UPSC Mains Syllabus: Complete Paper-Wise Guide

Fact: The UPSC Mains examination consists of nine papers — Paper A (Indian language), Paper B (English), Essay, General Studies I–IV, and Optional Subject Paper I and II.

Fact: Papers A and B are qualifying in nature; the remaining seven papers are counted for merit, giving a total of 1750 marks for the written component of the exam.

For aspirants, this means that while all nine papers must be written seriously, continuous answer-writing practice and content building should be focused on the seven merit papers — especially GS and Optional, which demand conceptual depth and structured expression.

Fact: The Essay paper (usually Paper I of the merit papers) is of 250 marks and typically requires candidates to write essays on multiple topics chosen from given sections.

Fact: Topics often relate to governance, philosophy, social issues, economy, technology, or international relations and expect the candidate to present a balanced, well-structured argument.

In preparation, it is useful to practise full-length essays weekly, focusing on introduction–body–conclusion flow, multidimensional coverage (social, economic, political, ethical), and the ability to integrate examples from history and current events.

Fact: GS Paper I covers Indian Heritage and Culture, History and Geography of the World and Society.

Fact: GS Paper II covers Governance, Constitution, Polity, Social Justice, and International Relations.

Fact: GS Paper III covers Technology, Economic Development, Biodiversity, Environment, Security, and Disaster Management.

Fact: GS Paper IV covers Ethics, Integrity, and Aptitude, including case studies to test ethical reasoning and decision making.

Practically, each GS paper demands not just knowledge but the ability to write 150–250 word answers quickly. A good strategy is to maintain separate notebooks or digital folders for each paper, regularly updating them with static notes and current-affairs examples mapped to the syllabus headings.

Fact: Candidates choose one optional subject from a list notified by UPSC; this subject has two papers of 250 marks each, both counted for merit.

Fact: Optional subjects can be from various disciplines such as humanities, science, engineering, and literature subjects, subject to the list announced each year.

Since Optional accounts for 500 marks, it can significantly influence your final rank. Selection should be based on interest, graduation background (if helpful), availability of materials, and quality of guidance. Regular test series and answer-writing practice in the chosen optional are crucial for high scores.

Fact: Paper A is an Indian language paper (selected from the languages listed in the Eighth Schedule of the Constitution), and Paper B is English. Both are of 300 marks each and are qualifying in nature.

Fact: Candidates must secure minimum qualifying marks in both language papers; if they fail, their other papers are not evaluated for merit, even if they performed well in GS, Essay, and Optional.

For preparation, reading newspapers, practising basic comprehension, précis writing, and letter/essay formats in both the chosen Indian language and English is usually sufficient to safely clear these papers.