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Prelims Sureshots - Repeated/Most-Probable Topics for UPSC Prelims

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  1. POLITY

    Complete list of amendments in Indian Constitution
  2. Government Agencies
  3. [Table Chart] Comparison between various posts/bodies with respect to Tenure, Appointment, and Removal
  4. Landmark Acts that Shaped India
  5. Landmark Judgements that Shaped India
  6. HISTORY
    Important terms of Ancient India
  7. Important terms of Medieval India
  8. Important Terms of British India
  9. Important Personalities of Modern India
  10. [Table Chart] Indian Kingdoms & Founder Rulers
  11. ECONOMY
    Indexes/Reports of Organizations
  12. Important Economic Terms
  13. [Table Chart] India's export data
  14. [Table Chart] India's import data
  15. ENVIRONMENT
    Natural Ecosystems (Types of forests, Grasslands, etc)
  16. [Table Chart] Threatened species in India (IUCN Red list)
  17. Scheduled Animals of WPA 1972
  18. Organism Facts (Ants, Cockroach, Spider, etc)
  19. Trees
  20. Protected Areas (National Parks, Wildlife Sanctuaries, Biosphere Reserves, etc.)
  21. India’s conservation efforts (Environmental Legislations, authorities, organisations, etc.)
  22. International conservation efforts (Important environmental organisations, agreements, etc.)
  23. GEOGRAPHY
    Physiographic Regions of World
  24. Climatic Regions of World
  25. Oceans and Bordering Countries
  26. Countries through which Equator, Tropic of Cancer & Tropic of Capricorn passes
  27. India - Minerals, Rivers, Lakes, Glaciers, Mountains, etc.
  28. Major Waterfalls in India - their geographical region, Source river
  29. Major Crops & Cropping Patterns
  30. SCIENCE & TECHNOLOGY
    Space Missions (World and India)
  31. Important Technologies
  32. SOCIAL JUSTICE
    Schemes & Welfare Programmes: Ministry-Wise Compilation
  33. INTERNATIONAL RELATIONS
    International Organisations & Groupings
  34. Important Declarations
  35. Joint Military Exercises
  36. Important International Conventions
  37. International Pipelines
  38. Defence
    Military Aircrafts
  39. Military Seacrafts
  40. Missiles
  41. Ranks in Indian Defence Forces
TreeScientific NameHeight (m)LifespanNative RegionClimate SuitabilityWood UseOther UsesCultural ImportanceSpecial FeatureEnvironmental Role
AppleMalus domestica5-1250-100 yrsCentral AsiaTemperateNot widely usedEdible fruit; cider productionSymbol of health and knowledgeProduces diverse apple varietiesSupports pollinators
OrangeCitrus sinensis6-1050-80 yrsSoutheast AsiaSubtropical, TropicalNot used commerciallyEdible fruit; juice productionCelebrated in Chinese New YearHigh Vitamin C contentAttracts bees and insects
PeachPrunus persica3-620-30 yrsChinaTemperate, SubtropicalNot used commerciallyEdible fruit; skin care productsSymbol of longevity in Chinese cultureSoft, fuzzy skinProvides nectar for pollinators
PearPyrus spp.5-1550-100 yrsEurope, AsiaTemperateUsed for furnitureEdible fruit; ornamentalSymbol of wisdom in ancient culturesDistinctive teardrop shapeImproves air quality
PlumPrunus domestica3-620-30 yrsEurope, AsiaTemperateNot used commerciallyEdible fruit; dried as prunesRepresents resilience in folkloreWide variety of colorsAttracts pollinators
AvocadoPersea americana10-20200-400 yrsCentral AmericaTropical, SubtropicalNot used widelyEdible fruit; oil for cosmeticsSacred to the AztecsRich in healthy fatsProvides shade and stabilizes soil
OliveOlea europaea3-15500-1000+ yrsMediterraneanWarm, DryHard, dense woodOlive oil; edible fruitSymbol of peace in many culturesExtremely long-livedHelps prevent soil erosion
FigFicus carica5-1050-75 yrsMiddle East, West AsiaWarm, DryNot used widelyEdible fruit; medicinal usesMentioned in religious textsProduces multiple harvests annuallyHabitat for diverse insects
LemonCitrus limon3-650-80 yrsSoutheast AsiaTropical, SubtropicalNot used commerciallyEdible fruit; cleaning productsUsed in detox and healing ritualsHigh acidity; strong aromaAttracts pollinators
PapayaCarica papaya3-105-10 yrsCentral AmericaTropical, SubtropicalNot used commerciallyEdible fruit; medicinal usesKnown as “fruit of the angels”Produces fruit year-roundImproves soil fertility

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TreeScientific NameHeight (m)LifespanNative RegionClimate SuitabilityWood UseOther UsesCultural ImportanceSpecial FeatureEnvironmental Role
BanyanFicus benghalensis20-25200-300 yrsSouth AsiaHumid, SubtropicalNot commercialMedicinal; shadeSacred in HinduismSpreads through aerial rootsPrevents soil erosion
Coconut PalmCocos nucifera20-3080-90 yrsTropical AsiaWarm, CoastalNot used widelyEdible fruits; oil; coirUsed in rituals across AsiaGrows on saline soilsProvides coastal stability
MangoMangifera indica10-30100-200 yrsIndian SubcontinentTropical, SubtropicalMedium-hard woodFruits; jams; picklesNational tree of BangladeshFruit known as “king of fruits”Provides shade and habitat
NeemAzadirachta indica15-25150-200 yrsIndian SubcontinentHot, AridMedium-hard timberMedicinal; pest repellentKnown as the “Village Pharmacy”Resistant to droughtPurifies air; pest control
TeakTectona grandis20-40100-150 yrsSouth and Southeast AsiaHumid, TropicalHigh-value hardwoodFurniture; boatsUsed in royal architectureHigh oil content in woodHigh-value timber species
JackfruitArtocarpus heterophyllus15-20100+ yrsSouth and Southeast AsiaHumid, WarmMedium-density woodEdible fruit; seeds; leavesPopular in traditional cuisinesLargest tree-borne fruitProvides food for wildlife
CashewAnacardium occidentale10-1550-60 yrsBrazilTropical, CoastalNot used widelyEdible nuts; resin; oilValued for its economic benefitsProduces “cashew apples”Fixes nitrogen in soil
MahoganySwietenia mahagoni30-40200+ yrsAmericasTropical, HumidPremium hardwoodFurniture; musical instrumentsIcon of quality furniture worldwideDeep reddish-brown woodSupports biodiverse ecosystems
Rubber TreeHevea brasiliensis15-25100 yrsAmazon BasinTropical, RainySoftwood, not durableLatex for rubber productionRevolutionized the rubber industrySap produces natural rubberAbsorbs large amounts of CO2
EbonyDiospyros spp.15-25150-200 yrsAsia, AfricaWarm, TropicalHard, black timberFine furniture; carvingsUsed in ancient and modern artDense black heartwoodCarbon sequestration

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