NDA 2025 Preparation Guide
NDA exam requires strong Math fundamentals and broad general knowledge. Selection is through Written Exam + SSB Interview (5 days).
90-Day Study Plan
| Days | Focus |
| Day 1-30 | Mathematics — NCERT 11-12, focus on Calculus, Algebra, Trigonometry |
| Day 31-50 | English — Grammar, Vocabulary, Comprehension (read The Hindu daily) |
| Day 51-70 | GK — Physics, Chemistry (NCERT 11-12), History, Geography |
| Day 71-80 | Current Affairs (6 months) + Revision |
| Day 81-90 | Full mock tests (timed 5 hours) + analysis |
Best Books for NDA
- Math: RS Aggarwal, NCERT 11-12, Pathfinder NDA by Arihant
- English: Wren & Martin, Word Power Made Easy
- GK: Lucent's GK, NCERT Physics-Chemistry-Biology (11-12)
- History: NCERT Class 6-12 (Old + New)
- Practice: Disha NDA 10 Practice Sets, Previous Year Papers
SSB Interview Preparation
The SSB interview is a 5-day process that tests your personality, leadership, and Officer Like Qualities (OLQs):
- Day 1: Screening (OIR Test + PPDT)
- Day 2: Psychology Tests (TAT, WAT, SRT, Self Description)
- Day 3-4: GTO Tasks (Group Discussion, GPE, PGT, HGT, Command Task, FGT)
- Day 5: Personal Interview + Conference
Tip: Start reading newspapers (The Hindu/Indian Express) from Day 1. SSB tests your awareness and communication, not just knowledge.