[Latest] CDS Syllabus PDF 2023 – OTA, IMA, INA, AFA

In this article, students will get CDS Latest updated syllabus 2023 for all four different academies: OTA (Officers Training Academy), IMA (Indian Military Academy), INA (Indian Naval Academy) and AFA (Air Force Academy). Combined Defence Service is a graduate level Entrance exam that allows students to join Indian Army, Navy and other defence sectors.

A career in Defence services is the much sought-after occupation today for those young and courageous youths of the country who are willing to dedicate their lives to defend the country and its people, the Combined Defence Services Examination is the first test before they can join one of the best defence forces in the world i.e. the Indian Armed Forces.

UPSC conducts the Combined Defence Services Exam twice every year generally in February and August for recruiting officers for the OTA, IMA, INA and AFA. The examination comprises two stages-the first stage consists of a written test which consists of three sections which are general knowledge, English and Mathematics whose detailed syllabus is given below then those who qualify for the written test are called for an interview by the Service Selection Board (SSB) for Intelligence and Personality Test whose details are also provided below.

CDS Exam Pattern for OTA, IMA, INA, and AFA

Before, jumping into the CDS syllabus section of the post, we need to first understand the exam pattern for Admission into OTA, IMA, INA, and AFA via CDS. To get more deep knowledge about exam pattern of asking questions and important portions of syllabus analyze the previous year papers of last 5-10 years which you can download by visiting the below link:-

CDS Exam Pattern for OTA

SubjectsMaximum MarksExam Duration
English100 Marks2 hours (120 minutes)
General Knowledge100 Marks2 hours (120 minutes)

CDS Exam Pattern for IMA, INA, AFA

SubjectsMaximum MarksExam Duration
English100 Marks2 hours (120 minutes)
General Knowledge100 Marks2 hours (120 minutes)
Elementary Mathematics100 Marks2 hours (120 minutes)

Latest CDS Syllabus PDF 2023

SECTION A: CDS English Syllabus

The section will test the candidates’ understanding of English and workmanlike use of words. Some of the topics are given below.

  • Spotting Errors Questions
  • Sentence Arrangement Questions
  • Synonyms & Antonyms
  • Selecting Words
  • Ordering of Sentence
  • Comprehension Questions
  • Ordering of words in a sentence
  • Fill in the blanks questions
  • Idioms and Phrases

SECTION B: CDS General Knowledge Syllabus

General Knowledge including knowledge of current events and of such matters of everyday observation and experience as may be expected of an educated person with a graduate degree. Questions will be based on various topics that are given below:

🔰 01.Economics🔰 09.Physics
🔰 02.Sociology🔰 10.Chemistry
🔰 03.History🔰 11.Biology
🔰 04.Politics🔰 12.Cultural
🔰 05.Geography🔰 13.Books Name and Authors
🔰 06.Environmental Science🔰 14.Statements
🔰 07.Defence-related Awards🔰 15.Sports
🔰 08.Current Affairs🔰 16.True and False

The detailed syllabus of CDS general knowledge as per the previous year questions trends is given in the table below :

History (18 to 23 Questions asked every year)

The history section consists of Ancient India, Medieval India, and Modern India. Topics like Medieval India dates back from the mid-8th Century to the beginning of the 18th Century AD and is formed of the Mughal, Vijayanagar Empire, Sultanate rulers along with the rising, and fall of all rulers, historical period of Modern India and Indian Culture like architecture, dance forms, literature, paintings, music, etc. are some of the important topics for general knowledge history.

Geography (15 to 17 Questions asked every year)

Drainage Systems, Soils, Census, Mineral resources distribution, Location of mountains, boundaries of States, passes, Atmosphere, Oceans, Landforms, Important tribal groups, especially those living in hilly areas, etc.

Polity (13 to 17 Questions asked every year)

Preamble, Schedules, Constitution of India, Citizenship, Fundamental Rights, Fundamental Duties, Directive Principles of State Policy, Union, Parliament, Judiciary, State Government, State Legislature, Administration of UT, Administration of Special Areas, Emergency Provisions, Panchayati raj and municipalities, Central and Interstate relations, Constitutional Bodies, Non-Constitutional Bodies, and Tribunals, etc.

Economics (12 to 14 Questions asked every year)

leading products of India like Pulses, Bananas, etc., and Green, White, and Blue Revolution, important industries of India, the Banking System of India, Currency and Inflation, working of international organizations like IMF, IDA, WTO, etc, census of India, etc. should be in your preparation list. Depreciation, Type of taxes: Wealth tax, Income tax, Service tax, etc.

Physics (8 to 10 Questions asked every year)

Measurement, Motion, Work, Energy and Power, Rotational Motion, Gravitation, Properties of Matter, Heat and Thermodynamics, Oscillations and Waves, Optics, Electric Current, Modern Physics

Chemistry (8 to 10 Questions asked every year)

Matter, Atomic Structure, Radioactivity, Chemical Bonding, Redox Reactions, Gas Laws, Solutions, Acids Bases and Salts, Chemical Thermodynamics, Surface Chemistry, Electrochemistry, Inorganic Chemistry, Organic Chemistry, Man-Made Materials, Environment and its Pollution

Biology (9 to 10 Questions asked every year)

Cell, The Unit of Life, Classification of Plants and Animals, Genetics and Molecular Biology, Evolution of Life, Plant Morphology and Physiology, Animal Physiology, Human Health and Diseases, Applied Biology

Static GK and Current Affairs (35 to 40 Questions asked every year)

For this section, aspirants need to be aware of the news at least 1 year before the exam date and 6 months before the filling of the application form.

CDS Practice problems:

SECTION C: CDS Mathematics Syllabus – (Elementary Mathematics)


Number System: Natural numbers, Rational & Real numbers, and Integers. Fundamental operations, subtraction, multiplication, addition, division, Square roots, Decimal fractions. Unitary method, time and work, percentages, time and distance, applications to simple & compound interest, ratio and proportion, profit and loss, variation.

Elementary Number Theory: Division algorithm. Prime and composite numbers. Tests of divisibility by 2, 3, 4, 5, 9, and 11. Multiples and factors. Factorisation Theorem. L.C.M. and H.C.F. Euclidean algorithm. Logarithms to base 10, use of logarithmic tables and laws of logarithms.


Basic Operations, simple factors, H.C.F., L.C.M., Remainder Theorem, Theory of polynomials, solutions of quadratic equations, the relation between its roots & coefficients (Only real roots to be considered). Simultaneous linear inequations in two variables and their solutions. Simultaneous linear equations in two unknowns — analytical & graphical solutions. Practical problems leading to two simultaneous linear equations or inequations in two variables or quadratic equations in one variable & their solutions. Rational expressions and conditional identities, Set language & set notation, and Laws of indices.


  • Sine ×, cosine ×, Tangent × when 0° < × < 90° Values of sin ×, cos × and tan ×, for × = 0°, 30°, 45°, 60° and 90°
  • Simple trigonometric identities.
  • Use of trigonometric tables.
  • Simple cases of heights and distances.


  • Plane & plane figures,
  • Lines & angles,
  • Theorems on Properties of angles at a point
  • Parallel lines
  • Sides & angles of a triangle
  • Congruency of triangles
  • Similar triangles
  • Concurrence of medians and altitudes
  • Properties of angles, sides, and diagonals of a parallelogram, square, and rectangle
  • Circles and their properties including tangents and normals
  • Loci


  • Areas of squares, rectangles, parallelograms, triangles and circles.
  • Surface area and volume of cuboids,
  • lateral surface and volume of right circular cones and cylinders,
  • Areas of figures which can be split up into these figures (Field Book),
  • surface area and volume of spheres


  • Collection and tabulation of statistical data,
  • Graphical representation frequency polygons, histograms, bar charts, pie charts, etc.
  • Measures of central tendency

NOTE : – If you need any help regarding your exam, preparation or demand of e-books, video lectures, syllabus etc then let us know 📌 in the Comment Section below. 

Many more CDS Study Materials which you found useful:

Question: Who can Join CDS 2023?

Answer: Recently, Females are also allowed to join CDS but only in the Officers Training Academy i.e., OTA as per their rule of eligibility of females for CDS. So, Male candidates can join all four sectors IMA, INA, AFA & OTA and Female candidates are allowed for OTA only.


I hope this article will help you in knowing about the CDS exam moreover you can comment us below for CDS syllabus 2023 pdf download link. Having a brief idea of the latest syllabus before jumping into the core preparation section for the CDS exam is very important, it helps you in the effective study in the limitation of the syllabus. Download the Syllabus PDF in which the curriculum is given in both Hindi as well as in English Medium for CDS 2023.

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