CDS (Combined Defence Services)

​The "Combined Defence Services" (CDS) Examination is conducted twice a year by the Union Public Service Commission for recruitment into the Indian Military Academy, Officers Training Academy, Indian Naval Academy, and Indian Air Force Academy.
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).
Age Limit
Indian Military Academy- 19–24years
Air Force Academy- 19–24 years
Naval Academy- 19–24 years
Officers’ Training Academy-19–25 years
Scheme of Examination
Indian Military Academy / Air Force Academy / Naval Academy
All the papers are of objective type.
Subject Marks
English- 100
General Knowledge- 100
Elementary Math's- 100
Total= 300
Officers' Training Academy
Each paper contains objective type questions.
SubjectMarks
English- 100
General Knowledge- 100
Total= 200
Exam Pattern:
PAPER - I (ENGLISH)
1. Synonyms
2. Antonyms
3. Ordering of Words
4. Ordering of Sentences
5. Comprehension
6. Spotting Errors
PAPER-II (GENERAL KNOWLEDGE)
1. History
2. Civics
3. Geography
4. Physics
5. Chemistry
6. Biology
7. Current Affairs
8. Economics
PAPER -III (ELEMENTARY MATHS)
1. Algebra
2. Trigonometry
3. Statistics
4. Arithmetic
5. Mensuration
6. Geometry