Complete CDS Written Bundle
Every QUATRAE CDS Elementary Mathematics, English and General Knowledge book — the exact material 86.8% of CDS (II) 2026 mapped to.
83 books · instant download · yours forever
₹1,499₹6,55777% OFF
See every book inside →
FREEQUATRAE CDS SERIES · MASTER KEY
CDS (II) 2026 Key
All 333 questions of CDS (II) 2026 — solved step by step, graded on the QUATRAE 1–10 difficulty scale, and traced to the exact QUATRAE book and page that teaches them. 289 of 333 questions (86.8%) map straight to QUATRAE CDS Material. Free for every signed-in aspirant.
100% FREE₹0for signed-in aspirants
333Questions solved
86.8%Mapped to QUATRAE CDS Material
132Pages
5.20/10Mean difficulty
27Topics analysed
PREVIEW 6 PAGES
Free for every QUATRAE account. One-tap Google sign-in, then the PDF downloads automatically.
THE MAPPING
86.8% of CDS (II) 2026 maps straight to QUATRAE CDS Material.
We did not write this key and then go looking for matches. Every question was checked, one by one, against the QUATRAE CDS books. Elementary Mathematics mapped 100 out of 100 — every single question tests a concept taught in a QUATRAE Mathematics book, and the key prints the book and page number next to the solution.
English mapped 93 out of 120 — we count an antonym or synonym only when the exact tested word is in the QUATRAE word-list. General Knowledge mapped 96 out of 113: 87 to the static concept books and 9 current-affairs questions to the QUATRAE Lecturette and Group Discussion issues. Anything we could not honestly map is left uncounted.
An aspirant who has finished the QUATRAE CDS Material has already studied the teaching behind 289 of these 333 questions. That is the gap between guessing and knowing — and it is the material in the bundles below.
86.8%289 of 333 questions mapped
to QUATRAE CDS Material
to QUATRAE CDS Material
Static book · pageLecturette / GD (current affairs)Unmapped
Open the mapping card ↗Inside this key
More than option letters. A full post-mortem of the paper.
- Sequential answer key for all 333 questions — check your score in minutes
- Every question fully solved, with the working shown, not just the option letter
- QUATRAE 1–10 difficulty level on every question, so you know which misses actually matter
- Book-and-page reference on 289 questions — open the page, fix the gap the same day
- Subject-wise analysis: topic weightage, difficulty spread and where the marks were
- Honest mapping — the 44 questions our material did not cover are marked unmapped, not hidden
Six pages, before you even sign in.
See the cover, the honest mapping statement, the paper summary, the sequential answer key, a subject analysis and fully solved questions. The complete 132-page PDF is a free download.
Cover · 1 of 6Own the books this paper was mapped to.
The key tells you which QUATRAE page teaches each question. The bundles put every one of those pages in your hands — one payment, instant download, yours forever.
CDS (Written + SSB) Bundle
The full CDS written library plus the complete SSB bundle — OIR, PPDT, TAT, WAT, SRT, GD and Lecturette. Clear the paper, then clear the board.
313 books · instant download · yours forever
₹4,499₹21,11079% OFF
See every book inside →Complete NDA Written Bundle
Every QUATRAE NDA Mathematics, English and General Knowledge book — the exact material 94.4% of NDA (II) 2026 mapped to.
120 books · instant download · yours forever
₹1,999₹9,48079% OFF
See every book inside →NDA (Written + SSB) Bundle
The full NDA written library plus the complete SSB bundle — OIR, PPDT, TAT, WAT, SRT, GD and Lecturette. Clear the paper, then clear the board.
350 books · instant download · yours forever
₹4,999₹24,03379% OFF
See every book inside →Free · 132 pages · 333 solved questions
CDS (II) 2026 Key
Also appearing for NDA? Get the NDA (II) 2026 Key →
Free for every QUATRAE account. One-tap Google sign-in, then the PDF downloads automatically.
This key is prepared independently by QUATRAE from the question paper and is for self-assessment; the official key published by UPSC is final. Your copy is stamped with your account email and is for personal use only. QUATRAE is an independent practice platform, not affiliated with UPSC, the Indian Armed Forces or any Services Selection Board.