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[PDF*] CDS Exam Study Material New Syllabus, Exam Pattern, Practice Set, Papers | Free Download

[PDF*] CDS Exam Study Material New Syllabus, Exam Pattern, Practice Set, Papers | Free Download

Free Exam preparation of Combined Defence Services (CDS) Complete Study material, Syllabyus, old paper and Book Free pdf download.
CDS Exam Study Material pdf download

New Exam Study Material of CDS Exam 2020-21 | New Sylllabus and Exam Papers Pdf download of CDS Exam 2020

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Combined Defence Services

The Union Public Service Commission (UPSC) conducts "Combined Defence Services" (CDS) Examination twice in 1 year for recruiting candidates for the Indian Military Academy, Officers Training Academy, Indian Naval Academy and Indian Air Force Academy. New Notification is usually released in the months of October/November and June/July, and the examination is generally conducted in February and November respectively.

Latest CDS Exam Syllabus and Exam pattern 2020 pdf download

  • CDS Syllabus- 2020
  • Mode of exam-    Offline
  • Number of Sections- Indian Military Academy [IMA], Indian Naval Academy [INA] and Air Force Academy [AFA]– 3 Officers’ Training Academy [OTA] – 2
  • Total marks of the Exam-    IMA, INA and AFA – 300 OTA - 200
  • Nature of questions- Objective type
  • Language of question paper- Hindi and English
  • Duration of the Exam- 2 hours for each section of Exam

CDS Exam Pattern for IMA, INA, AFA

Subject    Duration-    Maximum marks

  • English-    2 hours    100
  • General Knowledge-    2 hours    100
  • Elementary Mathematics-    2 hours    100
  • CDS Exam Pattern for OTA
  • Subject    Duration    Maximum marks
  • English-    2 hours-    100
  • General Knowledge-    2 hours    100
  • CDS Syllabus 2020: Marking Scheme

Is there Negative Marking in CDS Exam 2020-21

We want to inform you that Negative marking is applicable for every wrong marked answer. In CDS Combined Defense Services paper, each question carries four options and out of which only one option is correct. For Every incorrect answer, 1/3 of the marks will be deducted. More than 1 option marked is treated as incorrect. However, if your a question is left unanswered there will be no negative marking.

CDS Important Instructions



  • In Exam, Write only in Black ballpoint pen, your Centre and subject followed by the CDS Combined Defence Services test booklet series, subject code and the exam roll number at the appropriate space provided on the answersheet at the top.
  • Candidates should Encode their CDS 2020 booklet series (A, B, C, or D as the case may be), subject code and roll number in the circles provided for the purpose in the answer sheet.
  • If CDS Exam Quesiton booklet series is not printed on the test booklet or answer sheet is un-numbered then candidates should report immediately to the invigilator and get the test booklet or answer sheet replaced.
  • CDS Candidates should note that any omission, mistakes, discrepancy in encoding/filling of details in the CDS OMR answersheet, especially with regard to the Roll No. and Test Booklet Series Code, will render the answer sheet liable for rejection of Exam.
  • Immediately after the commencement of the CDS Combined Defence Services please check that the test booklet supplied to you does not have any unprinted or torn or missing pages or items etc., if yes, get it replaced by a test booklet of the same series and subject.
  • Remember, Don’t write your name or anything other than the specific items of information asked for, on the CDS answer sheet,test booklet and sheet for rough work.
  • Please do not fold or damage or put any extraneous marking over the CDS Answer Sheet. Don’t write anything on the reverse of the answer sheet.
  • The Questions level of Mathematics is till 10th standard only.

CDS Syllabus: Subject-Wise Syllabus

Most Important Topics of English for CDS written Exam 2020-21   

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

Important Topics of General Awareness (GK) for UPSC CDS Exam

  • Economics
  • Physics
  • Current Affairs
  • Politics
  • Chemistry
  • Sociology
  • History
  • Defence related Award
  • Geography
  • Environment
  • Sport
  • Biology
  • Cultural
  • Book
  • Statement
  • true/false

Elementary Mathematics Algebra for CDS Exam 2020-21

  • Basic Operations
  • simple factors
  • Remainder Theorem
  • H.C.F.
  • L.C.M.
  • Theory of polynomials
  • solutions of quadratic equations
  • Practical problems leading to 2 simultaneous linear equations or inequations in 2 variables or quadratic equations in 1 variable and their solutions
  • Set language and set notation
  • Rational expressions and conditional identities
  • Laws of indices

Some Important Topics of Math For CDS Written Exam

  • Arithematic   
  • Natural numbers, Integers, Rational & Real number
  • Addition, division, Square roots, Decimal, fractions, substraction, multiplication
  • 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
  • Trigonometry
  • Simple trigonometric identities
  • Use of trigonometric tables
  • Simple cases of heights and distances
  • Geometry   
  • Lines and angles
  • Plane and plane figures
  • Theorems on Properties of angles at a point
  • Parallel lines
  • Sides and angles of a triangle
  • Congruence 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
  • Mensuration   
  • 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
  • Statistics   
  • Collection and tabulation of statistical data
  • Graphical representation frequency polygons
  • histograms
  • bar charts
  • pie charts etc
  • Measures of central tendency

Source: Read Source (Internet)

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