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UPSC SYLLABUS – IAS, IPS, IFS Syllabus Prelims, Mains.



UPSC: UPSC stand for Union Public Service Commission. UPSC conducts many exams every year for the recruitment of various department in Central Government, Home Ministry, State Governments etc. The Famous exam is CSE which is conducted by UPSC and one of these exam posts is IAS. Many aspirants in India prepare for the CSE exam to become an IAS officer and serve the country. This article gives you a broad knowledge about the UPSC exam, full form of UPSC, and what you have to study and what are the syllabus. Read the full article to know about the exam details. This website also provides job updates. To get the job update related to the private as well as the government sector you can follow teamnaukri. in. 


UPSC DETAILED SYLLABUS 2020 – IAS, IPS, IFS Syllabus Prelims, Mains

Welcome to Team Naukri Here, you will find the detailed syllabus for Civil Services Examination which is conducted by the Union Public Service Commission (UPSC). The Civil Services considered the most prestigious and one of the toughest examination conducted in India. Every year more than 10 Lakhs of aspirants submit an application for Civil Services.  UPSC IAS syllabus is like from fruit to root of information and knowledge.

Full Form Of UPSC- UPSC stand for union public service commission.

IAS Civil Services syllabus is the interplay of different topics which makes it a little confusing and difficult. In IAS, IPS, IFS Examination, some subjects are very dynamic in nature. Before understanding the Civil Services Examination, first, we have to understand the detailed syllabus of the IAS, IFS, and IPS Examination. The candidates need to concentrate and understand the inter-dynamics of various topics and hence prepare them with the previous year UPSC IAS question paper.

Here we provide the UPSC Syllabus for UPSC IAS, IPS, IFS, IRS & IFoS candidates can check UPSC Syllabus before start preparing for any exam. The UPSC IAS Syllabus is set by the Union Public Service Commission. UPSC  syllabus [UPSC Civil Services Prelims and Mains] has been released along with the official notification for the UPSC Civil Service Exam.

This exam comprises of three stages namely Prelims, Mains and Interview. Prelims include two objective types (MCQ) exam, while the Mains is comprehensive which comprises nine subjective papers exam and in Interview tests, the candidate intelligence, attentiveness, balance of judgment, and human qualities like honesty, integrity, and leadership are checked.

The Civil services exam is conducted in three stages:

Stage 1: UPSC Preliminary Examination (Objective Type)

Stage 2: UPSC Mains Examination (Descriptive Type)

Stage 3: UPSC Personal Interview (Personality Test)

Stage 1: UPSC Prelims Exam

The UPSC Civil Services Prelims Examination comprises of two papers:

                  1.General Studies.

                  2. CSAT (Civil Services Aptitude Test)

UPSC Prelims Examination
Paper Subjects Questions Time Marks
I General Studies (GS) 100 2  Hours 200
II CSAT (Civil Services Aptitude Test) 80 2  Hours 200 (Qualifying Paper)
Total 200
  • In Paper I General Studies aspirants awarded with 2 marks for each correct answer and 0.66 will be deducted for each wrong answer.
  • In Paper II CSAT (Civil Services Aptitude Test) aspirants awarded with 2.5 marks for each correct answer and 0.83 will be deducted for each wrong answer.

The qualifying marks of CSAT are 33%, Paper-II CSAT marks will not be considered in the final result (merit list).

UPSC Prelims Examination Syllabus: General Studies (Paper I)

  • Current events of national and international importance.
  • History of India and Indian National Movement.
  • Indian and World Geography-Physical, Social, Economic Geography of India and the World.
  • Indian Polity and Governance-Constitution, Political System, Panchayati Raj, Public Policy, Rights Issues, etc.
  • Economic and Social Development-Sustainable Development, Poverty, Inclusion, Demographics, Social Sector Initiatives, etc.
  • General issues on environmental ecology, biodiversity, and Climate Change – that do not require subject specialization.
  • General Science

UPSC Prelims Examination Syllabus: CSAT (Paper I)

  • Comprehension
  • Interpersonal skills including communication skills
  • Logical reasoning and analytical ability
  • Decision making and problem-solving
  • General mental ability
  • Basic numeracy (numbers and their relations, orders of magnitude, etc.)(Class X level), data interpretation (charts, graphs, tables, data sufficiency, etc. — Class X level).

Stage 2: UPSC Mains Examination (1750 Marks)

  • UPSC Mains Examination (IAS Mains) is the second stage of the Civil Services Examination. The candidates will be allowed to write this exam only after qualifying UPSC prelims Examination (IAS Prelims).
  • The Mains exam is a descriptive type(conventional) in which candidates needs to write a long detailed answer which tests the candidate’s depth of knowledge and his/her ability to present his/her opinion according to the requirement of question in a given period of time.
  • UPSC Mains Examination consists of 9 papers, out of which 2 papers are qualifying papers of each 300 marks.

      The two qualifying papers are:

  1. One of the Indian language (Qualifying Only)
  2. English (Qualifying Only)
Construction of the language papers:
  • Essay – 100 Marks
  • Precis Writing – 60 Marks
  • Reading Comprehension  – 60 Marks
  • Translation:
  1. From English to selected language – 20 Marks
  2. From selected language to English – 20 Marks
  • Basic Language and Grammar – 40 Marks

UPSC IAS Mains Syllabus






Paper A Indian language 3 Hours 300 (Min.25%) Qualifying (Min. 75 marks)
Paper B English 3 Hours 300 (Min.25%) Qualifying (Min. 75 marks)
Paper I Essay 3 Hours 250 Scoring
Paper-II General Studies I 3 Hours 250 Scoring
Paper III General Studies II 3 Hours 250 Scoring
Paper IV General Studies III 3 Hours 250 Scoring
Paper V General Studies VI 3 Hours 250 Scoring
Paper VI Optional I 3 Hours 250 Scoring
Paper VII Optional II 3 Hours 250 Scoring
IAS Mains Total (written) 1750
IAS Interview 275
Total 2025


  • Candidates require to score min. 25% score in qualifying paper i.e, 75 marks each.
  • All other seven papers are scoring and their marks will be included in the final merit list.
  • Candidates can answer the entire scoring subject in English or any of the eight schedule language.
  • Candidates have to choose any one subject from the table given below as their Optional subjects for Paper VI and Paper VII.

UPSC IAS Mains Optional Subjects List

Agriculture Psychology Anthropology Botany Zoology
Civil Engineering Electrical Engineering Mechanical Engineering Physics Geology
Medical Science Mathematics Statistics Economics History
Chemistry Commerce and Accountancy Geography Sociology Management
Philosophy Political Science and International Relations Public Administration Animal Husbandry and Veterinary Science Law

Literature of any one of the following languages

Assamese Bengali Bodo Dogri
Gujarati Hindi Kannada Kashmiri
Konkani Maithili Malayalam Manipuri
Marathi Nepali Odia Punjabi
Sanskrit Santhali Sindhi Tamil
Telugu Urdu English


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