Introduction
The National Defence Academy (NDA) is the dream destination for many students in India who want to serve the nation in the Indian Army, Navy, or Air Force. It is one of the most prestigious defence entrance exams, held twice a year by the Union Public Service Commission (UPSC).
NDA is especially popular among Science stream students after 12th. With high competition and limited seats, focused preparation is the key to cracking this exam.
In this NDA exam guide, we’ll cover everything — from eligibility to books, tips to FAQs — to help you prepare better for NDA 2025.
What is NDA Exam?
Overview
- Full Form: National Defence Academy
- Conducted by: UPSC
- Frequency: Twice a year (NDA 1 & NDA 2)
- Posts Offered: Officer-level entry in Indian Army, Navy, and Air Force
Eligibility Criteria
- Nationality: Indian citizen
- Age Limit: 16.5 to 19.5 years
- Education: 12th pass (with Physics and Maths for Navy & Air Force)
- Gender: Both boys and girls (since 2021)
- Marital Status: Unmarried
NDA Exam Pattern
| Stage | Subjects | Marks | Mode |
|---|---|---|---|
| Written Exam | Mathematics General Ability Test (GAT) | 300 600 | Offline Offline |
| SSB Interview | Personality + Intelligence | 900 | Offline |
NDA Exam Syllabus Breakdown
Mathematics (300 Marks)
Covers Class 11 and 12 level topics:
- Algebra
- Trigonometry
- Differential Calculus
- Integral Calculus
- Probability
- Statistics
General Ability Test (600 Marks)
English (200 Marks)
- Grammar
- Comprehension
- Vocabulary
- Spotting errors
General Knowledge (400 Marks)
- Physics & Chemistry
- Biology & General Science
- Indian History & Geography
- Current Affairs
NDA Selection Process
- Written Test (Maths + GAT)
- SSB Interview (5-day selection process)
- Medical Examination
- Final Merit List
Only candidates who clear all stages are selected for training at NDA, Khadakwasla, Pune.
How to Prepare for NDA Exam
6-Month NDA Preparation Strategy
| Month | Focus Areas |
|---|---|
| 1–2 | Build concepts, study NCERTs, basic revision |
| 3–4 | Practice questions, previous year papers |
| 5–6 | Mock tests, time-bound practice, SSB prep |
Daily Routine for NDA Aspirants
- Morning: Maths practice (formulas + problems)
- Afternoon: GAT (Science, History, Polity) + English
- Evening: Current affairs, essay writing, revision
Best Books for NDA Preparation
| Subject | Recommended Books |
|---|---|
| Mathematics | NCERT 11 & 12, RS Aggarwal |
| GAT | Arihant NDA Pathfinder, Manorama Yearbook |
| English | Objective General English by SP Bakshi |
| Previous Papers | NDA Solved Papers – Arihant / Pathfinder |
Physical & Medical Requirements for NDA
To qualify for NDA, candidates must meet strict physical and medical standards:
- Height: 157 cm (minimum for boys), 152 cm (for girls); varies for different services
- Eyesight: 6/6 for both eyes; no color blindness
- Chest: Should be well developed with proper expansion
- No flat feet, knock knees, or scoliosis
- Mental and physical fitness is essential
NDA Preparation Tips – Do’s and Don’ts
✅ Do’s:
- Start early, preferably from Class 11
- Read newspapers daily to boost GK and vocabulary
- Practice writing essays and letters for the SSB
- Take mock interviews to improve communication
❌ Don’ts:
- Don’t ignore the medical and interview stage
- Don’t rely only on coaching
- Don’t skip the NCERT basics
- Don’t panic during the SSB interview
NDA SSB Interview – What to Expect
The SSB Interview is a 5-day process that checks your personality, leadership, and intelligence.
- Day 1: Screening (OIR test + Picture Perception and Description Test – PPDT)
- Day 2-5:
- Psychological Tests
- Group Tasks
- Personal Interview
- Conference round
Tips: Be honest, stay confident, communicate clearly, and show leadership traits.
Frequently Asked Questions (FAQs)
Yes, girls can apply since 2021 under the same conditions as boys.
Yes, but with dedication and planning, many students clear it in their first attempt.
No, self-study with the right resources is enough.
During training: ₹56,100/month. Post-commission: Level 10 starting at ₹56,100 + allowances.
No. You must be appearing for or passed Class 12 at the time of application.
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Conclusion
Joining the NDA is a proud and life-changing journey for young Indians. It not only offers a highly respected career but also builds discipline, leadership, and strength.
With the right preparation, strategy, and confidence — you can crack NDA 2025 and begin your journey to serve the nation.
✅ Still have questions about NDA preparation?
Drop your doubts in the comments, or share this guide with friends who want to join the defence forces.
Let’s help each other reach the academy!
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