CDS 2025 Online Course: Comprehensive Preparation for Combined Defense Services Exam

Enroll in the comprehensive CDS 2025 online course to prepare effectively for the Combined Defense Services exam. Get expert guidance, study materials, and practice resources to enhance your chances of success.

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EaseToLearn is providing an exclusive interface for your COMBINED DEFENCE SERVICES EXAMINATION 2025. Get the latest updated CDS mock test series, CDS previous year question papers, CDS Question Bank, and CDS Study material. Sign up on the Easetolearn CDS Course to get the Latest CDS Smart Learning with Learning and Competitive Mode.

To Join the Online CDS Mock Test Series 2025:Click Here

SMART LEARNING OF CDS- In CDS smart learning you will get the Learning Mode and Competitive Mode.

CDS LEARNING MODE

It provides you with the facility to create multiple learning sessions on each CDS topic using randomization to identify knowledge gaps from a large knowledge pool.

Tony AI to help close identified knowledge gaps online using artificial intelligence during CDS Learning sessions. ETL help and Google help are also available.

CDS COMPETITIVE MODE

It provides you with the facility to create multiple practice sessions with time management and marks management on each CDS topic to ensure speed and accuracy.

Click Here For CDS Study Materials

Methodology to follow during CDS Smart Learning Session

  • Candidates can choose any CDS subject, topic, or keyword of their choice.
  • Try to answer all the CDS questions.
  • Do not guess. In case you don't know the answer click HELP
  • First, search for the answer from your books. Then ask Tony AI
  • If your doubts are still not cleared SKIP the CDS question. ETL Teachers will clear the doubts.
  • Each CDS learning session will have different set questions.
  • We recommend to move to competitive mode only if the CDS learning session progress bar is green.

GENERAL TOPICS

GENERAL KNOWLEDGE

GENERAL KNOWLEDGE - WORLD CONTEXT

ANIMALS

BOOKS AND AUTHORS

COUNTRIES

CURRENCIES

DANCES

DISASTERS

ENVIORNMENT

FAMOUS PLACES

FAMOUS PERSONALITIES

FIRST LARGEST LONGEST ETC IN WORLD

INVENTIONS AND DISCOVERIES

WORLD ORGANISATIONS

UNITED NATIONS

PRIZES AND AWARDS

GENERAL KNOWLEDGE - INDIAN CONTEXT

BOOKS AND AUTHORS (INDIA)

DANCES (I)

FAMOUS PLACES (I)

FAMOUS PERSONALITIES (I)

FIRST LARGEST LONGEST ETC IN INDIA

RELIGIONS (INDIA)

STATISTICAL DATA- INDIA

PRIZES AND AWARDS(I)

DEFENCE(I)

ABBREVIATIONS

DATES DAYS AND YEARS

GENERAL STUDIES

UNIVERSE

GENERAL GEOGRAPHY

GENERAL HISTORY

GENERAL HISTORY OF INDIA

GENERAL ECONOMICS STUDY

GENERAL POLITY

DEMOCRATIC POLITY (INDIA)

GENERAL SCIENCE

ELEMENTARY CHEMISTRY

MATTER NATURE AND BEHAVIOUR

ATOMS AND MOLECULES

MOLE CONCEPT

STRUCTURE OF ATOM

CHEMICAL SUBSTANCES NATURE AND BEHAVIOUR

ACIDS, BASES AND SALTS

METALS AND NON METALS

CARBON COMPOUNDS

ELEMENTARY PHYSICS

EFFECTS OF CURRENT

LIGHT

HUMAN EYE AND COLOURFUL WORLD

MAGNETIC EFFECT OF ELECTRIC CURRENT

ELEMENTARY BIOLOGY

BIOLOGICAL DIVERSITY

ORGANISATION IN LIVING WORLD

TISSUES, ORGANS, ORGAN SYSTEMS, ORGANISM

HEREDITY AND EVOLUTION

ENVIRONMENT AND ENVIRONMENTAL PROBLEMS

SCIENCE IN EVERYDAY LIFE

SPORTS AND RECREATION

CURRENT EVENTS

CURRENT EVENT 2024

CURRENT EVENTS JAN.MARCH 2024

CURRENT EVENTS APRIL - JUNE 2024

CURRENT EVENTS JULY-SEPT 2024

CURRENT EVENTS OCT-DEC 2024

ENGLISH

ENGLISH GRAMMAR

PARTS OF SPEECH

NOUNS

ADJECTIVES

PRONOUNS

VERBS

ADVERBS

ENGLISH VOCABULARY

SYNONYMS

ANTONYMS

ANALOGIES

ANALOGY TEST

COMPLETE ANALOGUS PAIR

CHOOSE ANALOGOUS PAIR

SIMPLE ANALOGY

DEFINITION USAGE

ENGLISH PROFICIENCY

IDIOMS AND PHRASES

ONE WORD SUBSITUTION

SENTENCE IMPROVEMENT

REARRANGEMENT OF WORDS IN SENTENCE

REARRANGEMENT OF SENTENCE IN PARAGRPH

ORDERING OF SENTENCES

PARAJUMBLES

IRRELEVANT SENTENCES

CLOZE TESTS

FILL IN THE BLANKS

FILL IN THE BLANKS(SINGLE WORD)

FILL IN THE BLANKS(PAIR OF WORDS)

ENGLISH USAGE ERRORS

COMMON ERRORS

COMMONLY CONFUSED PAIR OF WORDS

SPOTTING ERRORS

INAPPROPRIATE USAGE OF WORDS

SPELLING MISTAKES (ENGLISH USAGE)

ENGLISH COMPREHENSION

MATHEMATICS

ALGEBRA

NUMBER THEORY

THEORY OF EQUATIONS

COMPLEX NUMBERS AND QUADRATIC EQUATIONS

COMPLEX NUMBERS

DE MOIVRES THEOREM

QUADRATIC EQUATIONS

PERMUTATIONS AND COMBINATIONS

MATHEMATICAL INDUCTION AND BINOMIAL THEOREM

BINOMIAL THEOREM

SEQUENCE AND SERIES

MATRICES AND DETERMINANTS

MATRICES

DETERMINANTS

INVERSE OF MATRIX

TRIGONOMETRY

TRIGONOMETRIC RATIOS AND IDENTITIES

COMPOUND ANGLES

MULTIPLE AND SUBMULTIPLE ANGLES

TRANSFORMATION FORMULA

TRIGONOMETRIC EQUATIONS

INVERSE TRIGONOMETRIC (CIRCULAR) FUNCTIONS

PROPERTIES OF TRIANGLES

APPLICATIONS OF TRIGONOMETRY

HEIGHTS AND DISTANCES

PERIODICITY, VARIATION AND GRAPHS (TRG. FUNCTIONS)

SETS RELATIONS AND FUNCTIONS

SETS

RELATIONS AND FUNCTIONS

FUNCTIONS

CALCULUS

DIFFERENTIAL CALCULUS

LIMITS CONTINUITY AND DIFFERENTIABILITY

LIMITS

CONTINUITY AND DIFFERENTABILITY

CONTINUITY

DIFFERENTIABILITY

DIFFERENTIATION

FUMETMENTAL RULES FOR DIFFERENTIATION

PRODUCT RULE (DIFFERENTIATION)

QUOTIENT RULE (DIFFERENTIATION)

CHAIN RULE (DIFFERENTIATION)

SOME MORE METHODS OF DIFFERENTIATION

SUCESSIVE DIFFERENTIATION

PARTIAL DIFFERENTIATION

APPLICATION OF DERIVATIVES

RATE OF CHANGE

ERRORS AND APPROXIMATIONS

TANGENTS AND NORMALS

INCREASING AND DECREASING FUNCTIONS

MAXIMA AND MINIMA

INTEGRAL CALCULUS

INTEGRATION (INDEFINITE INTEGRALS)

DEFINITE INTEGRALS

AREA OF CURVES

SOLIDS OF REVOLUTIONS

DIFFERENTIAL EQUATIONS AND APPLICATIONS

COORDINATE GEOMETRY AND VECTORS

TWO DIMENSIONAL COORDINATE GEOMETTRY

CARTESIAN PLANE AND LINES

STRAIGHT LINES

PAIR OF STRAIGHT LINES

CIRCLES

CONICS

PARABOLA

ELLIPSE

HYPERBOLA

THREE DIMENSIONAL COORDINATE GEOMETRY

SPHERE(3D GEOMETRY)

VECTORS

VECTOR PRODUCT OF VECTORS

TRIPLE PRODUCT OF VECTORS

STATISTICS AND PROBABILITY

STATISTICS

COLLECTION OF DATA

SAMPLING AND SAMPLE DESIGNS

MEASURES OF CENTRAL TENDENCY AND DISPERSON

CORRELATION AND REGRESSION ANALYSIS

INDEX NUMBERS

PROBABILITY AND EXPECTED VALUE

PROBABLITY

RANDOM VARIABLE AND PROBABILITY DISTRIBUTION

EXPECTED VALUE OF RANDOM VARIABLE

THEORETICAL DISTRIBUTION

BINOMIAL DISTRIBUTION

POISSON DISTRIBUTION

NORMAL DISTRIBUTION

MECHANICS FOR MATHS

STATICS

DYNAMICS

GEOGRAPHY

PHYSICAL GEOGRAPHY

HUMAN GEOGRAPHY

GEOGRAPHY OF THE WORLD

GEOGRAPHY OF INDIA

PHYSICAL GEOGRAPHY (INDIA)

ECONOMIC GEOGRAPHY (INDIA)

POPULATION (INDIA)

POLITICAL GEOGRAPHY (INDIA)

HISTORY

INDIAN HISTORY

ANCIENT INDIA

MEDIEVAL INDIA

MODERN INDIA