What is the NDA Exam? Eligibility, Age Limit, and Selection Process Explained

The National Defence Academy (NDA) exam is a national-level entrance test conducted by UPSC for students who wish to join the Indian Armed Forces. It is one of the most respected defence exams in India and offers entry into the Army, Navy, and Air Force wings. Students who clear this exam receive training before becoming officers in their chosen branch. At the Nation Defence Academy, we believe that understanding the NDA exam pattern, eligibility rules, and selection stages is the first step toward serious preparation.

Best NDA Coaching in Chandigarh

Many students begin their journey early by enrolling in NDA Coaching after 10th in Chandigarh so they can build strong basics in mathematics, English, and general studies. Early preparation helps students manage school education along with competitive exam readiness. Since the NDA exam tests concepts mainly from Classes 11 and 12, starting after Class 10 gives students enough time to practice and improve step by step.


NDA Exam Pattern and Subjects

The NDA written examination has two papers: Mathematics and the General Ability Test (GAT). Both papers are objective in type and were conducted on the same day.

The Mathematics paper carries 300 marks. It includes questions from algebra, trigonometry, calculus, coordinate geometry, statistics, and probability. A clear understanding of formulas and regular practice are important for scoring well.


The General Ability Test carries 600 marks and is divided into two parts. The first part tests English skills such as grammar, vocabulary, and comprehension. The second part covers general knowledge, including physics, chemistry, general science, history, geography, and current affairs. Daily reading and revision play a major role in this section.

Candidates must clear the minimum qualifying marks in both papers to move to the next stage.


Eligibility Criteria for NDA

Before applying for the NDA exam, candidates must meet certain eligibility conditions.

  • Educational Qualification:

For the Army wing, candidates must have passed or be appearing in Class 12 from a recognized board. For the Navy and Air Force wings, candidates must have studied Physics and Mathematics in Class 12.


  • Nationality:

The candidate must be a citizen of India or fulfill the nationality conditions mentioned in the official notification.


  • Marital Status:

Only unmarried male and female candidates are eligible.

Meeting these criteria is mandatory before filling out the application form.


Age Limit for NDA Exam

The age limit for NDA is clearly defined in each official notification released by UPSC. In general, candidates must be between 16.5 and 19.5 years of age at the time of joining the academy.

Since the age window is limited, students should plan their preparation carefully. Many choose integrated programs, such as NDA With Schooling after 10th in Chandigarh, to balance board exam studies with NDA preparation. This approach allows students to stay focused on both academic and defence goals without pressure.


NDA Selection Process

The NDA selection process has three main stages:

1. Written Examination

The written exam is the first stage and carries a total of 900 marks. Candidates must clear the sectional and overall cut-off marks to qualify for the next round.


2. SSB Interview

Candidates who pass the written exam are called for the Services Selection Board (SSB) interview. This stage also carries 900 marks and usually lasts five days. It includes psychological tests, group discussions, outdoor tasks, and a personal interview. Officers assess leadership skills, communication ability, confidence, and decision-making qualities.


3. Medical Examination

Candidates recommended by the SSB must undergo a medical examination. Physical and mental fitness are important for a career in the defence services. Only medically fit candidates are included in the final merit list.

Final selection is based on combined performance in the written exam and SSB interview.


Importance of Discipline and Physical Fitness

Preparation for NDA is not limited to books. Physical fitness, time management, and mental strength are equally important. Students should include daily exercise, running, and basic strength training in their routine. Reading newspapers regularly helps improve general awareness and communication skills, which are important for both the written exam and SSB interview.

Consistency matters more than studying for long hours in a single day. A fixed study plan, regular revision, and solving previous year question papers help in building confidence over time.

Final Words

The NDA exam offers a clear path for students who want to serve the nation as officers in the armed forces. Understanding the eligibility criteria, age limit, exam pattern, and selection process helps students prepare in the right direction. Starting early, staying disciplined, and following a structured plan can make a significant difference.


At Nation Defence Academy, we guide aspirants with a practical approach that focuses on concept clarity, regular practice, and personality development. Choosing the right NDA Institute in Chandigarh can support students in building the foundation required to succeed in this competitive examination and move confidently toward a defence career.


Frequently Asked Questions:

1. Can girls apply for NDA?

Yes, both boys and girls can apply.


2. What subjects are included in the NDA exam?

Mathematics and General Ability Test (GAT).


3. Is there negative marking in NDA?

Yes, marks are deducted for wrong answers.


4. How can I apply for the NDA exam?

You must apply online through the official website of the Union Public Service Commission.


5. What rank is awarded after NDA training?

Cadets are commissioned as Lieutenants in the Armed Forces.


Also Read This:

Is NDA Online Coaching Effective? A Complete Student Guide

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