NDA Exam Pattern 2026: Complete Guide to Written Exam, Marking Scheme, SSB Interview & Selection Process
Aspiring to join the National Defence Academy is a dream shared by thousands of young Indians every year. Understanding the NDA Exam Pattern is the first and most critical step toward turning that dream into reality. Conducted by the Union Public Service Commission (UPSC) twice a year, the NDA & NA examination follows a structured, multi-stage selection process designed to identify candidates with the academic competence, mental agility, and Officer-Like Qualities (OLQs) required for the Indian Armed Forces.
This detailed guide covers every fact related to the NDA Exam Pattern for 2026—written examination structure, marking scheme, negative marking, subject-wise weightage, SSB Interview process, total marks, and final merit preparation. The information is based on the latest UPSC notifications and remains consistent for both NDA I and NDA II examinations.
Overview of NDA Selection Process
The NDA selection process consists of two independent stages of equal weightage:
- Written Examination – 900 marks
- SSB Interview (Intelligence & Personality Test) – 900 marks
Grand Total: 1800 marks
Candidates must clear the written exam to be called for the SSB Interview. Final merit is prepared based on the combined performance in both stages, followed by medical examination and service preference.
NDA Written Exam Pattern 2026 – Detailed Structure
The written examination is conducted offline (pen-and-paper mode) on a single day in two sessions. All questions are objective type (Multiple Choice Questions). The papers are bilingual (English and Hindi), except for the English section of the General Ability Test.
| Paper | Subject | Number of Questions | Maximum Marks | Duration | Marks per Correct Answer | Negative Marking |
|---|---|---|---|---|---|---|
| Paper I | Mathematics | 120 | 300 | 2½ hours | 2.5 | –0.83 |
| Paper II | General Ability Test (GAT) | 150 | 600 | 2½ hours | 4 | –1.33 |
| Total | 270 | 900 | 5 hours | – | – |
Typical Timings (as per recent notifications):
- Mathematics: Usually morning session (e.g., 10:00 AM – 12:30 PM)
- General Ability Test: Afternoon session (e.g., 2:00 PM – 4:30 PM)
Key Points about the NDA Exam Pattern:
- Mode: Offline (OMR-based)
- Language: English & Hindi (bilingual for Maths and GAT Part B)
- No sectional cut-off in the written exam, but candidates must secure minimum qualifying marks as decided by UPSC
- Unanswered questions carry zero marks (no penalty)
- One-third of the marks assigned to a question are deducted for every wrong answer
Mathematics Paper – Detailed Pattern
The Mathematics paper tests Class 11 and 12 level concepts. It carries 300 marks with 120 questions.
Major Topics Covered:
- Algebra
- Matrices and Determinants
- Trigonometry
- Analytical Geometry of Two and Three Dimensions
- Differential Calculus
- Integral Calculus and Differential Equations
- Vector Algebra
- Statistics and Probability
Each correct answer awards 2.5 marks. A wrong answer results in a deduction of approximately 0.83 marks. Strong conceptual clarity and speed are essential because the paper is calculation-intensive.
General Ability Test (GAT) – Detailed Pattern
The GAT paper is divided into two parts and carries 600 marks:
Part A – English (200 marks | 50 questions)
Focus areas include grammar, vocabulary, comprehension, and usage.
Part B – General Knowledge (400 marks | 100 questions)
Approximate distribution of marks (based on consistent past patterns):
- Physics – around 100 marks
- Chemistry – around 60 marks
- General Science – around 40 marks
- History, Freedom Movement & Polity – around 80 marks
- Geography – around 80 marks
- Current Events – around 40 marks
The GAT paper rewards both static knowledge and awareness of current national and international developments, particularly those related to defence and strategic affairs.
Negative Marking in NDA Exam Pattern
Negative marking is a decisive factor in the NDA Exam Pattern.
- Mathematics: –0.83 per wrong answer
- GAT: –1.33 per wrong answer
Intelligent attempt strategy is more important than attempting every question. Leaving doubtful questions blank is often the safer choice.
SSB Interview Pattern – The 900-Mark Personality Assessment
Candidates who clear the written cut-off are called for the Services Selection Board (SSB) Interview, which lasts 4–5 days and carries 900 marks. The SSB evaluates Officer-Like Qualities through a two-stage process.
Stage I (Day 1 – Screening):
- Officer Intelligence Rating (OIR) Test – Verbal and Non-Verbal Reasoning
- Picture Perception and Description Test (PPDT)
A large number of candidates are screened out on Day 1.
Stage II (Days 2–5):
- Psychological Tests: Thematic Apperception Test (TAT), Word Association Test (WAT), Situation Reaction Test (SRT), Self-Description Test
- Group Testing Officer (GTO) Tasks: Group Discussion, Group Planning Exercise, Progressive Group Task, Half Group Task, Command Task, Individual Obstacles, Lecturette, Final Group Task
- Personal Interview
- Conference (final recommendation decision)
The three assessors (Psychologist, GTO, and Interviewing Officer) evaluate the candidate holistically. There is no fixed marks distribution declared for individual tests; the board recommends candidates based on overall performance.
Recommended candidates then undergo a thorough medical examination at a military hospital.
Total Marks & Final Merit List
| Stage | Maximum Marks |
|---|---|
| Written Examination | 900 |
| SSB Interview | 900 |
| Grand Total | 1800 |
Final merit is prepared by UPSC on the basis of total marks obtained in the written examination and SSB Interview. Service allocation (Army, Navy, Air Force) depends on vacancies, medical fitness, and candidate preferences.
Why Understanding the NDA Exam Pattern Matters for 2026 Aspirants
A clear grasp of the NDA Exam Pattern helps candidates:
- Allocate preparation time proportionately (Maths 33% + GAT 67% of written marks)
- Develop accurate attempt strategies under negative marking
- Begin SSB personality development early rather than treating it as an afterthought
- Align physical fitness and OLQ training with the overall selection process
The pattern has remained stable for several years, giving serious aspirants a reliable framework for long-term preparation.
Prepare Smartly with the Best NDA Coaching in Dehradun
Success in the NDA examination requires more than just knowing the pattern—it demands disciplined preparation, regular testing, conceptual clarity, and structured personality development.
Indian Defence Institute, recognised as the Best NDA Coaching in Dehradun, offers a complete ecosystem for NDA aspirants. Located in the educational hub of Dehradun, the institute provides expert faculty (including experienced educators and defence background mentors), integrated written + SSB training, regular mock tests aligned with the latest NDA Exam Pattern, physical training, and a disciplined environment that mirrors the values of the Armed Forces.
Whether you are starting after Class 10 through a foundation course or preparing after Class 12, Indian Defence Institute focuses on building both academic excellence and Officer-Like Qualities so that aspirants are fully ready for every stage of the selection process.
Master the NDA Exam Pattern, prepare systematically, and take the first confident step toward serving the nation. The path is demanding—but with the right guidance and consistent effort, it is achievable.
Frequently Asked Questions (FAQs) on NDA Exam Pattern
1. What is the complete NDA Exam Pattern 2026?
The NDA Exam Pattern consists of two stages of equal weightage. The written examination (900 marks) has two papers — Mathematics (120 questions, 300 marks, 2½ hours) and General Ability Test (150 questions, 600 marks, 2½ hours). Candidates who clear the written exam are called for the SSB Interview (900 marks), which is conducted over 4–5 days. The final merit list is prepared out of a total of 1800 marks.
2. Is there negative marking in the NDA Exam Pattern?
Yes, negative marking is an important part of the NDA Exam Pattern. In the Mathematics paper, 0.83 marks are deducted for every wrong answer. In the General Ability Test (GAT), 1.33 marks are deducted for each incorrect response. No marks are deducted for unattempted questions.
3. How many marks are allotted to Mathematics and GAT in the NDA written exam?
As per the official NDA Exam Pattern, the Mathematics paper carries 300 marks (120 questions), while the General Ability Test carries 600 marks (150 questions). The GAT is further divided into English (200 marks) and General Knowledge (400 marks).
4. What is the duration and mode of the NDA written examination?
The NDA written examination is conducted offline (pen-and-paper mode) on a single day. Each paper lasts 2½ hours, making the total duration 5 hours. Both papers contain objective-type (MCQ) questions and are bilingual (English and Hindi), except for the English section of GAT.
5. How is the SSB Interview structured in the NDA selection process?
The SSB Interview carries 900 marks and is conducted over 4–5 days in two stages. Stage I (Day 1) includes the Officer Intelligence Rating (OIR) test and Picture Perception & Description Test (PPDT). Stage II includes Psychological Tests, Group Testing Officer (GTO) tasks, Personal Interview, and Conference. Only recommended candidates proceed for the medical examination.
6. What is the total marks distribution in the NDA Exam Pattern?
The complete NDA selection process is based on 1800 marks — 900 marks for the written examination and 900 marks for the SSB Interview. Final merit is prepared by combining scores from both stages after candidates clear the medical examination.
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