Eleven years of papers. Every key, free.
Choose NDA or CDS to open the complete 2016–2026 archive. Every paper is solved in full, difficulty-graded and mapped question by question to the relevant QUATRAE book and page. Preview every key before signing in, then download any PDF free.
CDS Keys — 2016 to 2026
7,480 solved questions across every CDS paper from 2016 through 2026, each with previews, mapping evidence and a free PDF download.
6,663 of 7,480 questions
NDA Keys — 2016 to 2026
5,940 solved questions across every NDA paper from 2016 through 2026, each with previews, mapping evidence and a free PDF download.
5,484 of 5,940 questions
Keys are prepared independently by QUATRAE from the question papers and are for self-assessment; the official key published by UPSC is final. QUATRAE is an independent practice platform, not affiliated with UPSC, the Indian Armed Forces or any Services Selection Board.