01. What is NDA?
The National Defence Academy examination is conducted by the Union Public Service Commission (UPSC) for admission to the National Defence Academy and Naval Academy, subject to the official eligibility and entry rules.

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Preparation guidance for the National Defence Academy entrance examination, including Mathematics, the General Ability Test and examination practice.
Explore NDABuild subject knowledge, strengthen fundamentals and improve your approach to school-level learning.
Develop logical thinking, general awareness, reading habits and regular question-solving skills.
Practise communication, teamwork, confidence, decision-making and responsible leadership.
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Understand the examination, plan your preparation and work towards your defence career goals.
The National Defence Academy examination is conducted by the Union Public Service Commission (UPSC) for admission to the National Defence Academy and Naval Academy, subject to the official eligibility and entry rules.
Eligibility includes prescribed age limits, educational qualifications, nationality conditions and physical or medical standards. Exact requirements depend on the relevant notification and entry.
The written examination generally consists of Mathematics and the General Ability Test (GAT). Candidates who qualify proceed through the applicable selection stages.
| Paper | Maximum Marks | Duration |
|---|---|---|
| Mathematics | 300 | 2.5 hours |
| General Ability Test (GAT) | 600 | 2.5 hours |
| Total written examination | 900 | 5 hours total |
Check the latest UPSC NDA notification for the current pattern, syllabus, marking scheme and selection rules.
Sets, relations, functions, real and complex numbers, quadratic equations, sequences, series, permutations, combinations and binomial theorem.
Matrix operations, determinants, inverse matrices and solving systems of linear equations.
Trigonometric ratios and identities, angle relationships, heights and distances, and properties of triangles.
Functions, limits, continuity, differentiation, applications of derivatives, integration and differential equations.
Lines, circles, conic sections, distances, slopes and three-dimensional geometry.
Data interpretation, measures of central tendency and dispersion, probability and related concepts.
Grammar, vocabulary, comprehension, sentence structure, usage and reading practice.
Fundamental scientific concepts, everyday applications, matter, energy, motion, electricity and basic chemical principles.
Indian history, freedom movement, geography, climate, resources and important world developments.
National and international developments, science and technology, sports, awards and important events.
The Services Selection Board (SSB) assesses candidates through a multi-stage process designed to evaluate suitability for officer training. Preparation may include reasoning practice, psychological-test familiarisation, group tasks, interview practice and communication development.
Screening typically includes the Officer Intelligence Rating (OIR) tests and Picture Perception and Description Test (PP&DT).
Further assessment includes psychological tests, group testing officer tasks and the personal interview, as applicable to the selection process.
Recommendation is followed by prescribed medical examination and merit-based selection, subject to vacancies and applicable rules.
Official information: UPSC official website โ
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It is a UPSC-conducted examination for admission to the National Defence Academy and Naval Academy under the applicable entry conditions.
Prepare Mathematics and the General Ability Test, which includes English and general knowledge subjects. Always follow the latest official syllabus.
Start with the official syllabus, assess your current level, make a timetable and practise questions consistently.
No. Candidates must qualify subsequent selection stages and meet medical, eligibility and merit requirements.
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