CDS

📌 Overview

CDS is the UPSC examination for graduates who wish to join the Indian Military Academy (Dehradun), Indian Naval Academy (Ezhimala), Air Force Academy (Hyderabad / Dundigal) and Officers’ Training Academy (Chennai — men and women courses as notified).

It is held twice a year. Written papers are objective. Candidates who clear the written cut-off for their academy choice are called to SSB. Final merit is academy-wise among medically fit, SSB-recommended candidates.

UPSC Calendar 2026 listed CDS (I) on 12 April 2026 and CDS (II) on 13 September 2026 (same Sundays as NDA in that calendar).

📋 Eligibility (framework — read the notice)

• IMA: Unmarried male graduates; age about 19–24.
• INA: Unmarried male engineering graduates (or as notified); Physics / Maths at 10+2 plus degree rules apply.
• AFA: Unmarried candidates with Physics and Mathematics at 10+2 plus a graduate degree; flying-branch medicals are stricter. Age about 19–24.
• OTA (SSC): Graduates; men and women as per course; age about 19–25; marital status rules differ from IMA.
• Nationality and physical standards follow the CDS appendix. Women are eligible for OTA and for other academies only to the extent the latest government / UPSC rules allow.

📝 Written Pattern

• English: 120 questions, 100 marks, 2 hours
• General Knowledge: 120 questions, 100 marks, 2 hours
• Elementary Mathematics: 100 questions, 100 marks, 2 hours (not required for OTA)

Negative marking: 1/3rd of the marks assigned to that question. OTA candidates take only English and GK (200 marks). IMA / INA / AFA take all three papers (300 marks).

📚 Syllabus Snapshot

• English: Grammar, vocabulary, comprehension, para jumbles, synonyms / antonyms.
• GK: Current affairs, Indian history, geography, polity, economy, science (Class 10 level), defence awareness.
• Maths: Arithmetic, algebra, trigonometry, geometry, mensuration, statistics — roughly Class 10–11.

🔗 Official Resources

• UPSC Official Website
• Apply Online
• Join Indian Army / Navy / Air Force career sites for academy information and medical standards

💡 Preparation Tips

• English and GK decide OTA ranks entirely — do not treat them as “easy papers”.
• Maths cut-offs for IMA can be sharp; revise NCERT 10–11 and past CDS maths papers.
• Read one newspaper and a monthly current-affairs compilation.
• Begin SSB personality and fitness work during written preparation, not after the result.

🗂️ How to build your personal syllabus sheet

1. Download the official syllabus / information handout PDF tonight.
2. Copy every heading into a notebook page or spreadsheet.
3. Against each heading write: Book chapter / NCERT unit / YouTube playlist name / last PYQ year you solved.
4. Mark High / Medium / Low after you solve 3 years of PYQs — not before.
5. Revise High topics four times, Medium twice, Low once, all with PYQs.

Current affairs — one method for every exam on this site

• Read (do not only watch): one newspaper or PIB daily digest.
• Make 5–10 lines per important scheme, report, judgment, RBI decision or science mission.
• Revise a 30-day file every Sunday and a 6-month file before Prelims / Mains.
• Link every CA note to a static syllabus heading (polity, economy, environment, banking, defence).

PYQ rule

• If a topic has not appeared in 8–10 years and is tiny in the official syllabus, keep it low priority.
• If a topic appears every year (polity articles, percentage, RC, banking rates, NCERT biology lines), it is High regardless of coaching “new pattern” videos.

📊 Exam Trend & Highest-Weightage Areas

Commissions do not publish an official chapter-wise weightage table. The points below come from public previous-year papers and widely used coaching analyses. Use them to decide revision order, not to skip a listed syllabus topic.

CDS trends

• OTA list uses only English + GK. IMA/INA/AFA add Elementary Maths.
• English is not “easy marks” — comprehension and grammar cut-offs bite.
• GK = current + static polity/history/geo/science + defence exercises.

📚 What Content You Should Actually Follow

1. Official syllabus PDF of the current year — print it and tick topics.
2. Official previous year papers (last 8–10 years) from the commission / NTA / IBPS / SSC website.
3. One primary book per subject (listed below). Do not collect 10 PDFs of the same chapter.
4. NCERT Class 6–12 where the exam is GS / science / maths based — free on ncert.nic.in.
5. Current affairs only from a newspaper + one monthly compilation + the official PIB / ministry sites.
6. Mocks that copy the live interface (sectional timer, NAT, descriptive box).

📖 Standard Books (widely used by serious aspirants)

• Polity: Indian Polity — M. Laxmikanth; NCERT Class 11 Indian Constitution at Work
• Modern History: Spectrum (Rajiv Ahir); NCERT Themes in Indian History Part III
• Geography: NCERT Class 11–12; Certificate Physical and Human Geography — G.C. Leong (selective)
• Economy: NCERT Class 11–12; Indian Economy — Ramesh Singh or Sanjiv Verma (selective); Economic Survey highlights; Union Budget summary
• Environment: NCERT biology ecology units; Shankar IAS Environment (selective)
• Science (SSC / RRB / GD): Lucent GK science + NCERT 6–10
• Quant / Maths (SSC): SSC previous papers + Rakesh Yadav / Kiran PYQ or equivalent type-wise book; NCERT 8–10 for basics
• Quant (Bank / CAT): Arun Sharma or Sarvesh Verma selectively; daily DI sets
• English grammar: Wren & Martin (selective) + Neetu Singh (KD Campus) Plinth to Paramount / SP Bakshi Objective General English
• Reasoning: R.S. Aggarwal (foundation) + exam-specific PYQ book (Kiran / Adda / Oliveboard)
• Static GK: Lucent General Knowledge; one atlas (Oxford / Orient Blackswan)
• JEE / NEET Physics: H.C. Verma; D.C. Pandey or Physics Galaxy; NCERT exemplar
• JEE / NEET Chemistry: NCERT first; N. Awasthi / M.S. Chauhan / V.K. Jaiswal as level demands
• JEE Maths: Cengage or Arihant series + previous JEE Main / Advanced papers
• NEET Biology: NCERT Class 11–12 line by line; MTG / All-in-one only after NCERT
• CAT VARC: past CAT RCs; a good newspaper editorial habit
• GATE: standard UG textbooks of the branch + made-easy / ACE previous paper books + official GATE papers on the organising IIT site

Buy the latest edition. Second-hand previous-year paper books are enough for practice. Coaching photocopies are optional.

🌐 Official & Open / Free Content (use these first)

• NCERT textbooks (free PDF)
• ePathshala
• NPTEL — free engineering / science lectures by IIT faculty
• DIKSHA
• Press Information Bureau — authentic government news
• Union Budget & Economic Survey
• RBI — monetary policy, bulletin (banking / RBI / NABARD / SEBI)
• UPSC previous papers and cut-offs
• SSC notices and some paper archives
• IBPS information handouts
• NTA — JEE, NEET, CUET, UGC NET, CSIR NET mocks and keys
• SWAYAM — free university courses
• Khan Academy (free world-class maths / science videos mapped to school level)
• Official mock / practice portals of NTA, IBPS (when opened) and JoSAA / MCC counselling brochures

Prefer a government PDF over a random Telegram file. Fake “memory-based papers” with wrong keys waste months.

▶️ YouTube Channels & Teachers (free classes — pick ONE per subject)

These are well-known public education channels. They are not official partners of this website. Watch playlists, not 10 live classes a day. Pause and solve; do not only listen.

School / JEE / NEET foundation

• Physics Wallah (Alakh Pandey) — Physics and complete JEE / NEET boards-to-entrance path; also Defence / SSC verticals under PW
• Khan Academy India — calm concept videos for Maths and Science
• ExamFear / LearnoHub — chapter-wise school Science and Maths
• Physics Galaxy (Ashish Arora) — JEE Physics depth
• Mohit Tyagi — JEE Mathematics (long but thorough playlists)
• Unacademy JEE / NEET and Vedantu JEE — free live plus recorded batches

UPSC / State PSC

• Mrunal Patel — Economy, Budget, Economic Survey (also useful for RBI / NABARD)
• Drishti IAS — Hindi + English current affairs and GS
• StudyIQ IAS — daily CA and subject crash courses
• Vision IAS — current affairs and strategy videos
• ForumIAS / OnlyIAS / Sleepy Classes — optional and GS answer writing samples
• Unacademy UPSC — free editorial and GS sessions

SSC / Railway

• Gagan Pratap Maths — type-wise SSC Maths
• Rankers Gurukul (Aditya Ranjan) — arithmetic for beginners
• English with Rani Ma’am and KD Live (Neetu Singh Ma’am) — SSC English
• Parmar SSC — exam-oriented GA / GS
• Adda247 SSC, Wifistudy, Testbook SSC — live practice

Banking / Insurance / RBI / SEBI / NABARD

• Adda247 Bankers — full IBPS / SBI path, daily CA
• Banking Wallah (Physics Wallah) — puzzles and bank syllabus classes
• Oliveboard and Guidely — mock discussion and mains DI / puzzles
• AffairsCloud / BankersAdda written CA — monthly PDFs (website + YT recap)
• Mrunal again for RBI Grade B ESI / economy

CAT / Management

• Rodha — CAT Quant
• 2IIM CAT — VARC and strategy
• Anastasis Academy / Elites Grid — DILR sets (use free videos + official CAT papers)

GATE / ESE / CSIR

• NPTEL — first choice (IIT faculty, free)
• GATE Academy / Made Easy / ACE YouTube — previous paper discussions
• Unacademy GATE — free plus structured batches

Law / CUET / NET

• LegalEdge / LawSikho free CLAT sets and consortium sample papers
• CUET Adda / PW CUET — domain NCERT walk-throughs
• Let’s Crack UGC NET / Unacademy NTA-UGC — Paper 1 playlists

How to watch: one teacher per subject, 1.25× speed, notebook open, 30-minute video + 30-minute self-practice. Unfollow extra channels.

🗓️ A Simple Content Routine (works for almost every exam on this site)

• Morning (60–90 min): newspaper or PIB + 10 MCQs of yesterday’s CA
• Mid-day (2–3 hrs): one static / core subject from the official syllabus with a standard book
• Evening (90 min): PYQs of that chapter + error log
• Night (45 min): weak-area drill (CSAT / English / formulae)
• Weekly: one full mock in exam conditions + 2-hour analysis
• Monthly: revise the error log, not the whole bookshelf

✅ Open-source & low-cost practice platforms

• Official PYQ PDFs (UPSC, NTA keys, IBPS memory-based after official handout)
• NTA Abhyas / practice tests when the exam window opens
• Free weekly mocks: Oliveboard, Testbook, Adda247, Gradeup/BYJU’S Exam Prep (limited free tier)
• Anki / any free flashcard app for formulae and polity articles
• Google Arts & Culture / Survey of India maps for geography outline practice

⚠️ How to treat coaching names on this page

Book names and YouTube teachers are listed because lakhs of students already use them in public. This site does not sell their courses and does not guarantee a rank if you watch them. Always cross-check facts with the official syllabus and previous papers. If a video contradicts the official notification, trust the notification.

⚠️ Disclaimer

Academy-wise vacancies, age tables and whether women can apply to a particular academy are notified each cycle on upsc.gov.in.