GS Paper 1 practice questions for UPSC Mains 2026.

• Mass mobilisation: Leaders such as Mahatma Gandhi, Ho Chi Minh, Sukarno and Kwame Nkrumah mobilised popular resistance against colonial rule
• Demand for self-determination: The ideals of the Atlantic Charter (1941) and the UN Charter (1945) strengthened anti-colonial aspirations
• Weakening of colonial powers: Britain, France and the Netherlands emerged economically exhausted after WWII, making imperial rule increasingly
• International legitimacy: The United Nations recognised the principle of self-determination and provided moral support to anti-colonial struggles
• Proxy conflicts: Decolonisation became intertwined with Cold War rivalries in Vietnam, Congo and Angola
• Economic and military assistance: Both blocs extended aid to newly independent states to secure geopolitical influence
• Rise of Non-Alignment: Countries such as India, Egypt and Yugoslavia sought to preserve strategic autonomy through the Non-Aligned Movement (1961)

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• Localised and region-specific: Confined to particular areas such as the Santhal Rebellion (1855-56), Munda Ulgulan (1899-1900) and Deccan Riots (1875)
• Economic in character: Triggered by excessive land revenue, indebtedness, forced cultivation (Indigo Revolt), forest restrictions and exploitation by
• Restorative rather than revolutionary: Sought restoration of traditional rights and customary institutions rather than complete political independence
• Community-based mobilisation: Organised around tribal identity, village solidarity or caste networks under charismatic leaders such as Birsa Munda,
• Spontaneous and decentralised: Lacked permanent organisations, coordinated leadership or a common national programme
• Violent methods: Attacks on revenue offices, moneylenders and symbols of colonial authority were common
• Exposed colonial exploitation: Highlighted the oppressive nature of revenue policies, forest laws and commercial agriculture

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• Nationalism as the ideological basis: Both movements invoked a shared language, history and culture to overcome dynastic and territorial fragmentation
• Leadership by a dominant kingdom: Piedmont-Sardinia under Victor Emmanuel II led Italian unification, while Prussia under William I led Germany
• Statecraft and diplomacy: Cavour and Bismarck used diplomatic alliances and exploited rivalries among European powers
• Role of warfare: Unification was achieved through carefully chosen wars rather than popular nationalism alone
• Foreign assistance or neutrality: Italy benefited from French assistance against Austria in 1859; Prussia secured Russian neutrality and temporarily
• Italian unification was a combination of revolutionary nationalism, popular mobilisation and diplomatic statecraft
• Leadership was shared among Mazzini, who inspired nationalist ideals; Garibaldi, who mobilised volunteers through the Expedition of the Thousand (1860);

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• Mercantilist regulation: Britain viewed the Thirteen Colonies primarily as sources of raw materials and markets for British goods under the Navigation Acts
• Taxation without representation: The
• Restrictions on trade and industry: British policies curtailed colonial manufacturing and regulated overseas trade for imperial benefit
• Tea Act and Boston Tea Party (1773): Although the Tea Act reduced the price of legally imported tea, it retained the parliamentary duty and strengthened
• Acts (1774): Britain's punitive response intensified colonial unity and hastened the outbreak of revolution
• Popular sovereignty: Governments derive legitimacy from the consent of the governed, not divine right
• Natural rights: The Declaration of Independence (1776), drafted by Thomas Jefferson, affirmed the rights to life, liberty and the pursuit of happiness,

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• End of European dominance: Britain and France emerged economically weakened, while the US and USSR became the two global superpowers
• Beginning of the Cold War: Ideological rivalry between capitalism and communism led to military blocs such as NATO and the Warsaw Pact
• Acceleration of decolonisation: European colonial powers lost legitimacy, leading to the independence of countries across Asia and Africa, including India
• Rise of the United States: The US assumed leadership through the Marshall Plan, the Bretton Woods institutions (IMF and World Bank), and a rules-based
• Emergence of nuclear politics: The atomic bombings of Hiroshima and Nagasaki (1945) introduced the nuclear age, shaping global security and deterrence
• Expansion of international economic cooperation: Institutions such as the IMF, World Bank, and later the GATT (1947) promoted post-war reconstruction and
• Recognition of human rights: The horrors of the Holocaust strengthened international commitment to protecting human dignity and preventing genocide

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• Utopian Socialism: Thinkers such as Robert Owen, Saint-Simon and Charles Fourier advocated cooperative communities, social ownership and peaceful reform
• Scientific Socialism: Karl Marx and Friedrich Engels, especially through the Communist Manifesto (1848), interpreted history through class conflict and
• Revisionism and Social Democracy: Eduard Bernstein rejected the inevitability of violent revolution and supported parliamentary democracy, trade-union
• Democratic Socialism: It sought greater social ownership, equality and redistribution through democratic and constitutional means rather than one-party
• Revolutionary Socialism: Russian Revolution of 1917 produced the first durable state claiming a socialist basis
• Post-war Social Democracy and Market Socialism: Western European social democracies combined market economies with welfare provision, progressive taxation
• Socialist, labour and trade-union movements contributed significantly to the eight-hour workday, minimum wages, collective bargaining and workplace

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• The 1835 Minute settled the Anglicist-Orientalist controversy in favour of English as the medium of higher education.
• Bentinck's English Education Act 1835 gave it legal force, making English the language of courts and higher administration.
• It supplied a cheap English-literate clerical class for the expanding Company bureaucracy.
• Downward filtration theory starved mass and vernacular education; literacy remained below 6 per cent for decades.
• Withdrawal of patronage weakened indigenous tols, madrasas and pathshalas.
• Wood's Despatch 1854 and the 1857 universities institutionalised the framework; the Hunter Commission 1882 addressed its neglect of primary education.
• Unintended outcome: an English-educated intelligentsia that used liberal ideas to build reform movements and nationalism.

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• Gandhi converted elite petition politics into mass politics after 1919.
• Non-Cooperation drew in students, lawyers, Awadh peasants, Akali reformers and Assam plantation labour.
• Civil Disobedience saw unprecedented women's participation and no-tax and no-rent campaigns across regions.
• Quit India was sustained by students, workers and peasants after the leadership's arrest, producing parallel governments.
• Techniques requiring neither literacy nor wealth - spinning, boycott, picketing, courting arrest - lowered the entry barrier.
• Congress reorganisation on linguistic lines with four-anna membership institutionalised the mass base.
• Limits: Chauri Chaura's violence, Ambedkar's critique on Dalit representation, and restraint imposed by propertied supporters.

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• Ashokan edicts are the earliest self-authored, securely datable state records in Indian history, deciphered by Prinsep in 1837.
• Rock Edict XIII's list of five Hellenistic kings supplies the absolute chronological anchor for c. 268-232 BCE.
• Edict distribution from Kandahar to Yerragudi maps imperial extent more reliably than literary sources.
• References to rajukas, mahamatras and dhamma-mahamatras reveal a graded provincial administration.
• Kalinga remorse and the dhamma policy record a documented shift from conquest to moral persuasion.
• Multilingual issue in Prakrit, Greek and Aramaic shows frontier administration adapted to local populations.
• Limits: royal propaganda, silent on economy and revenue, requiring corroboration with Megasthenes, Arthashastra and archaeology.

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• Binary interaction of two cyclonic vortices orbiting a common centroid, described by Sakuhei Fujiwhara in 1921.
• Typically begins when comparable systems come within about 1,200-1,400 km of each other.
• Four outcomes: mutual rotation, merger, absorption of the weaker storm, or straining out.
• Tracks become erratic - looping, stalling or reversing - degrading landfall forecasts.
• Stalling prolongs rainfall and surge over one coastal stretch, raising flood risk independent of wind speed.
• Intensity usually falls because the storms compete for moisture and mutual shear disrupts the warm core.
• Post-merger intensification can occur when a single system inherits combined moisture and angular momentum.

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• Tundra fragility stems from a growing season under three months, permafrost, simple food webs and decadal recovery times.
• Northern permafrost holds an estimated 1,400-1,600 Gt of carbon, roughly twice the atmospheric stock.
• Arctic amplification is warming the region close to four times the global average.
• Economic value: about 13% of undiscovered oil and 30% of undiscovered gas per USGS, plus nickel, rare earths and diamonds.
• Barents and Bering Sea fisheries and the opening Northern Sea Route add commercial weight.
• Extraction accelerates thaw, which destroys the very infrastructure built to extract - as the 2020 Norilsk spill showed.
• Governance is weak: the Arctic Council coordinates without regulating, and UNCLOS shelf claims are contested.

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• Aeolian processes act where vegetation is sparse, soils dry and loose, and winds strong - the UNCCD's desertification setting.
• ISRO's Desertification Atlas puts about 29-30% of India's area under degradation, with wind erosion dominant on nearly 6%.
• Deflation strips fine silt, clay and organic matter, leaving desert pavement and nutrient-poor coarse residue.
• Saltation moves most sand; suspension carries dust hundreds of kilometres as storms.
• Migrating barchan and transverse dunes bury cropland, canals and settlements at desert margins.
• Aeolian deposition is not only destructive - loess and sandy loams are fertile aeolian soils.
• Wind accelerates rather than initiates degradation; overgrazing and unsuitable cultivation break the crust first.

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• The Indus, Ganga and Brahmaputra rise in a shared Himalayan-Tibetan reservoir and cross five national borders.
• As an asset: irrigation-based food security, Nepali and Bhutanese hydropower exports, inland waterway trade and delta ecology.
• As a conflict source: Indus Waters Treaty strains over Kishanganga and Ratle, unsigned Teesta agreement, Farakka and the 1996 Ganga Treaty.
• China's upstream position on the Yarlung Tsangpo is governed only by data-sharing MoUs, not a basin treaty.
• Internal disputes - Cauvery, Krishna, Ravi-Beas, Mahadayi - persist despite the Inter-State River Water Disputes Act 1956.
• Per capita availability in India has fallen below the 1,700 cubic metre water-stress threshold.
• No South Asian war has been fought over water; institutional design, not scarcity alone, decides the outcome.

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• Diversity is India's structural condition; unity is a political achievement built on constitutional and institutional design.
• Single citizenship, integrated judiciary and Articles 25-30 supply the constitutional foundation.
• Composite Bhakti-Sufi traditions, shared pilgrimage geography and Indo-Islamic culture supply the cultural one.
• Communalism politicises religious identity; regionalism expresses itself as statehood demands, language agitation and sons-of-the-soil politics.
• Accommodation rather than assimilation - linguistic reorganisation and the Eighth Schedule - defused rather than suppressed conflict.
• Asymmetric federalism under Articles 371A-371J and the Sixth Schedule grants autonomy without secession.
• Unity is maintained, not guaranteed: it depends on institutions accommodating grievance faster than it is mobilised.

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• Four models: charity, medical, social and rights-based; the UNCRPD 2006 and the RPwD Act 2016 embody the last.
• The RPwD Act 2016 expanded recognised disabilities from 7 to 21 and mandated reasonable accommodation.
• Census 2011 recorded 2.68 crore persons with disabilities (2.21%) against a WHO global estimate near 16%, indicating undercounting.
• Vikash Kumar v. UPSC (2021) made reasonable accommodation a facet of the equality right; Rajive Raturi (2024) directed enforceable accessibility standards.
• ILO estimates disability exclusion costs developing economies 3-7% of GDP.
• The 4% public employment and 5% higher-education reservations remain under-filled and unevenly enforced.
• Ageing and injury burden will expand the disabled population, making universal design cheaper than retrofitting.

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• Digital technology amplifies existing capability rather than automatically equalising it.
• UPI and the JAM trinity extended payment infrastructure to vendors and migrant workers without branch banking.
• DBT shifted entitlements from discretionary intermediaries to direct beneficiary accounts.
• e-NAM, ONDC and SHG e-commerce widened market access beyond local intermediaries.
• NFHS-5 recorded 57% of men against 33% of women having ever used the internet - a stratified divide.
• Biometric authentication failures have produced ration exclusion errors among the poorest.
• Outcome depends on last-mile access, vernacular capability building and accountable grievance redress with offline fallback.

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• Vijayanagara (Provida) style, 1336-1565, synthesised inherited Dravidian grammar with contemporary Deccan practice.
• Inherited: pyramidal vimana, concentric prakaras, axial mandapas, temple tank and the temple's economic role.
• Innovated: dominant gopuram over vimana, kalyana mandapa, separate amman shrine, hundred-pillared halls.
• Composite yali piers, musical pillars and the Vitthala stone chariot represent the technical peak.
• Shift to hard granite favoured bold mass, compensated by painted ceilings as at Lepakshi.
• Secular buildings - Lotus Mahal, Elephant Stables, Queen's Bath - use Indo-Islamic arches, domes and stucco.
• Hampi's aqueducts and stepped tanks show city-scale hydraulic planning; the style passed to the Nayakas after Talikota 1565.

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• Balanced regional development was a stated plan objective but secondary to capital formation, heavy industry and self-reliance.
• Colonial development was port-led, leaving an industrial coastal core and a raw-material interior periphery.
• PSU siting at Bhilai, Rourkela, Durgapur and Bokaro deliberately took heavy industry to the mineral belt.
• Pande and Wanchoo Working Groups 1968-69 created the backward-area incentive framework.
• Gadgil formula 1969 and Special Category Status weighted transfers towards poorer and hill states.
• Enclave PSUs generated weak local linkages and licensing often protected incumbents in advanced regions.
• Post-1991 divergence widened as private investment followed infrastructure and governance quality.

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• All three are hot, dry local winds but the Loo is advective while Chinook and Foehn are orographic descent winds.
• Loo blows across the Indo-Gangetic plain in May-June from the Thar and Iranian deserts at 45-50 degrees Celsius.
• Chinook descends the eastern Rockies in winter and spring, known as the 'snow-eater'.
• Foehn descends the northern lee valleys of the Alps; the Chinook is its North American equivalent.
• Descent warming works because air cools at the saturated adiabatic rate ascending and warms at the dry adiabatic rate descending.
• Loo impacts are largely harmful - heat mortality, crop wilting, evapotranspiration loss - though its thermal low helps draw the monsoon.
• Chinook and Foehn have mixed effects: exposed winter pasture and early fruit ripening against snowmelt flooding, avalanche and fire risk.

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• Climate-smart agriculture's three pillars - productivity, resilience, mitigation - all demand field-scale observation only satellites can supply affordably.
• FASAL and KRISHI-DSS use optical and radar imagery for pre-harvest acreage and yield forecasts guiding procurement.
• NDVI and NDWI indices flag plot-level nutrient and moisture stress for precision advisory.
• PMFBY's YES-TECH framework uses remote sensing to cut dependence on slow crop-cutting experiments.
• NISAR provides all-weather L- and S-band radar; TRISHNA targets thermal measurement of crop water stress.
• Thermal hotspot detection supports stubble-burning enforcement and methane mapping in flooded rice.
• Limits: 1.08 hectare average holdings, monsoon cloud cover for optical sensors, and weak last-mile extension.

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