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Study Timeline

How Long to Study for NDA (National Defence Academy)

A complete week-by-week study plan for the NDA (National Defence Academy) (Hard difficulty, ~3% pass rate).

12

Weeks

14

Hrs/Week

172

Total Hours

~3%

Pass Rate

Diagnose against the real mark split
Week 1

10-12 hours this week

  • Download the UPSC NDA notification and copy out the scheme table: Mathematics 300, General Ability Test 600, SSB 900
  • Sit one previous year NDA Mathematics paper from upsc.gov.in in exactly 2 hours 30 minutes with no calculator
  • Sit one previous year General Ability Test paper in a separate 2 hour 30 minute block on the same day to replicate the real schedule
  • Score both applying the one third penalty for every wrong answer
  • Write down your section-wise accuracy in Physics, Chemistry, General Science, History, Geography and Current Events separately, not as one General Knowledge number
Algebra and matrices
Week 2

14-16 hours this week

  • Revise sets, Venn diagrams, De Morgan laws, complex numbers and cube roots of unity from NCERT Class 11
  • Drill binary to decimal and decimal to binary conversion until it is automatic, since it appears almost every year
  • Work 60 problems on progressions, permutations, combinations and the binomial theorem
  • Complete matrices and determinants including Cramer's rule and the matrix method for three unknowns
  • Start a daily 30-minute current affairs habit using a national daily plus the PIB releases
Trigonometry and analytical geometry
Week 3

14-16 hours this week

  • Revise trigonometric ratios, identities, sum and difference formulae, multiple and sub-multiple angles
  • Work inverse trigonometric functions and 30 height and distance problems
  • Cover the circle, parabola, ellipse and hyperbola in standard and general form
  • Do three-dimensional geometry: direction cosines, direction ratios, equation of a plane and a line, equation of a sphere
  • Solve 40 English error-spotting and sentence-improvement questions
Calculus and vectors
Week 4

14-16 hours this week

  • Revise limits, continuity, differentiation rules, second order derivatives, maxima and minima
  • Work integration by substitution and by parts, definite integrals and area under a curve
  • Cover first order first degree differential equations and growth and decay applications
  • Complete vector algebra including work done by a force and moment of a force
  • Take a timed 60-question Mathematics sectional test under the negative marking rule
Physics for the General Ability Test
Week 5

14-16 hours this week

  • Revise mechanics, heat, sound, light, magnetism and electricity from NCERT Class 9 and 10 science
  • Make a one-page sheet on the working principle of every device UPSC lists, from the siphon to the mariner's compass
  • Solve 100 previous year NDA Physics questions and tag each wrong answer to a specific syllabus line
  • Practise 40 English vocabulary questions on antonyms, synonyms and idioms
  • Update the current affairs notebook with defence and strategic news
Chemistry and General Science
Week 6

12-14 hours this week

  • Cover physical and chemical changes, preparation and properties of hydrogen, oxygen, nitrogen and carbon dioxide
  • Learn acids, bases, salts, forms of carbon, fertilisers and the material lists for soap, glass, cement, paints and gunpowder
  • Revise cells, tissues, human organs, epidemics, balanced diet and the solar system
  • Solve 100 previous year Chemistry and General Science questions
  • Take a timed 50-question English sectional test
History, polity and the freedom movement
Week 7

14-16 hours this week

  • Read a broad survey of Indian history with emphasis on culture and civilisation using NCERT Class 11 and 12 material
  • Cover the freedom movement chronologically and mark the dates UPSC has asked about in past papers
  • Study the Indian Constitution and administration at elementary level, plus Five Year Plans and Panchayati Raj
  • Cover the world history block: Renaissance, American Independence, French Revolution, Industrial Revolution, Russian Revolution
  • Solve 80 previous year Section D questions
Geography
Week 8

14-16 hours this week

  • Revise latitude, longitude, time zones, the International Date Line and Earth movements from NCERT Class 11 geography
  • Cover rocks, weathering, earthquakes, volcanoes, ocean currents and tides
  • Work through the atmosphere block: pressure, planetary winds, cyclones, humidity and climate types
  • Learn the regional geography of India, its major ports and its main imports and exports using an atlas rather than notes
  • Solve 80 previous year Section E questions and take a full General Ability Test mock
Statistics, probability and full-paper practice
Week 9

16-18 hours this week

  • Cover classification of data, frequency distributions, histograms, pie charts, mean, median, mode, variance, correlation and regression
  • Work conditional probability, Bayes theorem and the binomial distribution
  • Sit two full previous year papers, Mathematics in the morning slot and the General Ability Test in the afternoon slot
  • Recompute your optimal attempt band using the one third penalty on 300 and 600 mark papers separately
  • Consolidate the current affairs notebook for the 12 months preceding the exam
SSB preparation begins in parallel
Week 10

14-16 hours this week

  • Read the SSB two-stage structure on joinindianarmy.nic.in: Stage I is the Officer Intelligence Rating test and Picture Perception and Description Test, Stage II runs over four days
  • Practise 200 verbal and non-verbal OIR-style reasoning questions under time pressure
  • Write 20 stories from ambiguous pictures in four minutes each to build PP and DT speed
  • Begin a daily physical routine: running, push-ups and the group obstacle skills the GTO tasks assume
  • Take one full written mock paper set
Error elimination
Week 11

16-18 hours this week

  • Rework every Mathematics question you have got wrong across all mocks, grouped by syllabus block
  • Redo the Physics device-principle sheet from memory and fill gaps
  • Sit one more full paper set in the exact 10:00 A.M. and 2:00 P.M. slots
  • Practise OMR marking in black ball pen only, including roll number and test booklet series encoding
  • Revise the whole current affairs notebook in two passes
Taper and logistics
Week 12

8-10 hours this week

  • Take one final full paper set early in the week, then stop mocks
  • Download the e-Admit Card, which UPSC releases on the last working day of the week preceding the exam
  • Pack the e-Admit Card, the photo ID whose details you entered in your URN profile, a clip board with nothing written on it, and several good black ball pens
  • Revise the Mathematics formula sheet and the General Knowledge one-pagers only
  • Plan to reach the venue well before entry closes, which is 30 minutes before each session starts
Working Full-Time Schedule

Duration: 18 weeks

Hours/week: 10 hours

Daily: ~2 hours on weeknights

Weekends: 3-4 hours Saturday + Sunday

Study during lunch breaks and commute time. Use weekends for deeper study sessions and practice tests.

Weekend-Only Schedule

Duration: 24 weeks

Hours/week: 7 hours

Saturday: 4-5 hours of focused study

Sunday: 3-4 hours of practice tests

Longer timeline but sustainable. Review flashcards on weeknights for 15-20 minutes to maintain retention.

Frequently Asked Questions

How long does it take to study for the NDA (National Defence Academy)?

Plan for 12 weeks of dedicated study at 14 hours per week (172 total hours). If studying while working full-time, extend to 18 weeks.

Can I pass the NDA (National Defence Academy) in 2 weeks?

It's unlikely for most candidates. The NDA (National Defence Academy) is rated "Hard" difficulty and typically requires 12 weeks of preparation. Rushing increases your risk of failing and paying the exam fee again.

How many hours a day should I study for NDA (National Defence Academy)?

Aim for 3-4 hours per day on weekdays. Quality matters more than quantity, use active recall and practice tests rather than passive reading.

Is NDA (National Defence Academy) hard to pass?

The NDA (National Defence Academy) is rated "Hard" difficulty with a pass rate of ~3%. Solid preparation over several months is recommended.

Ready to start your NDA (National Defence Academy) journey?

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