

Combined Defence Service Exam : CDS 


A. Scheme of Examination



1. The Competitive examination comprises:
(a) Written examination.
(b) Interview for intelligence and personality test (vide
Part 'B' of this Appendix) of such candidates as may be called for interview at
one of the Services Selection Centres.
2. The subjects of the written examination, the
time allowed and the maximum marks allotted to each subject will be as follows:
(a) For Admission to Indian Military Academy, Naval
Academy and Air Force Academy
Subject

Duration

Maximum Marks

1. English

2 Hours

100

2. General Knowledge

2 Hours

100

3. Elementary Mathematics

2 Hours

100

(b) For Admission to Officers' Training Academy
Subject

Duration

Maximum Marks

1. English

2 Hrs

100

2. General Knowledge

2 Hrs.

100

The maximum marks allotted to the written examination and to the interviews will
be equal for each course i.e. the maximum marks allotted to the written
examination and to the interviews will be 300,300,300 and 200 each for admission
to the Indian Military Academy, Naval Academy, Air Force Academy and Officers'
Training Academy respectively.
3. The papers in all the subjects will consist of objective type questions only.
The question papers (test booklets) of general knowledge and elementary
mathematics will be set in bilingually in Hindi as well as English .
4. In the question papers, wherever necessary, questions involving the metric
system of Weights and Measures only will be set.
5. Candidates must write the papers in their own hand. In no circumstances will
they be allowed the help of a scribe to write answers for them.
6. The Commission have discretion to fix qualifying marks in any or all the
subjects of the examination.
7. The candidates are not permitted to use calculator for answering objective
type papers (Test Booklets). They should not therefore, bring the same inside
the Examination Hall.
8. Standard and Syllabus of the Examination 





Standard 


The standard of the papers in Elementary Mathematics will be of Matriculation
level. The standard of papers in other subjects will approximately be such as
may be expected of a graduate of an Indian University.
Syllabus
English (Code No. 01)
The question paper will be designed to test the candidates' understanding of
English and workmanlike use of words.
General Knowledge (Code No. 02)
General Knowledge including knowledge of current events and of such
matters of everyday observation and experience in their scientific aspects as
may be expected of an educated person who has not made a special study of any
scientific subject. The paper will also include questions on History of India
and Geography of a nature which candidate should be able to answer without
special study.
Elementary Mathematics (Code No. 03)
Arithmetic : Number SystemNatural numbers, Integers, Rational and Real
numbers. Fundamental operations addition, subtraction, multiplication, division,
Square roots, Decimal fractions. Unitary methodtime 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.
Algebra
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 unknownsanalytical and graphical solutions. Simultaneous linear
equations 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.
Trigonometry
Sine x, cosine x, Tangent x when 00 < x < 90
Values of sin x, cos x and tan x, for x = 00, 30, 45, 60 and 90
Simple trigonometric identities. Use of trigonometric tables. simple cases of
heights and distances.
Geometry
Lines and angles, Plane and plane figures, Theorems on
(i) Properties of angles at a point
(ii) Parallel lines,
(iii) Sides and angles of a triangle,
(iv) Congruency of triangles,
(v) Similar triangles,
(vi) Concurrence of medians and altitudes,
(vii) Properties of angles, sides and diagonals of a parallelogram, rectangle
and square
(viii) Circles and its properties including tangents and normals,
(ix) 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. 





