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CDS Syllabus 2026, Check Detailed Topics of Written Exam

Anshika

Mar 25, 2026

CDS 2026 syllabus covers three major subjects, English, General Knowledge, and Elementary Mathematics designed to assess a candidate’s aptitude for defence training. For admission to the Indian Military Academy (IMA), Indian Naval Academy (INA), and Air Force Academy (AFA), all three subjects are included in the written exam. However, for the Officers’ Training Academy (OTA), the syllabus is limited to English and General Knowledge, as Mathematics is not part of the OTA exam pattern. The syllabus evaluates grammar and comprehension skills, current affairs awareness, defence-related knowledge, scientific understanding, and basic mathematical concepts up to Class 10 level. Candidates should practice previous year question papers and refer to CDS Study Material while preparation.

CDS English Syllabus 2026

Following are the topics from which the questions are asked in this section

  • Basic Grammar
  • Idioms & Phrases
  • Synonyms and Antonyms
  • Reading Comprehension Solving
  • Substitution of Words
  • Error Spotting
  • Para Jumbles
  • Sentence Improvement or Sentence Correction
  • Ordering of Sentences

CDS General Knowledge Syllabus 2026

Following are the topics from which the questions are asked in this section. You should refer to detailed CDS GK Syllabus for effective preparation. 

  • Economics
  • Physics
  • Current Affairs
  • Political Science
  • Chemistry
  • Sociology
  • Indian History
  • Defense-related Award
  • Geography
  • Environment
  • Sport
  • Biology
  • Cultural
  • Books
  • Statement
  • True/False

CDS Elementary Mathematics Syllabus 2026

While preparing, ensure to practice each topic and sub-topic pf CDS Maths Syllabus thoroughly. You also need to remember all the formulas. 

Subject Topics
Arithmetic
  • Number System: Natural numbers, Rational & Real numbers, Integers
  • Fundamental operation: Subtraction, multiplication, addition, division, Square roots, Decimal fractions
  • Time and work
  • Percentage
  • Time and Distance
  • Simple and Compound interest
  • Ratio and Proportion
  • Profit and Loss
  • 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
  • Laws of Logarithms
Algebra
  • Basic Operations
  • Simple Factors
  • H.C.F. and L.C.M.
  • Remainder Theorem
  • Theory of Polynomials
  • Solutions of quadratic equations, the relation between its roots & coefficients (Only real roots to be considered)
  • Linear inequalities in two variables and their solutions
  • Linear equations in two unknowns—Analytical & Graphical Solutions
  • Practical problems leading to two simultaneous linear equations or inequalities in two variables or quadratic equations in one variable & their solutions
  • Rational expressions and conditional identities
  • Set Language & Set Notation
  • Laws of Indices.
Trigonometry
  • 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.
Geometry
  • 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
Mensuration
  • 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
Statistics
  • Collection and tabulation of statistical data
  • Graphical representation frequency: Polygons, Histograms, Bar charts, Pie charts
  • Measures of Central Tendency

CDS Topic-wise Weightage 2026

Some topics from each subject carry more marks in the exam than others. Check those topics below. 

CDS Topic-wise Distribution for English

Topic Total Questions
Cloze Test 20
Reading Comprehension 22
Synonyms/ Antonyms 15
One Word Substitution 5
Para Jumble 10
Sentence-Jumble 7
Error Detection 20
Sentence Improvement 20

CDS Topic-wise Distribution for General Knowledge

Topic Total Questions
History 19
Science 27
Polity 20
Ecology 6
Military Wings/ Forces 15
Economy/Trade 11
Geography 22

CDS Topic-wise Distribution for Mathematics

Topic Number of Questions
Mensuration 15
Algebra 8
SI/ CI 5
Speed and Distance 6
Number System 18
Mixture -
Percentage 2
Profit/Loss 1
Geometry 20
Time and Work 3
Trigonometry 14
Mean-Median-Mode 4
Clock 2

Candidates should strictly follow CDS syllabus, which ensures that your preparation stays focused and aligned with what UPSC actually tests. It helps you avoid wasting time on irrelevant topics and builds a strong conceptual base. Alongside this, regularly practicing previous year papers familiarizes you with the exam pattern, difficulty level, and recurring question types.

CDS Syllabus 2026 FAQs

Ques: What is CDS 2026 syllabus?

Ans: CDS syllabus covers various subjects such as mathematics, English, general knowledge, and Current Affairs.

Ques: What is CDS OTA syllabus?

Ans: CDS OTA syllabus is divided into two sections: General English and General Knowledge. Grammar, Idioms and Phrases, Comprehension, Synonyms, and Antonyms are some of the topics covered in English. Current events, History, Political Science, General Science, Economics, and Geography are all topics covered in General knowledge.

Ques: Is there a difference between CDS IMA Syllabus and CDS OTA Syllabus?

Ans: No, CDS IMA Syllabus differs slightly from CDS OTA Syllabus. The OTA exam does not include any questions from the Mathematics section.

Ques: How many papers are there in CDS?

Ans: There are three papers in CDS namely: English, General Knowledge, and Mathematics.

Ques: What are the best resources for preparing for CDS 2026?

Ans: Candidates can use various resources such as books, previous year question papers, mock tests, online study material, and coaching institutes to prepare for CDS 2026.

*The article might have information for the previous academic years, please refer the official website of the exam.
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