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Sodium Lamps vs LED Lamps for Street Lighting — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Advanced Materials / Science and Technology / UPSC Prelims PYQsDirectional Lighting / LED Lamps / Light Emission / Sodium Lamps / Street Lighting
Why Water Is a Universal Solvent — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Chemistry / General Science / UPSC Prelims PYQsDipolar Molecules / Solubility / Universal Solvent / Water Chemistry / Water Polarity
Adenoviruses and Retroviruses — UPSC Prelims PYQ 2021Jeevan Bisht2021 / General Science / Health and Diseases / UPSC Prelims PYQsAdenoviruses / AIDS / Common Cold / HIV / Retroviruses
Culturing Bacteria, Fungi and Viruses — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Biology / General Science / UPSC Prelims PYQsArtificial Media / Bacteria / Fungi / Virus Culturing / Viruses
Pressure Cooker Temperature Factors — UPSC Prelims PYQ 2021Jeevan Bisht2021 / General Science / Physics / UPSC Prelims PYQsBoiling Point / Pressure / Pressure Cooker / Steam Pressure / Temperature
Bollgard I & II Technologies — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Biotechnology / Science and Technology / UPSC Prelims PYQsBacillus thuringiensis / Bollgard Technologies / Bt Cotton / Genetically Modified Crops / Monsanto
Mitochondrial Replacement Therapy & Inheritance — UPSC Prelims PYQ 2021Jeevan Bisht2021 / General Science / Health and Diseases / UPSC Prelims PYQsMaternal Inheritance / Mitochondrial Diseases / Mitochondrial DNA / Mitochondrial Donation / Mitochondrial Replacement Therapy
Recombinant Vector Vaccines — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Biotechnology / Science and Technology / UPSC Prelims PYQsBiological Vectors / Genetic Engineering / Recombinant DNA Technology / Recombinant Vector Vaccines / Vaccines
Parent rock of black cotton soil — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Geography / Indian Geography / India’s Soils / UPSC Prelims PYQsBasalt / Black Soil / Deccan Trap / Fissure Volcanic Rock / Regur Soil
Moringa, tamarind and related facts (MFP & exports) — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Species / UPSC Prelims PYQsAgricultural Exports / Biofuels / Minor Forest Produce / Moringa oleifera / Tamarind
Water distribution: rivers, groundwater and ice caps — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Climatology / Geography / Physical Geography / UPSC Prelims PYQsFreshwater / Glaciers / Groundwater / Ice Caps / Rivers
Factors checking forest development in savannahs — UPSC Prelims PYQ 2021Jeevan Bisht2021 / UPSC Prelims PYQsFire Ecology / Grazing Herbivores / Savannah Ecosystems / Savannah Grasslands / Seasonal Rainfall
Biome described by rapid leaf-litter decomposition — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Climatic Regions / Geography / Physical Geography / UPSC Prelims PYQsClimbing Plants / Epiphytes / Forest Biomes / Leaf Litter Decomposition / Tropical Rainforests
Climate‑Smart Village, CCAFS, CGIAR and ICRISAT — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Climate Change / Climate Change Control / Environment / UPSC Prelims PYQsCCAFS / CGIAR / Climate-Smart Agriculture / Climate-Smart Villages / ICRISAT
Western vs eastern ocean warmth in tropical and temperate zones — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Climatology / Geography / Physical Geography / UPSC Prelims PYQsOcean Currents / Ocean Temperature / Trade Winds / Tropical Regions / Westerlies
Least water-efficient crop — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Agriculture / Geography / Major Crops / UPSC Prelims PYQsCrops / Sugarcane / Sunflower / Water Requirements / Water-Efficient Crops
Seabed Minerals and Licences — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Economic Geography / Geography / UPSC Prelims PYQsInternational Seabed Authority / Polymetallic Nodules / Rare Earth Elements / Seabed Mining / UNCLOS
Rivers Originating in the Eastern Ghats — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Geography / Indian Geography / India’s Rivers / UPSC Prelims PYQsBrahmani River / Eastern Ghats / Nagavali River / Subarnarekha River / Vamsadhara River
Didwana, Kuchaman, Sargol, Khatu — UPSC Prelims PYQ 2021 (Rajasthan Features)Jeevan Bisht2021 / Geography / Indian Geography / Physical Features of India / UPSC Prelims PYQsDidwana Lake / Khatu Lake / Kuchaman Lake / Saline Lakes / Sargol Lake
Indus River System: Which River Joins Indus Directly? — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Geography / Indian Geography / India’s Rivers / UPSC Prelims PYQsChenab river / Indus river / Jhelum River / Satluj River / Sutlej River
Palm Oil — Origins, Uses and Biodiesel — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Agriculture / Geography / Major Crops / UPSC Prelims PYQsBiodiesel / Cosmetics Industry / Elaeis guineensis / Palm Oil / Palm Oil Production
Permaculture vs Conventional Farming — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Agriculture / Farming Types / Geography / UPSC Prelims PYQsChemical Farming / Conventional Farming / Monoculture / Permaculture / Sustainable Agriculture
International Mother Language Day & Bengali demand — UPSC Prelims PYQ 2021Jeevan Bisht2021 / International Relations / Organisations and Groupings / UPSC Prelims PYQsBangla Language / Bengali Language Movement / Constituent Assembly / Pakistan / UNESCO
Bethune (Hindu Female) School secretary — UPSC Prelims PYQ 2021 (Duplicate)Jeevan Bisht2021 / UPSC Prelims PYQsBethune College / Bethune School / Female Education / Ishwar Chandra Vidyasagar / Women’s Education
Ajanta Caves and Other Sites — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Architecture / Art and Culture / Indian History / UPSC Prelims PYQsAjanta Caves / Ajanta Murals / Pandavleni Caves / Sanchi Stupa / Waghora River
Origins of Arcot, Mysore and Rohilkhand — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Indian History / Medieval India / Misc (Medieval) / UPSC Prelims PYQsArcot Principality / Mysore Kingdom / Nizamat of Arcot / Rohilkhand Kingdom / Vijayanagara Empire
Shah Nawaz Khan, Sehgal & Dhillon — UPSC Prelims PYQ 2021 (INA officers)Jeevan Bisht2021 / Indian History / Modern India / Post-War Struggle / UPSC Prelims PYQsGurbaksh Singh Dhillon / INA Trials / Indian National Army / Prem Kumar Sehgal / Shah Nawaz Khan
Bethune (Hindu Female) School secretary — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Indian History / Modern India / Personalities / UPSC Prelims PYQsBethune College / Bethune School / Female Education / Ishwar Chandra Vidyasagar / Women’s Education
Administrative units Pargana, Sarkar, Suba — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Indian History / Medieval India / Mughal Empire / UPSC Prelims PYQsAkbar / Mughal Administration / Pargana / Sarkar / Suba
‘Songs from Prison’ translator — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Indian History / Modern India / Personalities / UPSC Prelims PYQsGandhi Writings / Mahatma Gandhi / Sanskrit Hymns / Songs from Prison / Upanishads
Quit India Resolution — UPSC Prelims PYQ 2021 (8 August 1942)Jeevan Bisht2021 / Indian History / Modern India / Nationalist Movement (WW II) / UPSC Prelims PYQsCongress Working Committee / Cripps Mission / Gowalia Tank / Quit India Movement / Quit India Resolution
Montagu-Chelmsford Reforms and Government of India Act — UPSC Prelims PYQ 2021Jeevan Bisht2021 / British Administration / Indian History / Modern India / UPSC Prelims PYQsLegislative Reservation / Montagu-Chelmsford Reforms / Provincial Councils / Women’s Franchise / Women’s Reservation
UPSC Prelims PYQ 2019: Bhavabhuti, Hastimalla and Kshemeshvara — famous asJeevan Bisht2021 / Art and Culture / Indian History / Language and Literature / UPSC Prelims PYQsBhavabhuti / Hastimalla / Kshemeshvara / Sanskrit Drama / Sanskrit Literature
UPSC Prelims PYQ 2021: Mitakshara vs Dayabhaga — inheritance rulesJeevan Bisht2021 / Ancient India / Indian History / Misc (Ancient) / UPSC Prelims PYQsDayabhaga / Hindu Law / Inheritance Law / Mitakshara / Property Rights
UPSC Prelims PYQ 2021: St. Francis Xavier — Jesuit founder and Goa feastJeevan Bisht2021 / Indian History / Modern India / Personalities / UPSC Prelims PYQsChristian Festivals / Goa Festivals / Jesuit Order / Old Goa / Society of Jesus
UPSC Prelims PYQ 2021: Historical statements on Iltutmish, Muhammad bin Tughluq, Deva Raya IIJeevan Bisht2021 / Delhi Sultanate / Indian History / Medieval India / UPSC Prelims PYQsDeva Raya II / Genghis Khan / Iltutmish / Muhammad bin Tughluq / Vasco da Gama
UPSC Prelims PYQ 2021: Matching historical sites — Burzahom, Chandraketugarh, GaneshwarJeevan Bisht2021 / Ancient India / Indian History / Misc (Ancient) / UPSC Prelims PYQsArchaeological Sites / Burzahom / Chandraketugarh / Ganeshwar / Neolithic Culture
UPSC Prelims PYQ 2021: Madanapalle — Tagore’s translation of the National AnthemJeevan Bisht2021 / Indian History / Modern India / Personalities / UPSC Prelims PYQsJana Gana Mana / Madanapalle / National Anthem / Rabindranath Tagore / Theosophical Society
UPSC Prelims PYQ 2021: Nuniz on women in Vijayanagara — areas of expertiseJeevan Bisht2021 / Indian History / Medieval India / Vijayanagar Empire / UPSC Prelims PYQsNuniz / Portuguese Chroniclers / Vijayanagara / Vijayanagara Empire / Women’s Empowerment
UPSC Prelims PYQ 2021: Kingdoms in North India between Gupta decline and HarshavardhanaJeevan Bisht2021 / Ancient India / Gupta Empire / Indian History / UPSC Prelims PYQsHarshavardhana / Later Guptas / Maitrakas / Maukharis / Pushyabhutis
English EIC factories in early 17th century – UPSC Prelims PYQ 2021Jeevan Bisht2021 / European Settlement / Indian History / Modern India / UPSC Prelims PYQsBritish Factories / Broach / English Factory / Masulipatnam / Surat
Dholavira water-harvesting system – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Ancient India / Indian History / Indus Valley Civilisation / UPSC Prelims PYQsDholavira / Harappan civilization / Indus Valley Civilization / Water Conservation / Water Harvesting
Chausath Yogini Temple (Morena) facts – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Architecture / Art and Culture / Indian History / UPSC Prelims PYQsChausath Yogini Temple / Indian Temples / Kachchhapaghata Dynasty / Morena / Temple Architecture
Symbiotic species in Cnidarians, Fungi, Protozoa – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Environment Basics / UPSC Prelims PYQsCnidarians / Coral-Algae Symbiosis / Fungi / Protozoa / Symbiotic Association
Common Carbon Metric for buildings – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Climate Change / Climate Change Control / Environment / UPSC Prelims PYQsBuilding Emissions / Building Operations / Carbon Footprint / Common Carbon Metric / UNEP
Detritivores (earthworm, millipede, woodlouse) – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Environment Basics / UPSC Prelims PYQsDecomposition / Detritivores / Earthworms / Millipedes / Woodlice
Unconditional Cash Transfers (UCTs) to Women: Benefits, Initiatives & ChallengesJeevan BishtGovernance / Mains Pathfinder (Daily Mains Answer Writing) / Pathfinder for Mains – 2026Direct Benefit Transfers / Financial Inclusion / Social Protection / Unconditional Cash Transfers / Women’s Economic Empowerment
Phosphorus cycle and rock weathering – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Biogeochemical Cycling / Environment / UPSC Prelims PYQsBiogeochemical Cycles / Nutrient Cycling / Phosphorus / Phosphorus Cycle / Weathering
Filter feeders – UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Species / UPSC Prelims PYQsAquatic Ecosystems / Filter Feeders / Marine Ecology / Oysters / Water Quality
Sources of magnetite particle pollution — UPSC Prelims PYQ 2021Jeevan Bisht2021 / Environment / Pollution and Degradation / UPSC Prelims PYQsAir Pollution / Brake Wear / Magnetite Pollution / Motor Vehicle Engines / Power Plants