CDS Exam Pattern and Syllabus 2021, Combined Defense Services Pdf Download

Combined Defense Services 2 (CDS Exam Pattern and Syllabus) 2021 – As per official updates of cds exam, here we are providing a written exam syllabus and exam pattern for combined defense services. Most of the updates are as per the CDs exam 2021 official notification. Candidates, please note that the date of CDs 2 notification and Application date start will be from September 2021. You can also download the syllabus pdf.

CDS Exam Pattern and Syllabus 2021

Combined defense services exam pattern and syllabus are the most important topics for all the candidates who are preparing for the CDS exam. We are covering all the topics on the CDS exam 2021. The date of notification and application form is announced for CDS 2 and you can prepare for the written exam accordingly. But for that, you will need a written exam syllabus and its pattern.

If you are not sure about combined defense services exam eligibility criteria then you should check to make sure that you are fulfilling the criteria. There is no point of going for syllabus preparation if you are not eligible.

CDS exam is being conducted by upsc (union public service commission) twice in year, every year to recruit candidates for different academies. Main Academy coming under cds exam are Indian Military Academy(IMA), officers Training Academy(OTA), Indian Naval Academy(INA) and Indian Air Force Academy (IAFA).

Organization Name: Union Public Service Commission

Exam Time: Twice in Year (CDS 1 & CDS 2)

Official Website:

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CDS Exam pattern 2021

Written exam pattern for cds exam is varying as per the academy. For Indian Military Academy / Air Force Academy / Indian Naval Academy exam pattern is same. but for Officers’ Training Academy exam pattern is different than others. hence we will discuss IMA/IAFA/INA exam pattern in one table and OTA pattern in other table.

Type of paper: Written Exam

Subjective/Objective: Objective (Multiple Choice Questions)

Negative Marking: Yes

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Indian Military Academy / Air Force Academy / Indian Naval Academy Exam Pattern

Subject NameMax Marks
General Knowledge100
Elementary Mathematics100

Note: Level of elementary mathematics will be of 10th level exam.

Officers Training Academy Exam Pattern

Subject NameMax Marks
General Knowledge100

Note: The question papers of General Knowledge and Elementary Mathematics will be available in both Hindi and English language. All the candidates please note that you are not allowed to bring calculator in exam hall.

CDS Exam Syllabus

Now lets discuss the exam syllabus in detail. if you talk about the standard of cds exam paper. Elementary Mathematics will be of 10th (Matriculation) level standard. Other two paper (English and General Knnowledge) will have good level to crack. Mathematics is easy to solve but timing will play a major role.

English Syllabus:

English syllabus is always kept to test candidates ability to understand English language. reason being English is common mode of communication for all of us. Below are the English Syllabus topics,

  • Synonyms
  • Antonyms
  • Reading Comprehension
  • Para Jumbles
  • Error Spotting
  • Jumbled Sentences
  • Sentence Correction
  • Fill in the Blanks

You can practice these topics quiz and question paper on our android app or on website itself.

General Awareness(GK) Syllabus:

Gk paper is being kept to test your knowledge of daily basis activity. It also test that how much you are engaged in day-to-day happenings. GK syllabus topics are,

  • Knowledge of current events and of such matters of everyday observation.
  • History of India
  • Geography of a nature

Elementary Mathematics Syllabus

now lets discuss the mathematics syllabus. Please note that the level of standard for mathematics will be of 10th level exam so don’t prepare too hard questions. Only basic will help you in pass the exam.


Number System—Natural numbers, Integers, Rational and Real numbers. Fundamental operations, addition, subtraction, multiplication, division, Square roots, Decimal fractions. Unitary method, time and distance, time and work, percentages, applications to simple and compound interest, profit and loss, ratio and proportion, 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. H.C.F. and L.C.M. Euclidean algorithm. Logarithms to base 10, laws of logarithms, use of logarithmic tables.


Basic Operations, simple factors, Remainder Theorem, H.C.F., L.C.M., Theory of polynomials, solutions of quadratic equations, relation between its roots and coefficients (Only real roots to be considered).

Simultaneous linear equations in two unknowns—analytical and graphical solutions. Simultaneous linear inequations in two variables and their solutions.

Practical problems leading to two simultaneous linear equations or inequations in two variables or quadratic equations in one variable & their solutions.

Set language and set notation, Rational expressions and conditional identities, 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.

Lines and angles, Plane and plane figures, Theorems on

  • Properties of angles at a point,
  • Parallel lines,
  • Sides and angles of a triangle,
  • Congruency of triangles,
  • Similar triangles,
  • Concurrence of medians and altitudes,
  • Properties of angles, sides, and diagonals of a parallelogram, rectangle and square,
  • Circles and its properties including tangents and normals,
  • Loci.

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

Download CDS Exam Pattern and Syllabus 2021 Pdf

You can download the exam pattern and syllabus and pdf file for further reference. Below we are giving a download link to download this article in a pdf file. CDs syllabus in pdf file helps if you want to refer it offline anytime while studying. so please download and save it on your phone or laptop. You can also print the pdf file.

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Thanks guys for reading CDS Exam Pattern and Syllabus 2021.  You can comment for any help on CDS exam.

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