20-20 & 50-50 Series

70 Most Important Topics for Prelims

4.3 (343)

Rs. 1800 Only


What is 20-20 & 50-50 Series by Synopsis IAS?

This course covers 70 most important topics for Prelims. These are the extremely High Yielding topics for Prelims.

These Topics have always been UPSC’s favourite, that is why UPSC is asking questions from these topics for past 40+ years. There is no reason that UPSC would not ask questions from these topics in the upcoming years.

This course, along with 5 Basic books, and Synopsis IAS Current Affairs Programme are good enough to qualify the 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.

20-20 meaning: Approx 20 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. 50 minutes.

UPSC has to ask questions from these topics. IF UPSC would stop asking questions from these topics, the Cut-offs would go below 70, or may be even 50.

From this course, 30+ questions were there in Prelims 2022.

From this course, 40+ questions were there in Prelims 2021.

From this course, 38 questions were asked in Prelims 2020.

From this course, 64 questions were asked in Prelims 2019.

This course covers the following subjects completely: Science and Technology, Internal Security, International relations, Governance and Social Justice. There are no standard books available for these subjects till date. From 2022 onwards, we have included CSAT Topics in this course as well.

Validity of this course is till Prelims 2025.


Multiple Faculties

Course Pages

800+ Pages

Course Duration

50 Hours


Prelims 2025

Course Content / Syllabus

Following subjects are covered:

British Policies: 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 Policies: Constitutional Development
Indian Response to British Policies: Trade Union; Peasant Revolt; Tribal and Civil Uprising.
Social Reform Movement: Name of Person; Organisation; Published Book/ Ideology.
Congress Sessions: Year; Location; President; Moto.
Freedom Struggle: Event; Personality; Chronology.


Ancient and Medieval: Important terms -one-liner. Includes Society and Administration.
Ancient and Medieval: Map, Capital, Port, and Rivers separating territory.
Vijaynagara Empire
Indian Literature
Indian Philosophy including Hinduism as a Religion.
Religion: Buddhism, Jainism, Bhaktism and Sufism.
Rock-cut Architecture
Travelers and their accounts.
GI Tags.
Tribes, with especial emphasis on PVTGs
Heritage: Intangible Heritage, World Heritage Sites
Miscellaneous Topics like Jhum; water-storing; viticulture etc. etc.

Environmental Bodies: HQ; Aim; India is a member.
Treaty/Protocol: Origin; India is a member?; Objective. (8-10)
Indian Environment Laws: Like Air act, Water Act etc. (6-7)
Environmental Funds: Who; India is a member?; for whom/objective. For Example Green Climate Fund
Species: Protection Status (IUCN and Indian); Geographical distribution; State Bird/Animal.
Type of Pollutants: 2 NAQI
One Compilation to replace Shankar IAS.


International Financial Institution
International Organizations and Bodies
Treaty and Agreements
India and Neighbourhood
Transport Corridors and Connectivity
West Asia
Important Places in News


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


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.
Note: Economy, for this course, has approx. 30 pages notes. This subject coincides with current affairs and with Geography.


Nuclear Technology
Defence Technology
Space Technology: ISRO – PSLV; GSLV; Orbits.
Computers and IT.
IPR issues


Ministries, Schemes, Policies, Acts and bills

General Details

Lectures: There are pre recorded lectures by the highly qualified and experienced faculties.

Study material: Course study material will be available for registered students in downloadable and printable PDF format on the student dashboard. 

Personalized student dashboard: Registered Students get a Personalized student dashboard with a login password. You can watch the lectures anywhere, anytime and any number of times.

Two-way feedback: We take students’ feedback seriously. We can remove or replace faculties if the feedback is not good.

It is a Paid Batch for UPSC CSE aspirants. However, a number of videos are uploaded at YouTube for Demo and Awareness purpose.

Course Completion Date: 1 month before exam

Validity: Validity of this course is till Prelims 2024.

How is this course different from similar courses by other coachings?

Other coachings do not provide such course.

At Synopsis IAS, we have developed this course, after years of research and analysing the trend of UPSC.

This course provides high predictability factor in exam which other coachings fail to provide.

Krishna sir is the content head at Synopsis IAS. The course content is thoroughly reviewed by him. He has gained 7+ years of experience in Research and Development while in services at DAE, GOI.


We do not waste unnecessary time in selling coupons for courses, marketing, and promotions. The faculties just teach, teach and teach, and do not beat around the bush. The lecture duration is short – If other institute has covered the same topic in 1 hour, we cover that just in approx. 15-20 minutes.


We teach in easy Hinglish language. The content slides for the course are in Hinglish (One line English, One line Hindi).

The course is available in English and Hindi Mediums. The Study Material is in Three Languages: First file is in English, Second file is in Hindi, Third file is Bilingual (one line English, one line Hindi). The Lectures are delivered in Hinglish.


When it comes to guidance, noone can even come closer to Synopsis IAS. The Synopsis IAS institute is based on the vision of a person, who left services just to teach and provide genuine Guidance.

There are Strategy Videos by Krishna Sir: He has discussed the strategy to prepare for UPSC in cover in a realistic way in his most popular Guidance Series.


The course is available for a very less price compared to any other online or offline coaching.

Content Developers and Faculties

Multiple Faculties


Students Rating: 4.3 (343)

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