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CDS Exam

CDS Exam


The CDS Written Examination is conducted by UPSC twice every year for graduates to fill the vacancies of the following institutions of the Indian Armed Forces.

  • Indian Military Academy (IMA); Dehradun
  • Indian Naval Academy; Ezhimala
  • Air Force Academy; Hyderabad
  • Officers Training Academy (OTA); Chennai. For both Men and Women


The Notification for the CDS written exam is issued in the months of November and July. UPSC holds the exam in the months of Feb and October. Students can apply for the CDS and OTA written examination online only on UPSC website.


Educational; Graduates- qualified or appearing (final year) are eligible to sit for the CDS written exam. For Air Force and Navy candidates must have engineering /physics and mathematics subjects. For details check the notification. For OTA, Graduates and final-year students can to apply.
Age; 19 ½ to 24 years on date of joining IMA. For OTA, age must be between 19 ½ to 25 years on the date of joining.
Sex; Only male candidates can sit for the CDS written exam. Both ladies and men can apply for the OTA exam.


The CDS written exam consists of three papers;

  1. General Knowledge- 100 Marks
  2. English- 100 Marks
  3. Mathematics- 100 Marks

All three papers of the CDS written exam are held on the same day and the duration of each paper is two hours. The papers for CDS written exam are of 100 marks each and the total for the CDS written exam is of 300 marks.
The OTA Written exam consists of only two of the above-mentioned papers;

  1. General Knowledge- 100 Marks
  2. English- 100 Marks

OTA Candidates are exempted from the Mathematics exam. The remaining two papers of the OTA written exam are of 100 marks each and the total for the OTA written exam is of 200 marks.


The CDS written exam tests the candidates in diverse fields like English, History, Polity, Economics, Geography, Maths, Life Science,  Physics, Chemistry, Current Affairs, GK,   etc. For OTA exam, the syllabus is the same as CDS expect, OTA candidates do not have to sit for mathematics papers. For viewing the detailed syllabus please click the link.


UPSC declares the result of CDS/OTA written exam in 3-4 months after the written exam. The same can be viewed on the UPSC website. Being a competitive exam and there is no fixed cut-off percentage for passing. Candidates who perform better are sent the call letters for SSB interviews. The final merit list is prepared after the SSB interview’s final result and displayed on the UPSC website. Joining instructions are sent to students based on vacancies available as per the merit list.


The Parmanu Defence offers coaching for the UPSC CDS/OTA written examinations. The faculty at Parmanu Defence is highly qualified and vastly experienced in successfully coaching students for CDS/OTA examinations. The standards of excellence followed by Parmanu Defence ensure that each student who opts for coaching with us feels confident and well-prepared for the exam. Not only do we cover the entire syllabus subject by subject as per UPSC, we also prepare our students with mock tests, previous year question papers and doubt-clearing sessions which are conducted each week to monitor each student’s progress. Mock test/ weekly test results are also discussed to pinpoint where the student may be lacking. This ensures that the students know what to expect in the examination, how to approach the examination, manage time efficiently and get the best possible results. Experienced and updated faculty teaches students how to handle the CDS/ OTA examination specifically; they focus on the format and type of questions likely to be asked in the exam. Students can learn many formulae and shortcuts to get quick and accurate answers while attempting the examination. Apart from this, we provide extensively researched study material that helps students to access, organize and systematically approach the vast syllabus easily..


  • Infrastructure: The Parmanu Defence campus provides unmatched infrastructure, and a pollution-free, SSB-like environment with on campus hostel and mess. Our classrooms for written coaching are air-conditioned and well-supported by modern audio-visual technological aids and 24-hour power back.
  • Faculty: The highly qualified, experienced and updated faculty for CDS/ OTA written coaching provides students with the right guidance to get the best results in the exam. Students are coached by permanent faculty members, not part-time teachers (working on per class basis) as in many other institutes.
  • Fully equipped library: Only Parmanu Defence offers the facility of a fully equipped library offering 1000+ relevant and important books pertaining to the syllabus of the examination and competitive exam preparation. Students can issue these books for self-study, revision, practice etc.
  • Study Room/ Reading Room: On-campus study/ reading rooms are available to provide students with a quiet and peaceful environment, perfect for self-study and preparations. These rooms are open daily till late hours.
  • Motivational lectures and movies: Parmanu Defence specializes in motivating the youth towards serving our great nation. Students interact with candidates from all over the country working towards a common goal. Motivational lectures and movies shown, leave the students inspired to do something for the country and become better human beings.
  • Discipline & Time Management: Parmanu Defence is a Defence preparatory institute with strict rules that all students must abide by. All students are expected to follow the Discipline Code and civil Code of Conduct of Parmanu Defence, failing which they may be expelled without refunds. These guidelines enforced by the academy inculcate good values and discipline in the students. Students also learn the importance and benefits of proper time management. Sundays and other holidays are not observed to maintain continuity and to ensure students can focus on upcoming exams without distractions.
  • Only Parmanu Defenceruns Year Round batches for CDS/ OTA written exam unlike other institutes that only open for a few months before the examination
  • Exam-specific coaching: Since exam patterns vary for each examination, Parmanu Defence offers exam-specific coaching for NDA, CDS, AFCAT etc.

Find Our Students’ Reviews For CDS Exam Coaching Classes

Shivkumar SharmaShivkumar Sharma
12:26 19 Mar 24
I attribute my improved performance and the loss of 8 kilograms over 8 months to the invaluable tips, tricks, and dietary advice provided by Hari sir at Parmanu Defence Academy. I am deeply grateful for their guidance. JAI HIND!
We Are CrazyWe Are Crazy
12:16 19 Mar 24
Parmanu is an exceptional institution for aspiring candidates in the Defense sector. They offer top-notch facilities and boast experienced faculty members who provide outstanding support to students.
Anannya RajoriyaAnannya Rajoriya
11:28 19 Mar 24
One statement that can be used for this location is the most difficult. Such a tight schedule in nuclear defense. Exercise and running are very difficult. if anyone wants to go
Rinku KumarRinku Kumar
06:37 19 Mar 24
No 1 defence academy in Dehradun, I hope it has a good selection rate in India. I also joined this academy in best guidance of the Col.Singh (SSB EXPERT),Subodh sir (best maths Teacher ), Abhilash sir ( GS expert) with the short trick solve any question easily and Darpan sir perfect in physicsOverall one of the best defence institutes of India .
Neeraj VarshneyNeeraj Varshney
06:04 19 Mar 24
One statement that can be used for this place is Toughest of all. So so strict schedule at Parmanu Defence. Exercise and running is too rigrous. If someone wants to go please get some friends along with you. it's a nice place to improve your overall preparation though.but the discipline level is of high level at Parmanu Defence.
Reetika GoyalReetika Goyal
11:31 17 Mar 24
The academy's emphasis on practical training scenarios greatly enhances the learning experience and they provide a perfect environment for you to learn and grow.Thank you Parmanu Defence for the perfect training in defence exams.
Arun KumarArun Kumar
12:52 14 Mar 24
I highly recommend Parmanu Defence Academy to anyone seeking top-notch training for a career in defence. The instructors are not only highly knowledgeable but also dedicated to the success of each student. The academy's emphasis on practical training scenarios greatly enhances the learning experience and they provide a perfect environment for you to learn and grow.Thank you Parmanu Defence for the perfect training in defence exams.
Muskan VarshneyMuskan Varshney
15:21 05 Mar 24
Maths sir is the best teacher in dehradun for competitive exam . I feel, he is an inspiration for the young generation. I love his teaching skill. He is fantastic person . He is more like brother than teacher. He is friendly in attitude and strict in study. Please , take admission here for successful career at PARMANU DEFENCE
Boby MathurBoby Mathur
09:13 05 Mar 24
I would highly recommend this competition education institute to any student who is serious about excelling in defence competitive exam. The quality of coaching, study materials, and faculty is excellent, and the institute offers a range of program to suit the needs of different students. Overall a nice choice at Dehradun.
Dhruv VarshneyDhruv Varshney
07:24 04 Mar 24
The behavior of all teachers at Parmanu Defence are very good and friendly. They stand with us at any kind of problem. And physical training available here for any kind of defence exam. Hostels are also available for those who want to come from far away. Great institute overall .


The comprehensive course covers all aspects and the entire syllabus of the examination. The course is divided into 6 independent modules and a new module begins every Monday. Therefore, students must report for admission on Sunday for term starting on Monday morning. Admission takes place on arrival. Academy admissions office is open 24 hours a day. Seats are limited and available on first come first served basis.


The duration of each term is 6 Weeks. Six week course includes

  • Exhaustive Classroom preparation: With 150+ classroom sessions and 300+ study hours covering all aspects and entire syllabus of the examination as prescribed by the UPSC.
  • Comprehensive Study Material: With 11+ books covering the various subjects, Question banks and practice sets of each subject, ready reference notes for important topics, all extensively researched and prepared after an analysis of previous years’ exam patterns.
  • Revision and Doubt Clearing: 100+ worksheets and practice sets help students assess their progress. Previous years’ question papers are also covered. Doubt-clearing sessions are held to answer all queries of students.
  • Testing: Weekly practice tests of each subject to prepare students for upcoming competitions and provide them with vital self-assessment tools. Mock tests are also held to prepare the student for the CDS/ OTA exam.
  • Extensive Coverage of Current Affairs: Special weekly updates on defence-related news, and the latest developments, events and people in the news. General Knowledge is taken up thoroughly.
  • Subjects Covered: in the CDS written exam coaching include English, General Knowledge & Current Affairs, Mathematics, Physics, Chemistry, Biology, History, Geography, Polity, Economics, Biodiversity etc.

DAILY TIMINGS: Classes are held from Monday to Saturday from 8 AM to 5 PM (with breaks for morning and afternoon tea and lunch) Sunday is reserved for mock tests and weekly tests, extra classes and doubt-clearing sessions.


In order to prepare oneself for a competitive exam like CDS or OTA, coaching is a must to get the edge over others. In today’s competitive exams like CDS/ OTA, COACHING IS A MUST BECAUSE:

  • More than 3,00,000 students sit for this exam and the number is increasing drastically year by year. Hence making the exam more and more competitive and one mark difference could mean selection or rejection of the candidate. There are anywhere between 300- 400 seats, so serious students, must get the edge above others for which coaching is a must.
  • Students can take advantage of the vast experience of subject and examination expert faculty.
  • Examination of specific and comprehensive study material of notes, practice sets, assignments and worksheets provides the right material for preparation.
  • Any concept doubts can be cleared right away, thus students can build strong fundamentals.
  • Meeting other candidates who are sitting for the same exam can be a great motivator. Students can exchange knowledge and also have an idea of their competition.
  • Regular mock tests ensure students are mentally prepared for exam day and know exactly how to approach the exam and what to expect.
  • Students can discipline themselves, develop good concentration and form study habits, which is not easy to do with self-study.


Since Parmanu Defenceruns year-round batches for CDS and OTA examinations, students should take coaching as soon as they can spare time from their daily routines. It is advised to take coaching a few months before the exam to ensure enough time is left for practice, revision and self-study. Seats are limited and available on a first come first served basis.


For Class: Students are not required to bring any books. All study material is issued to the students upon admission. Students must bring personal registers or notebooks and stationery like pens, pencils etc. to take notes during class. 
For Hostels: Lockers are provided for valuables. Beds and mattresses are provided, but students should bring their bedding i.e. bed sheets (2 Nos.) and Pillow (with pillow covers). For winter months students should bring thick blankets and razai.
Personal items: Students are expected to dress smartly for class, please bring personal clothing accordingly. Students should carry all personal toiletries. Sports shoes are a must. Please avoid bringing expensive personal items or cash. Even though lockers are provided, students are responsible for their own personal belongings.

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