated to the sixty four yoginis attendant on the goddess, not to the Vaishnava cult.
• Statement 4 is correct as phrased, since the statement asserts only that a popular belief exists about the Parliament connection, not that the belief is historically established, and that belief demonstrably does exist. Hence 1 and 4, giving (c). Note the careful drafting of statement 4: UPSC is testing whether you read the claim about a belief rather than the claim itself.

Dholavira, on Khadir Bet island in the Rann of Kachchh, is defined by its water engineering. Located between the seasonal Manhar and Mansar streams in an arid zone with no perennial river, it survived by damming those streams and channelling the water into a cascade of at least sixteen rock cut reservoirs ringing the settlement, which is unmatched at any other Harappan site.

• Option (b) Kalibangan is known for the ploughed field and fire altars.
• Option (c) Rakhigarhi is the largest Harappan site by area and yielded the well known ancient DNA sample.
• Option (d) Ropar is noted as the first site excavated after independence and for a human burial with a dog. Hence (a). The environmental logic is the memory hook: extreme aridity forced the hydraulic ingenuity.

The window is roughly the sixth century, between the collapse of imperial Gupta authority and Harsha's accession in 606.

• Item 1 is correct: the Later Guptas of Magadha continued as a regional power.
• Item 3 is correct: the Pushyabhutis of Thanesar are Harsha's own line, so they necessarily precede his rise.
• Item 4 is correct: the Maukharis of Kanauj were the dominant power in the Ganga doab and were linked to the Pushyabhutis by marriage.
• Item 6 is correct: the Maitrakas of Valabhi ruled Saurashtra through this period.
• Item 2 fails on chronology: the Paramaras of Malwa belong to the tenth and eleventh centuries.
• Item 5 fails on both chronology and geography: the Yadavas of Devagiri are a twelfth and thirteenth century Deccan dynasty, not northern India. Hence 1, 3, 4 and 6, giving (b). Eliminating the Yadavas alone removes options (a) and (d), and the Paramaras remove (c).

Tagore visited the Besant Theosophical College at Madanapalle in 1919 and there rendered Jana Gana Mana into English as The Morning Song of India, with the principal James Cousins and his wife Margaret, who set the notation still used today.

• Option (c) is therefore correct.
• Option (a) is wrong because Pingali Venkayya's flag work is associated with Machilipatnam and its presentation to Gandhi at Vijayawada in 1921.
• Option (b) is wrong because Pattabhi Sitaramaiah is associated with Masulipatnam and with his defeat by Subhas Chandra Bose at Tripuri in 1939, not with leading Quit India from Madanapalle.
• Option (d) is wrong because the Theosophical Society moved its headquarters to Adyar in Madras in 1882, having been founded in New York in 1875. Hence (c). The Theosophical link is the trap, since Madanapalle does host a Theosophical college, but hosting a college is not hosting the first headquarters.

• Pair 1 is incorrectly matched and is the decisive one: Burzahom in the Kashmir valley is a Neolithic site famous for its subterranean pit dwellings, associated dog burials with human remains, and a hunting scene engraving. It has no rock-cut shrines, which belong to sites such as Ellora, Ajanta and Mahabalipuram.
• Pair 2 is correctly matched: Chandraketugarh in the North 24 Parganas district of West Bengal is renowned for its early historic terracotta plaques and figurines.
• Pair 3 is correctly matched: Ganeshwar in the Sikar district of Rajasthan, sitting near the Khetri copper belt, yielded a very large assemblage of copper objects and is understood as a supplier of copper to the Harappan world. Hence 2 and 3, giving (d). Knowing only that Burzahom means pit dwellings eliminates (a) and (b) at once.

• Statement 1 is correct: Chengiz Khan pursued Jalaluddin Mangbarni of Khwarezm to the Indus in 1221, during Iltutmish's reign, and Iltutmish prudently declined to shelter the fugitive, sparing Delhi a Mongol invasion.
• Statement 2 is incorrect: Taimur's invasion occurred in 1398 to 1399 under Nasiruddin Mahmud Shah, the last Tughluq ruler, not under Muhammad bin Tughluq, who died in 1351.
• Statement 3 is incorrect: Vasco da Gama reached Calicut in 1498, during the reign of Narasimha Raya II of the Saluva line and the rise of the Tuluvas, whereas Deva Raya II of the Sangama dynasty died around 1446, half a century earlier. Hence (a). All three statements are of the same design, pairing an external event with a supposed contemporary Indian ruler, so the reliable method is to date the two halves separately and compare.

• Statement 1 is correct: Francis Xavier was among the original companions who founded the Society of Jesus with Ignatius of Loyola in Paris in 1534.
• Statement 3 is correct: the Feast of St Francis Xavier is observed in Goa on 3 December every year.
• Statement 2 is incorrect and is the decisive statement, hinging on a precise distinction: he died in 1552 on Shangchuan Island off the Chinese coast while attempting to enter China, and his body was subsequently brought to Goa, where it is enshrined in the Basilica of Bom Jesus and exposed for public veneration at intervals. The church exists, but the death did not occur in Goa. Hence 1 and 3, giving (c). The item rewards separating the place of death from the place of burial, which the statement deliberately conflates.

• Statement 1 is incorrect: the two schools of Hindu law are distinguished geographically, not by caste. Mitakshara, Vijnaneshvara's commentary on the Yajnavalkya Smriti, prevailed across most of India, while Dayabhaga, associated with Jimutavahana, prevailed in Bengal and Assam.
• Statement 2 is correct and states the central doctrinal difference: under Mitakshara a son acquires an interest in ancestral property by birth, creating a coparcenary in which he can demand partition during the father's lifetime, whereas under Dayabhaga the son's right arises only on the father's death, which gives the father unrestricted power of disposal while alive.
• Statement 3 is incorrect: the male and female distinction is not the basis on which the two schools divide, and Dayabhaga is in fact noted for admitting certain female heirs more readily, which is a different point from the one asserted. Hence (b). The birthright versus inheritance-on-death contrast is the single idea to fix.

• Statement 1 is incorrect: the Montagu-Chelmsford Reforms and the resulting Government of India Act, 1919 did not grant universal adult franchise to women. The franchise remained tied to property, tax and educational qualifications, and the Act left it to the provincial legislatures to decide whether women could vote at all, which several provinces then permitted on the same restricted qualifications as men.
• Statement 2 is correct: the Government of India Act, 1935 provided reserved seats for women in the provincial legislatures, a departure that followed sustained campaigning by women's organisations and the debates around the Communal Award and the Poona Pact. Hence (b). The general principle is that universal adult franchise arrived only with the Constitution in 1950, so any colonial era claim of voting rights for all is almost always wrong.

The All India Congress Committee passed the Quit India Resolution at Gowalia Tank Maidan in Bombay on 8 August 1942, and Gandhi delivered the Do or Die address the same evening, with the entire leadership arrested in the early hours of 9 August.

• Option (a) is therefore correct.
• Option (b) refers to the expansion of the Viceroy's Executive Council under the August Offer of 1940 and its later enlargement in 1941.
• Option (c) refers to the Congress ministries' resignation in October and November 1939 over the declaration of war without consultation.
• Option (d) refers to the Cripps Mission of March and April 1942, which preceded Quit India and whose failure was a direct cause of it. Hence (a). All four options are real events within a three year window, so the question is purely one of date discipline.

Songs from Prison was published in 1934 and comprises devotional lyrics that Gandhi translated from Sanskrit and Gujarati during his imprisonment at Yeravda, adapted into English with an introduction by John Sargent Hoyland, so option (c) is correct.

• Option (a) fails because Tilak's prison writing is the Gita Rahasya, composed at Mandalay, a philosophical commentary rather than a translation of lyrics.
• Option (b) fails because Nehru's prison works are Glimpses of World History, An Autobiography and The Discovery of India, none of them devotional translation.
• Option (d) fails because Sarojini Naidu wrote original English verse such as The Golden Threshold and The Bird of Time. Hence (c). The distinguishing test is the combination of prison authorship with religious translation, which points to Gandhi's Yeravda output.

John Elliot Drinkwater Bethune founded the Hindu Female School in Calcutta in 1849, and Ishwar Chandra Vidyasagar served as its secretary, using the position to advance female education alongside his campaigns for widow remarriage and against child marriage. After Bethune's death the institution was renamed in his memory, so option (c) is correct.

• Option (a) fails on chronology, since Annie Besant arrived in India in 1893 and her educational work centres on the Central Hindu College at Banaras.
• Option (b) fails because Debendranath Tagore's work lies with the Brahmo Samaj and the Tattvabodhini Sabha.
• Option (d) fails on chronology, Sarojini Naidu being born in 1879. Hence (c). Two of the four options can be eliminated on dates alone, which is the efficient route.

The three were officers of the Indian National Army tried jointly by court martial at the Red Fort in late 1945, in a trial that became a national cause because the accused were deliberately drawn one each from the Muslim, Hindu and Sikh communities, and the defence was conducted by Bhulabhai Desai, Tej Bahadur Sapru, Asaf Ali and Nehru. The resulting agitation is regarded as a significant factor in the British reassessment of the loyalty of Indian forces.

• Option (d) is therefore correct.
• Options (a), (b) and (c) attach the trio to movements and bodies with which none of them is associated. Hence (d). The communal composition of the accused is the detail that makes the episode memorable and is frequently the hook for questions on it.

• Statement 2 is correct and is the one the official key accepts: the Wodeyars of Mysore began as feudatories of Vijayanagara and asserted independence after the collapse of that empire following Talikota in 1565, so the Mysore Kingdom did emerge out of Vijayanagara.
• Statement 3 is incorrect: Rohilkhand was carved out by Afghan Rohilla settlers in the Katehar region under Ali Muhammad Khan in the 1720s and 1730s, well before Ahmad Shah Durrani's invasions began in 1748, so it was not formed out of territory he occupied.
• Statement 1 is treated as incorrect by the official key, on the view that the Nizamat of Arcot derived from Mughal authority over the Carnatic rather than emerging out of Hyderabad State as such. This is the contestable point, since the Nawab of Arcot was in practice appointed by and subordinate to the Nizam of Hyderabad, and the relationship of subordination is precisely what the later Carnatic Wars turned on.

Hence (b) per the key.

The Ajanta caves are cut into a horseshoe shaped basalt scarp formed by a meander of the Waghora, a small stream in the Sahyadri ranges of Aurangabad district, and the gorge setting is integral to the site's seclusion as a monastic retreat, so option (a) is correct.

• Option (b) is wrong because the Sanchi stupa stands on a hilltop near Vidisha in the Betwa basin, not in a Chambal gorge.
• Option (c) is wrong because the Pandu Lena or Trirashmi caves are near Nashik in the Godavari basin, not the Narmada.
• Option (d) is wrong because the Amaravati stupa stands on the bank of the Krishna in Guntur district, not the Godavari. Hence (a). Pairing each major site with its river is a compact revision exercise that also serves Geography questions on drainage basins.

• Statement 1 is incorrect and turns on a single institutional substitution: International Mother Language Day was proclaimed by UNESCO in 1999 and observed from 2000, not by UNICEF. UNESCO handles language, education and culture, while UNICEF's mandate is children's welfare, so the attribution is misplaced.
• Statement 2 is correct: Dhirendranath Datta raised the demand in the Constituent Assembly of Pakistan in February 1948 that Bengali be recognised alongside Urdu, and the movement that followed culminated in the police firing on students in Dhaka on 21 February 1952, which is precisely the event the observance commemorates. Hence (b). The two statements are connected, since the date in statement 1 exists because of the events in statement 2, and recognising that link makes the UNESCO attribution easier to recall.

• Statement 1 is correct: permaculture is built on polyculture, guild planting and functional diversity, whereas conventional chemical farming is organised around uniform stands that permit mechanised sowing, spraying and harvesting.
• Statement 2 is correct: salinisation arises from heavy irrigation combined with soluble fertiliser residues, and permaculture reduces both by relying on organic matter, water harvesting and reduced irrigation intensity, so the phenomenon is not characteristic of it.
• Statement 3 is incorrect and is the decisive statement: the relationship is the reverse of what is claimed, since permaculture with its emphasis on swales, mulching and water retention is particularly well suited to dryland and semi-arid conditions, while chemical farming there depends on irrigation that is often unavailable.
• Statement 4 is correct: mulching to conserve moisture, suppress weeds and build soil carbon is a defining permaculture practice and is optional in conventional systems. Hence 1, 2 and 4, giving (b). Recognising that statement 3 inverts the true position is enough, since only option (b) excludes it while retaining more than statement 4 alone.

• Statement 1 is incorrect and is the decisive statement: the oil palm, Elaeis guineensis, is native to West and Central Africa, and its dominance in Malaysia and Indonesia is the result of colonial era plantation transfer, not natural range.
• Statement 2 is correct: palm oil and its fractions supply fatty acids and emollients used in cosmetics, including lipsticks, soaps and perfumery bases, which is one reason demand is so difficult to substitute away from.
• Statement 3 is correct: palm oil is transesterified into biodiesel and is a major feedstock globally, which is precisely why biofuel mandates have been criticised for driving tropical deforestation. Hence 2 and 3, giving (b). The species name guineensis is the memory aid for the African origin.

All four are salt lakes of the Nagaur and Sikar belt of Rajasthan, part of the same inland drainage system as the much better known Sambhar Lake, where evaporation in an arid basin with no outlet concentrates dissolved salts and supports commercial salt extraction.

• Option (a) is wrong because Indian glaciers carry Himalayan names such as Siachen, Gangotri and Zemu.
• Option (b) is wrong because mangroves occur on the deltaic and tidal coasts, Sundarbans, Bhitarkanika, Pichavaram, not in interior Rajasthan.
• Option (c) is wrong because although Sambhar itself is a Ramsar site, these four are not designated as such. Hence (d). The unifying logic is aridity plus internal drainage, which is the standard setting for saline lake formation and is worth teaching as a process rather than as a list.

• Statement 1 is incorrect and is the decisive statement: licensing of exploration and exploitation in the Area, meaning the seabed beyond national jurisdiction, is the exclusive function of the International Seabed Authority established under the United Nations Convention on the Law of the Sea. The Global Ocean Commission was a time bound independent advocacy initiative that produced recommendations on ocean governance and had no licensing power at all.
• Statement 2 is correct: India holds ISA contracts for polymetallic nodules in the Central Indian Ocean Basin and for polymetallic sulphides in the Indian Ocean ridges, and is designated a pioneer investor.
• Statement 3 is correct: rare earth elements occur in deep sea muds and in ferromanganese crusts on the ocean floor. Hence 2 and 3, giving (b). The general rule worth teaching is that bodies named Commission or Panel in ocean governance advise, while the Authority created by treaty licenses.

Water efficiency here means output obtained per unit of water consumed, so the least efficient crop is the one demanding the most water for its yield. Sugarcane is a long duration crop occupying the field for ten to eighteen months with continuously high evapotranspiration, requiring roughly 1500 to 2500 millimetres of water, which makes option (a) correct.

• Option (c) pearl millet is the opposite case, a hardy C4 dryland cereal grown in the arid Rajasthan and Gujarat belt on minimal rainfall.
• Option (d) red gram is a rainfed pulse with deep roots and low irrigation demand.
• Option (b) sunflower is moderate in requirement and is often grown as a short duration oilseed. Hence (a). The policy relevance is worth flagging in class: sugarcane's water intensity in Maharashtra and the assured price mechanism together produce one of the sharpest distortions in Indian cropping patterns.

Both statements follow from the same mechanism, wind driven surface circulation.

• Statement 1 is correct: the trade winds blow from east to west across the tropics, piling warm surface water against the western margins of ocean basins and producing the western boundary currents such as the Gulf Stream and Kuroshio, while the eastern margins experience compensating upwelling of cold water, as off Peru and Namibia. This is why the western tropical Pacific warm pool exists and why El Nino, which relaxes the trades, is so consequential.
• Statement 2 is correct: in the temperate belt the westerlies drive warm water eastward, so the North Atlantic Drift warms the eastern Atlantic and north western Europe, leaving the western sections at comparable latitudes colder, which is why Labrador is far colder than Britain. Hence (c). Teaching the gyre as a single closed circulation makes both statements fall out of one diagram.

• Statement 1 is correct: the Climate-Smart Village model, piloted in Haryana and Bihar with bundles of stress tolerant varieties, laser levelling, zero tillage and weather advisories, is run under the CGIAR research programme on Climate Change, Agriculture and Food Security.
• Statement 2 is correct: CCAFS operates within the CGIAR system, and the CGIAR System Organization is headquartered at Montpellier in France.
• Statement 3 is correct: ICRISAT, based at Patancheru near Hyderabad and mandated for sorghum, pearl millet, chickpea, pigeonpea and groundnut in the semi-arid tropics, is one of the CGIAR research centres. All three hold, giving (d). The item is difficult chiefly because of the headquarters detail in statement 2, and a candidate confident about ICRISAT's CGIAR membership can at least narrow to (c) or (d).

Three clues in the passage converge on one biome. Rapid litter decomposition indicates continuously high temperature and humidity driving intense microbial and fungal activity, which strips nutrients into biomass and leaves the soil poor and bare. Competition for light through climbing lianas and epiphytes indicates a dense multi layered closed canopy. Both are diagnostic of the tropical rain forest, so option (d) is correct.

• Option (a) fails because coniferous forests accumulate thick, slowly decomposing acidic needle litter forming podzols.
• Option (b) fails because dry deciduous forests shed leaves seasonally and have open canopies with abundant ground light.
• Option (c) fails because mangroves are defined by tidal inundation, saline substrate and pneumatophores, none of which the passage mentions. Hence (d). The nutrient paradox, luxuriant vegetation on impoverished soil, is the concept being tested.

The savannah is a disturbance maintained biome, held below its climatic potential for forest by recurring suppression of tree seedlings.

• Item 2 is correct: periodic fire in the dry season kills woody saplings while grasses regenerate from protected basal meristems, which is the classic explanation for the persistence of savannah.
• Item 3 is correct: browsing and trampling by large herbivores, elephants especially, destroy young trees and maintain open ground.
• Item 4 is correct: a pronounced dry season creates the moisture deficit that trees cannot tolerate but deep rooted perennial grasses can, and it also supplies the dry fuel that makes fire possible.
• Item 1 is not accepted: burrowing animals and termites modify soil structure and nutrient distribution but do not control forest development at biome scale.
• Item 5 is likewise not accepted as a general controlling condition, since savannah occurs across widely differing soils. Hence 2, 3 and 4, giving (c). The unifying idea is that fire, grazing and seasonal drought are mutually reinforcing, which is why they are grouped in the key.

The question tests the ranking of freshwater reservoirs. Of all water on Earth roughly 97 per cent is saline ocean and about 3 per cent fresh. Within that freshwater fraction, glaciers and polar ice hold approximately 68 to 69 per cent, groundwater approximately 30 per cent, and surface water in rivers and lakes barely 0.3 per cent.

• Statement 1 is therefore incorrect by a very wide margin, rivers and lakes holding far less than groundwater.
• Statement 2 is correct, ice exceeding groundwater. Hence (b). The ordering to memorise is ice, then groundwater, then surface water, and it explains why groundwater depletion is so consequential: it is the largest reservoir of fresh water actually accessible for human use.

• Statement 1 is incorrect on two counts: moringa belongs to the family Moringaceae, not to the legumes, and it is deciduous rather than evergreen, shedding leaves in the dry season.
• Statement 2 is incorrect: tamarind, Tamarindus indica, is native to tropical Africa despite its species name and its long naturalisation in India, so it is not endemic to South Asia.
• Statement 3 is correct: tamarind is gathered from trees on forest and common land and is classified as minor forest produce, which brings it within the rights recognised under the Forest Rights Act and the Minimum Support Price scheme for MFP.
• Statement 4 is correct: India exports both tamarind and moringa seed.
• Statement 5 is correct: the seeds of both are oil bearing and the oil can be transesterified into biodiesel, moringa oil in particular being studied for this purpose. Hence 3, 4 and 5, giving (b).
• Statement 2 is the more instructive error, since a species epithet indica is a notoriously unreliable guide to origin.

Black cotton soil, or regur, is the weathering product of the Deccan basalts, erupted as flood basalts through fissures rather than central vents during the late Cretaceous, so option (b) is correct. The parent rock explains every property of the soil: it is rich in iron, magnesium, calcium and aluminium and poor in nitrogen and organic matter; it is clayey and montmorillonitic, so it swells when wet and develops deep cracks when dry, giving it self ploughing character and high moisture retention that suits cotton in a rainfed setting.

• Option (a) is wrong because brown forest soils are Himalayan.
• Option (c) is wrong because granite and schist weather to red and lateritic soils.
• Option (d) is wrong because shale and limestone give calcareous and alluvial derivatives. Hence (b). The geographical correspondence between the Deccan Trap outcrop and the regur belt of Maharashtra, Madhya Pradesh and Gujarat is the confirming check.

Both statements are correct.

• Statement 1 holds by definition: a recombinant vector vaccine is constructed by inserting the gene encoding an antigen of the target pathogen into the genome of a carrier organism, which is genetic engineering in the strict sense.
• Statement 2 holds because both bacterial and viral vectors are used. Attenuated adenoviruses are the best known viral vectors, used in the Oxford AstraZeneca chimpanzee adenovirus platform, in Sputnik V and in the Johnson and Johnson vaccine, while attenuated bacteria such as Salmonella and BCG have been employed as bacterial vectors, particularly for mucosal delivery. Hence (c). The conceptual point worth drawing out for students is that the vector delivers the genetic instruction and the host's own cells manufacture the antigen, which is what distinguishes this platform from subunit and inactivated vaccines.

• Statement 2 is correct and is the foundational fact: mitochondria are inherited exclusively through the oocyte cytoplasm, because the few paternal mitochondria that enter at fertilisation are selectively degraded, so mitochondrial disease follows a strictly maternal line of transmission.
• Statement 1 is correct and follows from it: mitochondrial replacement therapy transfers the nuclear genome from an affected woman's egg or zygote into a donor egg or zygote whose own nucleus has been removed but whose mitochondria are healthy. This can be done before fertilisation by maternal spindle transfer, or after fertilisation by pronuclear transfer, so the phrase either before or after in vitro fertilization is accurate and is the precise point being tested. Hence (c). The technique is the origin of the loose journalistic phrase three parent baby, and the resulting child carries nuclear DNA from two parents and mitochondrial DNA from a third.

Bollgard is the Monsanto trade name for Bt cotton. Bollgard I carries a single gene, cry1Ac, from Bacillus thuringiensis, expressing a crystal protein toxic to lepidopteran bollworms. Bollgard II stacks two genes, cry1Ac and cry2Ab, which broadens the pest spectrum and, importantly, delays the evolution of resistance, since an insect must acquire resistance to both toxins simultaneously. Both are therefore transgenic crop technologies, making option (b) correct.

• Option (a) is wrong because clonal propagation is tissue culture, involving no gene transfer.
• Option (c) is wrong because plant growth substances are auxins, gibberellins and cytokinins.
• Option (d) is wrong because biofertilisers are microbial inoculants such as Rhizobium and Azotobacter. Hence (b). Bt cotton remains the only GM crop approved for commercial cultivation in India, which is a fact worth stating precisely whenever this topic arises.

The cooking temperature is the boiling point of water at the pressure maintained inside the vessel, and that pressure is set by the condition for the weight to lift. The steam must exert a force exceeding the weight of the regulator, so the gauge pressure at which venting begins is the weight divided by the area of the vent hole.

• Item 3 is therefore correct, since a heavier weight demands higher pressure.
• Item 1 is correct, since for a given weight a smaller hole area means a higher pressure is needed to produce the required lifting force, and the two together fix the operating pressure.
• Item 2 is incorrect and is the key exclusion: a hotter flame raises the rate of steam generation and so shortens the time to reach operating pressure, but it cannot raise the pressure beyond the point at which the weight lifts and vents the excess. The flame governs how fast, not how hot. Hence 1 and 3, giving (c). This is a clean application of the Clausius Clapeyron relation between pressure and boiling point, and is a good classroom example of a regulated equilibrium.

• Statement 1 is incorrect on both limbs, which is unusual and makes it easier once the biology is secure. Adenoviruses have double stranded DNA genomes, not single stranded. Retroviruses have single stranded RNA genomes, not double stranded DNA, and their defining feature is reverse transcriptase, which copies that RNA into DNA for integration into the host chromosome, the very reversal of the central dogma from which the group takes its name.
• Statement 2 is correct: adenoviruses are among the agents of the common cold, alongside rhinoviruses and coronaviruses, and AIDS is caused by HIV, a retrovirus of the lentivirus genus. Hence (b). A candidate who remembers only that retroviruses are RNA viruses can reject statement 1 outright and reach the answer.

The water molecule is bent with an angle of about 104.5 degrees, and because oxygen is far more electronegative than hydrogen the molecule carries a permanent dipole moment. That dipole allows water to surround ions, orienting its negative oxygen end towards cations and its positive hydrogen ends towards anions, which is hydration, and the energy released in doing so overcomes the lattice energy holding the solid together. This is why water is called the universal solvent, so option (a) is correct.

• Option (b) is irrelevant, since thermal conductivity has no bearing on solvation.
• Option (c) is a genuine property of water but explains its thermal buffering of climate and organisms, not its dissolving power.
• Option (d) merely restates the composition without supplying a mechanism, and many oxides are not solvents at all. Hence (a). The question rewards distinguishing a true statement from an explanatory one.

• Statement 1 is correct: a sodium lamp is a gas discharge tube radiating in all directions, so reflectors are needed to direct the output downward and much is wasted as glare and sky glow, whereas an LED is a semiconductor junction emitting into a hemisphere, which is why LED luminaires deliver more usable light per watt onto the road surface.
• Statement 3 is correct: the sodium D lines at about 589 nanometres make low pressure sodium light almost monochromatic yellow, under which colours cannot be distinguished, while LEDs provide broad spectrum white light with far better colour rendering, an appreciable safety advantage.
• Statement 2 is incorrect and is the decisive statement: LEDs substantially outlast sodium lamps, typically fifty thousand hours against fifteen to twenty four thousand, and this longevity together with efficiency is the entire economic case for the replacement programme. Hence 1 and 3, giving (c). Note that if statement 2 were true the national LED retrofit would make little sense, which is a useful plausibility check.

ACE2 is angiotensin converting enzyme 2, a membrane bound enzyme of the renin angiotensin system present on cells of the respiratory epithelium, intestine, heart and kidney. It became globally significant because the spike protein of SARS-CoV-2 binds ACE2 to gain entry into host cells, which explains both the tissue distribution of COVID-19 damage and the design of vaccines and therapeutics targeting that interaction.

• Option (d) is therefore correct.
• Option (a) is wrong because transgenic plant genes are designated cry, bar and similar.
• Option (b) is wrong because India's navigation system is NavIC, built on the IRNSS constellation.
• Option (c) is wrong because radio collars involve VHF and satellite telemetry, not enzyme nomenclature.

Hence (d).

Polycarbonate is produced by the condensation of bisphenol A with phosgene or by transesterification with diphenyl carbonate, so BPA is a structural monomer of the polymer chain itself, making option (b) correct. The health concern arises because residual and hydrolysed BPA leaches from polycarbonate containers, particularly on heating, and acts as an endocrine disruptor by mimicking oestrogen, which is why BPA free labelling appeared on water bottles and infant feeding bottles.

• Option (a) is wrong because low density polyethylene is polymerised from ethylene alone.
• Option (c) is wrong because PET is made from terephthalic acid and ethylene glycol.
• Option (d) is wrong because PVC is polymerised from vinyl chloride, and its own health concerns relate to vinyl chloride monomer and to phthalate plasticisers, a different class of additive. Hence (b). The distinction between a monomer built into the backbone and an additive blended in is the concept worth drawing out.

Triclosan is a chlorinated aromatic antibacterial and antifungal agent incorporated into soaps, hand washes, toothpastes, deodorants and cosmetics, so option (d) is correct. The concerns are twofold and worth separating for students: it contributes to antimicrobial resistance by exerting selective pressure through routine domestic use, and it acts as a suspected endocrine disruptor, which together led the US Food and Drug Administration to bar it from over the counter antiseptic washes.

• Option (a) is wrong because food preservatives are benzoates, sorbates, nitrites and sulphites.
• Option (b) is wrong because ripening is induced by ethylene and, illegally in India, by calcium carbide.
• Option (c) is wrong because the concern with reused plastic containers is BPA, phthalates and antimony from PET, not triclosan. Hence (d). The antibacterial function is the clue that points to personal care products rather than to food chemistry.

A unit of measurement is useful only if it is invariant, and the light-year is defined as the distance light travels in vacuum in one Julian year. That definition is reliable precisely because the speed of light in vacuum is a universal constant, identical for every observer regardless of relative motion, which is the second postulate of special relativity and now fixes the metre itself by definition.

• Option (d) is therefore correct.
• Option (a) is false as a matter of fact, since stellar distances change continuously through proper motion and cosmological expansion, and it would in any case not justify the choice of unit.
• Option (b) is irrelevant to distance measurement and also untrue in general.
• Option (c) is both physically inaccurate, since light bends in a gravitational field as gravitational lensing demonstrates, and insufficient, because straightness of path says nothing about the constancy of the scale. Hence (d). The question is really asking what property makes a good standard, which is a point worth generalising to the SI base units.

• Statement 1 is correct and states the central structural difference. The United Kingdom has no codified constitution and no judicial review of primary legislation, so Parliament is legally sovereign and can enact or repeal any law. Indian Parliament is limited in three distinct ways: by the distribution of legislative powers in the Seventh Schedule, by the Fundamental Rights in Part III, and by the basic structure doctrine laid down in Kesavananda Bharati.
• Statement 2 is correct: Article 145(3) requires that any case involving a substantial question of law as to the interpretation of the Constitution be decided by a bench of at least five judges, which is what a Constitution Bench is, and challenges to the constitutionality of amendments fall squarely within it. Hence (c). The two statements are connected, since it is the existence of substantive limits under statement 1 that necessitates the adjudicating machinery of statement 2.

• Statement 2 is correct: the Department of Personnel was created in August 1970 on the recommendation of the first Administrative Reforms Commission set up in 1966 under Morarji Desai and later K. Hanumanthaiya, and it was placed under the Prime Minister, which is why the Department of Personnel and Training remains under the Prime Minister's charge to this day.
• Statement 1 is treated as incorrect. N. Gopalaswamy Iyengar's 1950 report on the Reorganisation of the Machinery of Government dealt with the structure and working of ministries and the Cabinet Secretariat, but the specific proposal of a dedicated minister and secretary exclusively for administrative reform is not attributed to it. Hence (b).
• Statement 2 is the more secure of the two, since the continuing placement of DoPT under the Prime Minister is a familiar fact, and a candidate confident of it can eliminate (a) and (d) at once.

In Justice K. S. Puttaswamy versus Union of India in 2017, a nine judge bench held unanimously that the right to privacy is a fundamental right intrinsic to the right to life and personal liberty under Article 21, and also traceable to other freedoms in Part III, overruling the contrary holdings in M. P. Sharma and Kharak Singh.

• Option (c) is therefore correct.
• Option (a) concerns prohibition of discrimination on grounds of religion, race, caste, sex or place of birth.
• Option (b) concerns the six freedoms, and while informational privacy has a relationship with free expression, the seat of the right is Article 21.
• Option (d) concerns protection of the interests of minorities in language, script and culture. Hence (c). Article 21 is the most expansively interpreted provision of the Constitution, and privacy sits alongside the rights to livelihood, health, clean environment and speedy trial as judicially derived from it.

This item was dropped by the Commission, so no answer was credited and the paper was scored out of ninety nine items. On the merits, statement 1 is incorrect: Section 33(7) of the Representation of the People Act, 1951, as amended in 1996, restricts a candidate to contesting from a maximum of two constituencies, so a bar on three does exist.

• Statement 2 is correct: Devi Lal contested from three constituencies in 1991, which was lawful at the time because the two constituency limit was introduced only in 1996, and his case is among the episodes that prompted the amendment.
• Statement 3 is incorrect: no rule requires a party to bear the cost of consequent bye-elections, though the Law Commission in its 255th report and the Election Commission have both recommended either a one constituency rule or a deposit to defray that cost. On this reading the answer would have been (b), and the most likely ground for dropping the item is the tension created by statement 1, whose phrasing invites a reading about three specifically rather than about the statutory ceiling of two.

• Statement 1 is incorrect and is the decisive statement: the Right to the City, originating with Henri Lefebvre in 1968 and developed through the World Charter for the Right to the City and the New Urban Agenda adopted at Habitat III in 2016, is a normative and advocacy concept rather than a codified human right, and UN-Habitat does not operate a country by country monitoring mechanism of binding commitments.
• Statement 2 is correct: the concept's core content is collective reappropriation of urban space and democratic participation in decisions that shape the city, as against a purely market determined urban order.
• Statement 3 is correct as an expression of the same principle, that residents of informal and unauthorised settlements retain a claim to basic services and cannot be excluded from urban citizenship by reason of tenure status. Hence 2 and 3, giving (d). The reliable route is to distrust any claim that a contested normative concept has become an agreed human right with an international monitoring body attached.

• Statement 1 is incorrect and inverts the position: in judicial custody the accused is committed to jail under the authority of the magistrate, whereas confinement in a police station lock up is police custody. The statement correctly identifies whose custody it is and then attaches the wrong place of detention.
• Statement 2 is correct: once an accused is in judicial custody the investigating officer loses the free access he enjoys during police custody, and interrogation requires the permission of the court, which is the substantive protection the distinction exists to provide. Hence (b). The rationale is worth teaching alongside Article 22 and Section 167 of the Criminal Procedure Code: police custody is capped at fifteen days precisely because proximity to the investigating agency creates the risk of coercion, and judicial custody removes the accused from that proximity.

• Statement 1 is incorrect: parole is a discretionary concession, not an enforceable right, and even where a prisoner makes out a strong case the competent authority may refuse it on grounds such as the security of the state, the likelihood of the prisoner absconding or interfering with witnesses, or the gravity of the offence. The courts have consistently held that no prisoner can claim parole as a matter of right.
• Statement 2 is correct: prisons are a State subject under Entry 4 of the State List, so each State frames its own Prisoners Release on Parole Rules, which is why eligibility conditions, duration and the sanctioning authority differ across States. Hence (b). The federal point in statement 2 is the more useful one for the examination, since it recurs whenever prison administration, police reform or public order arises.

The Ministry of Tribal Affairs is the nodal ministry for the Forest Rights Act, so option (d) is correct. The allocation is deliberate and worth explaining rather than merely memorising: the Act was framed to undo what its preamble calls the historical injustice done to forest dwelling communities, so responsibility was placed with the ministry representing those communities rather than with the forest bureaucracy whose exercise of control the Act was meant to correct.

• Option (a) is the natural but wrong guess for exactly that reason, and the tension between the two ministries over implementation, particularly on the recognition of community forest resource rights, is a recurring theme.
• Option (b) is wrong although Gram Sabhas are the authority that initiates claims.
• Option (c) is wrong, its remit being rural livelihoods and employment.

Hence (d).

Article 14 guarantees equality before the law and equal protection of the laws, and the doctrine developed from E. P. Royappa and Maneka Gandhi treats arbitrariness as the antithesis of equality. A statute conferring unguided discretion enables like cases to be treated unalike at official whim, which is arbitrariness in its clearest form and therefore offends Article 14.

• Option (a) is correct.
• Option (b) concerns freedom from religious instruction in State funded educational institutions and is irrelevant.
• Option (c) is the right to constitutional remedies, which is the means of challenging such a law rather than the provision it violates, and this is the trap in the question.
• Option (d) is the directive on a uniform civil code, unenforceable by courts under Article 37. Hence (a). The distinction between the right infringed and the remedy invoked is the point being tested.

The official key gives (a). The reasoning is that in a federation the division of powers between two levels of government requires an impartial umpire to adjudicate disputes about that division, and an independent judiciary with the power of judicial review is therefore an essential and defining federal feature rather than merely a desirable one.

• Option (c) is plainly wrong, being a matter of political practice rather than constitutional structure.
• Option (d) is wrong because enforceable fundamental rights are a feature of liberal constitutionalism found equally in unitary systems.
• Option (b) is the genuinely competing answer and was the choice of many commentators, since a second chamber representing the constituent units is the classic federal device and the Rajya Sabha performs that function, so this item should be treated as contested rather than settled.

Hence (a) per the key, with the reservation recorded.

The classical definition of the State requires four elements: population, territory, government and sovereignty.

• Option (a) alone contains all four, naming a community of persons for population, a definite territory, an organised government, and independence of external control, which is sovereignty.
• Option (b) omits sovereignty and instead adds purposive functions such as protecting natural rights and safeguarding means of sustenance, which describe what a State ought to do rather than what makes it a State.
• Option (c) omits sovereignty and substitutes culture and tradition, which are attributes of a nation, and the nation versus State distinction is exactly what this option tests.
• Option (d) omits sovereignty and describes an institutional arrangement of organs of government. Hence (a). The absent element in the three wrong options is the same in each case, which makes sovereignty the single discriminator.

• Statement 1 is correct: Article 128 empowers the Chief Justice of India, with the previous consent of the President and of the person concerned, to request any person who has held office as a judge of the Supreme Court or of the Federal Court to sit and act as a judge of the Supreme Court, and such a person enjoys all the jurisdiction and privileges of a judge without being deemed one for other purposes.
• Statement 2 is treated as incorrect on a precise textual ground: Article 137 expressly confers on the Supreme Court the power to review its own judgements, and there is no corresponding express provision for High Courts, whose review power rests on the Code of Civil Procedure and inherent jurisdiction rather than on a constitutional grant. The phrase as the Supreme Court does is therefore what makes the statement fail. Hence (a). This is a fine distinction and the item is legitimately difficult, since High Courts do in practice exercise review.

• Statement 1 is correct: unlike the United States, India provides single citizenship for the whole country with no separate State citizenship, and a single domicile, so no State can discriminate against citizens of another State in matters of employment or education except as expressly permitted.
• Statement 2 is incorrect: Article 58 requires only that a candidate for President be a citizen of India, qualified for election to the Lok Sabha and at least thirty five years of age, with no requirement of citizenship by birth, which distinguishes the Indian position from the natural born citizen clause of the United States Constitution.
• Statement 3 is incorrect: the Citizenship Act, 1955 provides for termination and for deprivation of citizenship, including on grounds of fraud in obtaining it, disloyalty, or unlawful trading with an enemy in wartime. Hence (a).
• Statement 3 uses the absolute phrase under any circumstances, which is a reliable signal of overstatement.

The proposition being tested descends from Montesquieu, that liberty is endangered whenever legislative, executive and judicial power are united in the same hands, and is preserved by distributing them so that each checks the others.

• Option (d) is therefore correct.
• Option (a) is the deliberate trap, since a committed judiciary means one committed to a political ideology or to the government of the day, which is the negation of judicial independence and a threat to liberty rather than a safeguard, a phrase with a specific and unhappy history in Indian constitutional debate.
• Option (b) is the opposite of the safeguard, concentration being precisely the danger.
• Option (c) is insufficient, because an elected majority can itself extinguish liberty, which is the problem of the tyranny of the majority that constitutional limits exist to address. Hence (d). The distinction between committed and independent is worth dwelling on with students.

Article 39(c), a Directive Principle, requires the State to direct its policy towards ensuring that the operation of the economic system does not result in the concentration of wealth and means of production to the common detriment, so option (b) is correct and the answer is found in the express text.

• Option (a) is wrong because the Right to Equality under Articles 14 to 18 addresses equality before the law and prohibits discrimination, untouchability and titles, and does not speak to economic concentration.
• Option (c) is wrong because the Right to Freedom under Article 19 concerns speech, assembly, association, movement, residence and profession.
• Option (d) is wrong because a concept of welfare is not a constitutional provision that can be violated. Hence (b). Article 39(b) and (c) together carry particular significance as the provisions protected by Article 31C, and they are among the most frequently examined Directive Principles.

The Forty fourth Amendment of 1978 removed the right to property from Part III by deleting Article 19(1)(f) and Article 31, and relocated it as Article 300A, which provides that no person shall be deprived of his property save by authority of law. Two consequences follow, and the question tests both. First, it is now a constitutional legal right rather than a fundamental right, so it cannot be enforced by direct petition to the Supreme Court under Article 32. Second, Article 300A uses the word person rather than citizen, so the protection extends to non citizens and to companies as well.

• Option (b) captures both, and is correct.
• Option (a) fails on the second point, option (c) on the first, and option (d) on both. Hence (b). The person versus citizen distinction runs throughout Part III and is worth teaching as a single consolidated list.

Constitutional government means limited government, one whose authority is bounded by the terms of a constitution that both confers and restrains power, so option (d) is correct. The crucial point, worth stressing to students, is that having a constitution is not the same as having constitutional government: a state may possess a written constitution and still govern arbitrarily, so the concept is substantive rather than formal.

• Option (a) is wrong because federalism is one possible structure and not a defining condition, many constitutional governments being unitary.
• Options (b) and (c) are wrong because they describe the distinction between parliamentary and presidential executives, which concerns the form of government rather than whether it is constitutionally limited.

Hence (d).

Read the stem carefully, since it asks which statements are not correct.

• Statement 1 is not correct: Article 18(1) abolishes titles, and the Supreme Court in Balaji Raghavan versus Union of India in 1995 upheld the civilian awards precisely on the footing that they are decorations recognising exceptional service and not titles within the meaning of Article 18, so recipients may not use them as prefixes or suffixes to their names.
• Statement 2 is not correct: the Padma awards were suspended twice, briefly in 1978 and again between 1993 and 1997, not once.
• Statement 3 is not correct: the convention limits Bharat Ratna to a maximum of three in a year, not five. Since all three are incorrect, the answer is (d). Note the interaction between the stem and the options: recognising any two errors already forces (d), because no option pairs those two alone without a third.

• Statement 1 is not correct, and the error is a single substituted institution: the Tree Cities of the World programme is run jointly by the Food and Agriculture Organization and the Arbor Day Foundation, not by the United Nations Capital Development Fund, whose mandate is development finance in least developed countries.
• Statement 2 is correct: recognition is conferred annually and requires a city to meet five standards, namely establishing responsibility, setting rules, maintaining an inventory of tree resources, allocating resources, and celebrating achievements, so it does follow from a demonstrated commitment to grow and maintain urban forests. Since the first is wrong and the second right, the answer is (d). The item illustrates a design UPSC has used increasingly since 2021, the Statement 1 and Statement 2 format, in which the two statements must be assessed independently before any question of explanation arises.

• Statement 1 is correct: Tiger Woods won the inaugural Laureus World Sportsman of the Year award in 2000, following his extraordinary 1999 and 2000 seasons.
• Statement 3 is correct: Roger Federer has won the Sportsman of the Year award more times than any other individual, taking it five times between 2005 and 2018.
• Statement 2 is incorrect and is the decisive statement: the award has gone across a wide range of disciplines, tennis, athletics, football, golf and cycling among them, and Formula One drivers form only a small minority of recipients, so the claim that it has mostly gone to them fails. Hence 1 and 3, giving (c). A candidate who knows only that Federer is the most decorated recipient can eliminate (a), and knowing that the award is not dominated by any single sport removes (b) and (d).

• Statement 1 is incorrect: the official motto of the Tokyo Games was United by Emotion, chosen to express the power of sport to bring people together after the pandemic postponement. The phrase A New World was the motto of the Rio 2016 Games in its Portuguese form.
• Statement 2 is correct: the 32nd Summer Olympics introduced sport climbing, surfing and skateboarding as new disciplines and brought back karate, baseball and softball, several of them selected under the host country provision permitting additional sports. Hence (b). The Games were formally the Games of the XXXII Olympiad, retaining the Tokyo 2020 branding despite being held in 2021, a detail that has itself been examinable.

Both statements are incorrect, which turns on a single point about the competition format. Qualification for the final was determined not by the raw number of matches won but by the percentage of available points earned, a method adopted precisely because the pandemic caused teams to play unequal numbers of series, making absolute point totals unfair.

• Statement 1 therefore fails.
• Statement 2 fails for the same reason and also on the facts, since New Zealand finished above England on points percentage rather than on matches won. India and New Zealand contested the final at Southampton in June 2021, New Zealand winning by eight wickets. Hence (d). The transferable lesson is that when a competition is disrupted, normalised or percentage based ranking is the usual remedy, and questions of this type reward knowing the mechanism rather than the scoreline.