[03] 20-20 and 50-50 Series 2021


  • Extremely High Yielding topics for Prelims.
  • You can expect 20 to 40+ questions directly from these topics, and at least 50 questions indirectly. [Kindly remember that the cut-off itself is approx. 50%.]
  • Why such a high Hit rate in Prelims: Simple! These topics are made from UPSC Previous year papers. UPSC invariably asks these topics in Prelims for past 40+ years.
  • Total number of topics: Approx. 100 (1-3 pages notes)
  • 20-20 meaning: Approx 20-25 topics. These are some small topics- Time to revise = approx. 20 minutes.
  • 50-50 meaning: Approx 50 topics. These are relatively larger topics- Time to revise = approx. 40-50-60 minutes.
  • This course, along with 5 Basic books, and Synopsis IAS Current Affairs Programme would be a decisive step for your Prelims.
  • Read Description for topic list.


Topic List

Maps (Location and Description)

  • Biomes and Climate: World
  • Natural Vegetation of India; not climate.
  • Biosphere Reserves (18); National Parks; Tiger Reserves; Wildlife Sanctuaries;
  • Ramsar Sites
  • Southeast Asia; West Asia
  • Lines: (3 + 2 + 2): Countries; Cities; Seas/ Oceans.
  • Soils of India: ICAR-8; not World.
  • Maps of India
  • National Waterways
  • Previous Year Questions: Very Important


  • IUCN: Status; Geographical distribution; State Bird/Animal.
  • Treaty/Protocol: Origin; India is a member?; Objective. (8-10)
  • Indian Environment Laws: Like Air act, Water Act etc. (6-70
  • Funds: Who; India is a member?; for whom/objective. For Example Green Climate Fund
  • Type of Pollutants: 2 NAQI
  • Environmental Bodies: HQ; Aim; India is a member.
  • Three Compilations to replace Shankar IAS.

International Relations

  • International Grouping: Member (India); Headquarter (if any)
  • Indices and Reports: Who; Components. (not Rank)
  • International Banks: Members (India); Share of members (a>b>…); Headquarter; Objective. [Learn only 4 multilateral financial institution– NDB, AIIB, World Bank, IMF.
  • International agreements: like P5+1, BTIA, Nuclear deals, banking deals, child, labor, corruption, terrorism etc.
  • Transport Corridor: Declaration; Member countries; Multi-Model.
  • West Asia: Important terms in news. For example: Two State Solution
  • International Organisations: Headquarter; India is a Member; objective/ Moto. For Example UNSC.


Approx. 30 pages notes. Note: This subject coincides with current affairs and with Geography.

  • Monetary Policy: Components and Definition
  • Budget: Components and Definition
  • BOP: Components and Definition
  • National Income: GDP; Inflation.
  • Economics Survey: 15- 20 terms every year.
  • Indices: Who releases what? E.g CSO- WPI, CPI etc.


  • Ministry/department: Structure ; Policy/scheme.
  • Policy/scheme: Which ministry; Target Group/ Year.
  • Polity: 5th and 6th Schedule; Union Territory; 73rd And 74th Constitutional Amendment.

Science and Technology

  • BARC (Nuclear Technology)
  • DRDO (Defence Technology)
  • Space Technology: ISRO – PSLV; GSLV; Orbits.
  • Biotechnology, Nanotechnology, Computers and IT.
  • IPR issues

Internal Security

  • Indian Missile Program
  • Aircraft Carriers
  • Naval Ships
  • Submarines
  • Current Affairs: UAVs, Weapons, Aircrafts.
  • Military Exercises: Army, Navy, and Air.
  • Military Negotiations: Members (learn exceptions); India is a member?; Aim and Specific Terms.
  • Nuclear and Space: Integrate it with Science and Technology.


  • Ancient and Medieval: Important terms -one liner.
  • Ancient and Medieval: Map, Capital, Port and Rivers separating territory.
  • Freedom Struggle: Event; Personality; Chronology.
  • British Policy: White racism; Social and Cultural Policy; Economic Policy; Land Tenure; Relation with Indian States; Foreign Policy; Policy for Local Bodies; Police Reforms; Army Reforms; Judicial Reforms; Civil Service Reforms; Education Policy; Policy for Press;
  • British Policy: Constitutional Development
  • Indian Response: Trade Union; Peasant Revolt; Tribal and Civil Uprising.
  • Social Reform Movement: Name of Person; Organisation; Published Book/ Ideology.
  • Viceroy
  • Congress Sessions: Year; Location; President; Moto.

Art and Culture

  • Literature: Name, Time.
  • Religion: Buddhism + Jainism + Hinduism + Sufism + Bhaktism.
  • Society.
  • Administration.
  • Travellers.

Miscellaneous Topics

  • Tribes, with especial emphasis on PVTGs
  • Committees
  • Intangible Heritage
  • World Heritage Site
  • Jhum; water storing; viticulture etc. etc.