- 03 Sep
UPSC Combined Defence Services Examination (CDS)
The Notification for the examination is usually released in the months of October and June, and the examinations are conducted in February and November respectively. Only unmarried graduates are eligible to sit for the exam. Successful candidates are admitted into the respective Academies after an interview conducted by the Services Selection Board (SSB).
Nationality
Check nationality for the CDS exam mentioned below
- The candidate must be a citizen of India
- A subject of Nepal of Bhutan
- A Tibetan refugee who came to India before 1st January 1962, to forever live comfortably in India or
- An individual initially Indian who has relocated from Pakistan, Burma, Sri Lanka, and East African nations Kenya, Uganda, United Republic of Tanzania, Zambia, Malawi, Zaire, and Ethiopia or Vietnam with the expectation of forever living in comfortable India.
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Educational Qualification
CDS Exam Educational Qualifications is given below.
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For I.M.A. and Officers’ Training Academy |
Degree from a recognized University or equivalent |
For Indian Naval Academy |
Degree in Engineering from a recognized University or equivalent |
For Air Force Academy |
Degree of a recognized University (with Physics and Mathematics at 10+2 level) or Bachelor of Engineering |
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Age Limit
Indian Military Academy |
19–24 years |
Air Force Academy |
19–24 years |
Naval Academy |
19–24 years |
Officers Training Academy |
19–25 years |
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Physical Standards
Candidates must be physically fit according to physical standards criteria given in the official advertisement.
Union Public Service Commission has set the eligibility criteria For Combined Defence Services. Before applying to the CDS exam Candidate must check the eligibility criteria. The basic physical standard for a candidate is:
- The candidate should be physically as well as mentally fit.
- Permanent tattoos on the body are prohibited.
- No hernia anywhere on the body.
- No hearing impairment, deformities/disabilities in-ears vestibule-cochlear system.
- There is no active congenital venereal disease.
Here are the requirements for the Height and Weight standards to qualify for CDS exam:
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Height and Weight Standards (Males) |
||||
Height in Centimetres (Without shoes) |
Weight in Kgs. |
|||
 |
18 years |
20 years |
22 years |
24 years |
152 |
44 |
46 |
47 |
48 |
155 |
46 |
48 |
49 |
50 |
157 |
47 |
49 |
50 |
51 |
160 |
48 |
50 |
51 |
52 |
162 |
50 |
52 |
53 |
54 |
165 |
52 |
53 |
55 |
56 |
168 |
53 |
55 |
57 |
58 |
170 |
55 |
57 |
58 |
59 |
173 |
57 |
59 |
60 |
61 |
175 |
59 |
61 |
62 |
62 |
178 |
61 |
62 |
63 |
64 |
180 |
63 |
64 |
65 |
66 |
183 |
65 |
67 |
67 |
68 |
185 |
67 |
69 |
70 |
71 |
188 |
70 |
71 |
72 |
74 |
190 |
72 |
73 |
74 |
76 |
193 |
74 |
76 |
77 |
78 |
195 |
77 |
78 |
79 |
81 |
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CDS Exam Pattern
Stages of exam |
Written exam and SSB Interview |
Mode of exam |
Offline / Pen and paper based |
Subjects |
1- English 120 questions 2- General Knowledge 120 questions 3- Elementary Mathematics 100 questions |
Exam duration |
2 hours for each paper |
Number of questions |
340 MCQs for – IMA, INA and AFA 240 MCQs for – OTA |
Language of paper |
English & Hindi |
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Indian Military Academy / Air Force Academy / Naval Academy
All the papers are of objective type.
Subject |
Marks |
English |
100 |
General Knowledge |
100 |
Elementary maths |
100 |
Total |
300 |
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Officers' Training Academy
Each paper contains objective type questions.
Subject |
Marks |
English |
100 |
General Knowledge |
100 |
Total |
200 |
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CDS Marking Scheme
It is important to know the CDS marking scheme for candidates to devise an effective exam-taking strategy. The CDS marking scheme as prescribed by UPSC is as follows:
- 1 mark is awarded for each correct answer
- 0.33 marks are deducted for each wrong attempt
- Questions left unanswered are not covered under negative marking
- If two answers are marked for one question. It will be considered wrong and negative marks will be deducted.Â
Intelligence and Personality Test
The SSB interview process consists of a two-stage Selection process – stage I and stage II. Only those candidates who successfully clear the stage I SSB interview are permitted to appear for stage II.
(a) Stage I comprises Officer Intelligence Rating (OIR) tests are Picture Perception* Description Test (PP&DT). The candidates will be shortlisted based on the combination of performance in the OIR Test and PP&DT.
(b) Stage II Comprises Interview, Group Testing Officer Tasks, Psychology Tests, and the Conference. These tests are conducted over 4 days. The details of these tests are given on the Indian Army career portal.
The personality of a candidate is assessed by three different assessors viz. The Interviewing Officer (IO), Group Testing Officer (GTO), and the Psychologist. There is no separate weightage for each test. The marks are allotted by assessors only after taking into consideration the performance of the candidate holistically in all the tests.
Test/ Interview by Air Force Selection Board
All candidates who apply for the Air Force through more than one source will be tested/interviewed at the Air Force Selection Boards only once for Air Force. Common candidates who fail in Computer Pilot Selection System (CPSS) and/ or Pilot Aptitude Battery tests as an NCC or Airmen candidate will be called again for OLQ testing for Army/Navy/OTS only if it is found that they have applied through CDS Exam.
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CDS 2021 Highlights
Name of exam |
Combined Defence Services Examination |
Conducted by |
Union Public Service Commission (UPSC)Â |
Exam level |
National |
Exam frequency |
Twice a year |
Exam mode |
Online |
Exam mode |
Two hours |
Language of question paper |
English and Hindi |
Exam Fees |
Rs 200 |
Exam purpose |
To select candidates as Commissioned Officers in Indian Army, Navy and Air Force |
CDS 1 vacancies |
345 |
No of test cities |
41 |
Official website |
upsc.gov.in |
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CDS I 2021 Vacancy
CDS 1 2021 Total number of vacancies are given below.
Academy |
Total Vacancies |
IMA |
100 |
AFA |
32 |
INA |
26 |
OTA (Men) |
170 |
OTA (Women) |
17 |
Total |
345 |
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CDS Syllabus
syllabus of CDS is divided into three sections-
- English
- General Knowledge
- Elementary Mathematics
CDS Syllabus – Elementary Mathematics |
|
Algebra |
Basic Operations, Simple factors, Remainder Theorem, HCF/LCM, Theory of polynomials, 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 |
Arithmetic |
Number System: Natural numbers, Integers, Rational and Real numbers. Fundamental operations: addition, substraction, multiplication, division, Square roots, Decimal fractions Unitary method, Time and Distance, Time and work, Percentages, 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 and use of logarithmic tables |
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 and Loci |
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 |
Statistics |
Collection and tabulation of statistical data, Graphical representation frequency polygons, Histograms, Bar charts, Pie charts, etc., Measures of central tendency |
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 |
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CDS Syllabus – English |
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CDS Syllabus – General Knowledge |
Current Awareness, Economics, Physics, Biology, Sociology, Chemistry, Award and honours, books and authors, History, Politics, Geography, Environment, Defence, Sport and Culture. |
CDS Admit Card 2021
The steps to download the admit card of CDS is given below.
- Visit the official websiteÂ
- Click the admit card link on the home page of UPSCÂ
- Download it either by registration number or roll number
- CDS admit card appears on the screen
- Download the admit card and take its printout
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UPSC CDSÂ Result 2021
UPSC releases Conbined Defence Services result through online mode on the official website. Candidates who want to download CDS Result PDF from the official website can follow the steps given below:
- – 1st Step: Go to the official website of UPSC – upsc.gov.in.
- – 2nd Step: Click on the tab ‘Examination’.
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UPSC CDS Cut Off
UPSC CDS 1 Exam 2021 Expected Cut-offs
Name of the service |
Cut-offs |
AFA |
135 |
IMA |
121 |
INA |
112 |
OTA (Female) |
84 |
OTA (Male) |
84 |
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UPSC CDS Previous Year Cut Off 2019
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Academy course |
Written exam |
Final Exam |
IMAÂ |
116 |
242 |
OTA (Male) |
78 |
160 |
OTA (Female) |
78 |
162 |
INA |
105 |
233 |
AFA |
129Â |
264 |
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UPSC CDS-I Previous year cutoff Marks 2018
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Academy course |
Written exam |
Final Exam |
IMAÂ |
118 |
240 |
OTA (Male) |
69 |
154 |
OTA (Female) |
69 |
150 |
INA |
138 |
278 |
AFA |
98Â |
225 |
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UPSC CDS-II Previous year cutoff Marks 2017
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Academy course |
Written exam (minimum qualifying marks in each subjects)Â |
Final Exam (marks of last recommended candidates) |
IMAÂ |
125 |
248 |
OTA (Male) |
82 |
163 |
OTA (Female) |
82 |
164 |
INA |
144 |
268 |
AFA |
118 |
241 |
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 CDS Preparation Tips 2021
- Know the syllabus and exam pattern
- Previous Year Papers and Mocks
- Keep the fundamentals clear
- Focus on important topics
- Attempt easier questions first
- Make a proper timetable
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