Most Repeated Topics in UPSC Prelims from 2016 to 2025 — Data Analysis

April 26, 2026 · 5 min read · My UPSC Syllabus

Which Prelims topics keep coming back? Using the tracker's topic-level PYQ data for 2016–2025, here are the most consistent topics, the ones asked in each of the last three papers, and how each subject compares.

Which UPSC Prelims topics keep coming back? This analysis uses the topic-level previous-year-question (PYQ) data behind this tracker: for each of the 88 Prelims GS Paper I topics, the years between 2016 and 2025 in which it was asked. It counts the years a topic appeared, not the number of questions, so it measures consistency rather than weight.

THE SHORT ANSWER:
No Prelims topic appears every year. The most consistent topics appeared in 7 of the 10 years. Most topics sit in the middle: 61 of the 88 appeared in 4 or 5 years. Only 11 appeared in 3 years or fewer.

THE MOST CONSISTENT TOPICS — 7 OF 10 YEARS:
Gandhi and mass movements — Non-Cooperation, Civil Disobedience, Quit India (2016, 2017, 2019, 2021, 2023, 2024, 2025)
Temple architecture — Nagara, Dravida, Vesara, Buddhist and Jain monuments (2017, 2018, 2019, 2021, 2022, 2024, 2025)
Heritage governance — UNESCO lists, ASI, GI tags, PRASAD, HRIDAY (2018, 2020–2025)
Space technology — ISRO missions, satellites, planetary science (2017, 2019, 2021–2025)
Biotechnology — genomics, GM crops, vaccines, CRISPR (2018–2023, 2025)

THE NEXT TIER — 6 OF 10 YEARS:
Eleven topics: the monsoon (ENSO, IOD, MJO); Himalayan and Peninsular drainage; transport networks; map-based world geography; the Mauryan Empire; the Sangam Age and South Indian kingdoms; Fundamental Rights; RBI, monetary policy and banking; climate change and the Paris Agreement; general science (biology); and emerging technologies such as AI, semiconductors and quantum computing.

ASKED IN EACH OF 2023, 2024 AND 2025:
Seven topics appeared in all three of the most recent papers: Gandhi and mass movements, heritage governance, space technology, emerging technologies, Himalayan and Peninsular drainage, transport networks, and map-based world geography. If your time is short, these are a sensible place to start.

SUBJECT BY SUBJECT:
Science and Technology topics are the most consistent, appearing on average in 5.8 of the 10 years. Art and Culture follows at 5.4 and Ancient History at 5.1. Environment averages 4.8, Indian Geography 4.7 and Polity 4.4. Physical Geography and Economy average 4.2, and Medieval and Modern History 4.1. Polity, Economy and Indian Geography each have 12 topics, so even with a lower average they cover a large part of the paper.

LESS FREQUENT — BUT NOT SAFE TO SKIP:
Eleven topics appeared in three years or fewer, including the solar system and Earth's motions, the integration of princely states after independence, labour and left movements, financial markets and SEBI, and international trade and the WTO. A topic that has been quiet can return in any year, so treat these as lower priority for extra revision, not as optional.

HOW TO USE THIS:
Use frequency to decide how often to revise a topic, not whether to study it. Give the 6- and 7-year topics an extra revision round before the exam. Every topic has its own page in the syllabus tracker showing exactly which years it was asked — tick off your revisions there as you go.

A NOTE ON THE DATA:
These counts come from the tracker's topic-level PYQ data for 2016–2025. They show the years a topic was asked, not how many questions it carried, and they depend on how the syllabus is grouped into topics. Treat them as a guide to emphasis, not a prediction.

Tags: Prelims, Trend Data, Frequency Analysis, 2016-2025