Download UPSC CDS I Exam Syllabus 2020 Pdf - Check Exam Pattern @

Jayasree | Oct 30, 2020


Name of the Board
Union Public Service Commission
Name of the Post
Combined Defense Services Examination (I)
Total No. of Vacancies
Mode of Application
Selection Process
Written Examination
Job Category
Central Govt Jobs
Official Site

UPSC CDS I Syllabus 2020-21

Union Public Service Commission has released for engaging the Combined Defense Services Examination (I) in different departments of ARMED FORCES. The applied contenders must check the syllabus information which is key to the preparation of the examination. Check the details of the exam pattern from the official website and follow the subject wise topics accordingly. Check the information related to the UPSC CDS Exam Syllabus details from the following sections for more clarity on preparation.

UPSC CDA 1 Exam Pattern

The exam structure for INA, IMA, AFA, and OTA s as follows

Name of the SubjectNo of QuestionsMarksDuration
English1201002 Hrs
General Knowledge 
1201002 Hrs
Elementary Mathematics 
1001002 Hrs
Total3403006 Hrs
Name of the SubjectNo of QuestionsMarksDuration
English1201002 Hrs
General Knowledge 
1201002 Hrs
Total2402004 Hrs

UPSC CDS 1 SSB Interview

The SSB interview is one of the selection criteria for the selection of CDS 1 vacancies. Applicants have to clear in both stages.

SSB InterviewOTA (Stage 1)Interview (Stage 2)

Download UPSC CDS 1 Syllabus Pdf 2020


  • Transformation of Sentences
  • Ordering of Sentences
  • Idioms & Phrases
  • Reported Speech
  • Spelling Mistakes
  • Unseen Passage
  • Spotting Errors
  • Fillers
  • Parts of Speech
  • Sentence Rearrangement
  • Synonyms & Antonyms

General Knowledge

  • Geography
  • Social Studies
  • Indian History and Geography
  • History
  • Current Events & Affairs
  • General Science

Elementary Mathematics: 


  • Decimal fractions
  • Square roots
  • Unitary method
  • Time and work
  • Number System
  • Euclidean algorithm
  • Ratio and proportion
  • Simple and Compound interest
  • Division algorithm
  • Prime and composite numbers
  • Logarithms to base 10, Laws of logarithms
  • Tests of divisibility
  • Profit and loss
  • Multiples and factors
  • Time and distance
  • H.C.F. and L.C.M
  • Percentage


  • The relation between its roots and coefficients
  • Linear equations
  • H.C.F., L.C.M.
  • Solutions of quadratic equations
  • Theory of polynomials
  • Rational expressions
  • Set language and set notation
  • Remainder Theorem
  • Laws of indices


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


  • Lines and angles
  • Plane and plane figures
  • Theorems


  • Squares
  • Rectangles
  • Parallelograms
  • Triangle
  • Circle
  • Areas of figures
  • Surface area and volume of cuboids
  • The volume of right circular cones & cylinders
  • Surface area and volume of spheres

  • Collection & tabulation of statistical data
  • Graphical representation

UPC CDA 1 Selection Process

The selection of the UPSC CDS 1 examination will be based on the written test, Physical standards, and SSB interview which is conducted by the concerned recruiting authority.

  • Written Test
  • Physical Standards
  • SSB Interview

Important Links

Other Important Links

Frequently Asked Questions

Q. What is the selection criteria for UPSC CDS Exam Syllabus 2020?

Ans. The selection criteria for UPSC CDS Exam Syllabus 2020 is a written test, physical standards, and SSB interview.

Q. What is exam date for UPSC CDS 1?

Ans. The exam date for UPSC CDS 1 is on 8th November 2020.

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