CDS

Combined Defence Services (CDS) Examination is conducted by UPSC twice a year to select officers for the Indian Military Academy (IMA), Indian Naval Academy (INA), Air Force Academy (AFA), and Officers Training Academy (OTA). Candidates undergo service-specific training and are commissioned as officers in the Indian Armed Forces.

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Students preparing for CDS

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Formula of the day
Maths · Integration · 9 formulae in the cheatsheet
Trap of the day
CDS Elementary Maths rewards speed on basics — percentages, ratio, mensuration, time-work. Don’t over-invest in one hard sum.

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Quizzes

10 questions · ~10 minutes · instant rank & AI diagnosis

Dual AI-verified questions Real exam pattern 2 quizzes free, then 10 credits per quiz

#1

Error Spotting in Sentences Advanced Challenge | CDS

10 Qs · ~10 min
#2

Indian Constitution Fundamental Rights Fundamentals | CDS

10 Qs · ~10 min
#3

Synonyms and Antonyms Usage Fundamentals — Free CDS Quiz

10 Qs · ~10 min