CDS · Syllabus
CDS Syllabus 2026 — every subject & topic
The complete Combined Defence Services Examination syllabus: 3 subjects, 82 topics. Every topic links to free study notes, practice questions and topic-wise quizzes.
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- Spotting Errors
- Sentence Improvement
- Ordering of Sentences / Para Jumbles
- Sentence Completion / Fill in the Blanks
- Synonyms
- Antonyms
- Idioms and Phrases
- Cloze Test / Comprehension
- Reading Comprehension
- Active and Passive Voice
- Direct and Indirect Speech
- Transformation of Sentences
- Spelling Check
- One-Word Substitution
General Knowledge
- History
Ancient India · Medieval India · Modern India / Freedom Struggle · World History
- Geography
Physical Geography · Indian Geography · World Geography · International Boundaries
- Indian Polity and Constitution
Preamble, Fundamental Rights and Duties · Parliament and Executive · Judiciary · Constitutional Amendments and Defence Provisions
- Economics
GDP, GNP, NNP and National Income · Planning and NITI Aayog · Monetary and Fiscal Policy · Economic Indicators
- General Science
Physics · Chemistry · Biology · Defence-related Science
- Current Affairs
National Events · International Events · Defence and Security · Sports, Awards and Books
- Static GK
Elementary Mathematics
- Arithmetic
Number System – Natural / Integers / Rational / Real · Unitary Method · Profit and Loss · Ratio and Proportion · Percentage · Average · Elementary Number Theory · Logarithms
- Algebra
Basic Operations · Polynomials and Factorisation · Theory of Polynomials · Simultaneous Linear Equations · Linear Inequalities · Set Theory · Laws of Indices
- Trigonometry
Sine, Cosine, Tangent of Angles 0°–90° · Simple Trigonometric Identities · Use of Trigonometric Tables · Heights and Distances
- Geometry
Lines and Angles · Plane and Plane Figures · Properties of Triangles · Parallelograms and Rectangles · Circles and Tangents · Loci
- Mensuration
Areas of Squares, Rectangles, Parallelograms, Triangles, Circles · Surface Area and Volume · Areas and Volumes of Combined Figures
- Statistics
Collection and Tabulation of Data · Graphical Representation · Measures of Central Tendency
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