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ToggleCDS Exam: Eligibility, Pattern, and Preparation
The CDS Exam (Combined Defence Services Examination) is conducted by the Union Public Service Commission (UPSC). It is one of the most prestigious defence examinations in India. Through the CDS Exam, candidates can become officers in the Indian Army, Indian Navy, and Indian Air Force.
Every year, thousands of aspirants appear for the CDS Exam. The exam is conducted twice a year, usually in April and September. Candidates who qualify begin officer training at prestigious academies such as IMA, INA, AFA, and OTA.
CDS Exam Eligibility Criteria
Candidates must meet specific eligibility requirements to appear for the CDS Exam. First, applicants must hold a degree from a recognised university.
For Indian Military Academy (IMA) and Officers Training Academy (OTA), candidates can have a degree in any discipline. However, for the Indian Naval Academy (INA), an engineering degree is required. Similarly, for the Air Force Academy (AFA), candidates must have studied Physics and Mathematics in Class 12 or hold an engineering degree.
Age limits also vary by academy. Generally, candidates must be between 19 and 25 years of age.
CDS Exam Pattern
The CDS Exam pattern consists of three written papers. These include English, General Knowledge, and Elementary Mathematics.
Each paper carries 100 marks and lasts two hours. Therefore, the total marks for the written CDS Exam are 300. However, candidates applying for OTA only write English and General Knowledge, making their total 200 marks.
In addition, the exam includes negative marking. One-third of the marks are deducted for incorrect answers.
CDS Syllabus Overview
The CDS Exam syllabus covers multiple subjects. The General Knowledge section includes history, geography, polity, economics, science, and current affairs.
Meanwhile, the English paper tests grammar, vocabulary, comprehension, and verbal ability. The Mathematics syllabus is based on Class 10 level topics such as algebra, trigonometry, geometry, statistics, and mensuration.
What Happens After the CDS Written Exam?
Candidates who clear the written CDS Exam move to the SSB Interview stage. The Services Selection Board conducts a five-day assessment process.
This stage evaluates personality, leadership skills, communication ability, and psychological traits.
How does Ekam IAS Academy Hyderabad prepare students for CDS and SSB?
Ekam IAS Academy’s Hyderabad campus provides comprehensive SSB preparation covering every stage of this rigorous selection process through mock GDs, psychological test practice, and interview simulations with experienced trainers.
Conclusion
The CDS Exam provides a prestigious opportunity for graduates to join the Indian Armed Forces as officers. With proper preparation and consistent practice, aspirants can successfully clear the CDS Exam and begin their journey in the defence services.



CDS Exam 2025-FAQs Answered
What is the CDS Exam and who conducts it?
The CDS Exam (Combined Defence Services Exam) is conducted by UPSC twice a year to recruit officers for the Indian Army, Navy, and Air Force. It is one of the most prestigious defence examinations for graduates in India.
What is the eligibility for the CDS Exam 2025?
To appear for the CDS Exam, candidates must have a graduate degree from a recognised university. Engineering is required for INA, while Physics and Mathematics in Class 12 are needed for the Air Force Academy.
What is the exam pattern of the CDS Exam?
The CDS Exam pattern includes three papers: English, General Knowledge, and Elementary Mathematics, each carrying 100 marks. However, OTA candidates only appear for English and General Knowledge.
What happens after clearing the CDS written exam?
Candidates who qualify in the CDS written exam are called for the SSB Interview, a five-day assessment process. It evaluates personality, leadership ability, and communication skills required for defence officers.
What subjects are included in the CDS syllabus?
The CDS syllabus covers English grammar and comprehension, General Knowledge, and Class 10 level Mathematics. GK topics include history, geography, polity, science, and current affairs.

