NDA I 2021 Preparation Tips for Mathematics, GAT & SSB Interview

Updated On -

Mar 19, 2021

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Sudeshna Bhar

Exams Prepmaster

UPSC organizes the National Defence Academy exam to recruit candidates for Air Force, Indian Military (Army), and for the Indian Navy twice a year. The conducting body has notified that NDA I 2021 Exam will be conducted on April 18, 2021. Check NDA exam dates

The NDA Exam consists of a written test and a personality cum intelligence test called SSB Interview. The candidates, who clear both the exams, are recommended for the final selection. Check NDA selection process

The written stage has two papers - 1) Mathematics (300 marks) and 2) General Ability Test (600). The time duration for each paper is 2 hours and 30 minutes. Before the preparation, candidates should know about the NDA exam pattern and syllabus thoroughly.

NDA Preparation

How to prepare for NDA 2021 exam?

You have to build a suitable personality, work on your spoken language, general knowledge, and other factors. To help you out with such factors, we provide you the best NDA Preparation Tips:

  • Thorough knowledge of NDA Syllabus and Exam Pattern

Before jumping into the preparation, get a printed copy of the NDA syllabus and Exam pattern. This will help candidates to cover the topics one by one and plan the timetable accordingly. NDA written exam has two subjects - mathematics and general ability test. Check NDA Syllabus here.

  • Create a customized Time-table

Candidates must know the remaining preparation time for the written exam and make a list of how many topics are required to be completed and from that find out how much time it will take to complete everything. Based on that, allocate your time for every subject as well as your other activity.

  • Clear Your Basics

First, you should clear your basic concept by following the NCERT Books and then start off with brushing up on the theories of concepts that you have already covered. Then the topics which are untouched, start with clearing the basic understanding.

  • Make Short Notes

While doing preparation work for NDA, a very large number of books and notes have to be consulted. Therefore, it is better to write short notes which handy and you can revise them without taking much time and which are actually useful and important.

  • Track current Events

All major events that have taken place in India or the world in the last five years are very crucial. Make a habit of watching the news, reading the newspapers, listening to the interviews of famous personalities, keeping track of all the awards and prizes, on a daily basis.

  • Stay fit

You can’t afford to lose health and stamina. Remember that we are talking about National Defence Academy here, you have to treat your health as a priority. Maintain a proper diet filled with nutritious food, regular exercise, or yoga is mandatory and at least 6 - 8 hours of sleep is required as well.

Maths Preparation

How to prepare for the NDA Math section?

  • Mathematics is very important for you if you are planning to face the NDA Exam.
  • Candidates must obtain the speed of making calculations as you can’t afford to waste time in calculations while solving the mathematics section.
  • Start preparing the important topics first, at the same time, delegate time for the difficult topics.
  • For better practice, take previous year papers and sample papers under consideration.
  • Memorize simple calculations such as squares and cubes and learn tips, tricks, and shortcuts for efficient time management.
  • As there is negative marking in the exam, they should mark the answer only if they are sure about it. Do not guess the answers during the exam.
NDA GAT Section

How to prepare for the GAT section of the NDA 2021?

  • While preparing for NDA, get your basic concepts cleared of Physics, chemistry, and biology from the NNCERT Books of Class XI & XII.
  • For History, Civics, and Economics, all you need is to memorize a few major concepts, but nothing tricky.
  • GAT covers the major portion of the NDA test and so, you just can’t ignore any aspect of this section.
  • Go through the syllabus for the GAT section very carefully and prepare for each and every topic mentioned under the heading.
  • For English in this section, brush up on the grammar rules.
SSB Interview

How to prepare for SSB Interview?

SSB Interview is consisting of Intelligence Test and Psychological Test. Go through the following content to get an idea about the SSB Interview:

  1. Maintain both physical and mental health.
  2. Improve your eating habit and hence, have a look at your diet plan. Do exercise regularly.
  3. You should do work hard to improve your English speaking skills
  4. Build a good habit of reading newspapers regularly to enhance your knowledge of English.

NDA Last Minute tips

  • In your last few days, do not go for the uncovered topics. Try to practice the previous year papers and sample question papers.
  • Eat healthy food and sleep for at least 8 hours which will help your mind to stay active and focused.
  • Revise your short notes that you have made while the preparation.
  • Reach the location of the exam centers 1 day before the exam with required documents, which you help you to avoid any possibilities of being late.
  • As you must be knowing that there is a negative marking scheme applicable in the NDA Exam. Therefore, try to avoid making wild guesses in the exam.
  • Invest the exam duration wisely. Go for the easier answers first and do not waste time in predicting answers.
NDA Toppers Tips

Toppers Tips for NDA Preparation 2021

To crack the NDA Exam 2021, the aspirants can go through the following content to get an idea about the toppers’ preparation tips:

Piyush throve: Rank: AIR 16 in NDA 2019

  1. The aspirants should have clear and in-depth knowledge about the subjects
  2. Read thoroughly the NCERT books
  3. Divide the entire syllabus into sections and prepare a routine and then follow it accordingly while studying.
  4. Try to keep yourself calm, do not take stress unnecessarily.

Sparsh Kankane: Rank: AIR 1 in NDA 2018

  1. To get a good score, the aspirants should practice more and work hard
  2. You should have a clear understanding of the exam pattern and the NDA syllabus.
  3. Try to practice previous years' question papers for knowing the pattern of questions.
NDA Books

Recommended Books for NDA 2021 Exam

In NDA 2021, questions are asked from class 12 Mathematics. Also, candidates are required to be aware of the current happenings around the world to attempt a General Ability Test. Some of the recommended books for candidates are mentioned below.

Subjects Books Author
Mathematics Mathematics for NDA and NA: National Defence Academy and Naval Academy R S Aggarwal
Mathematics Quantitative aptitude for competitive examinations RS Aggarwal
English NDA and NA National Defence Academy and Naval Academy Entrance Examination: 10 Practice Sets (English) Expert Compilations
English NDA INA Practice Papers: Conducted by UPSC (English) Sachchida Nand Jha
General Knowledge Objective General Knowledge & Current Affairs (Level 1) Disha Experts
General Knowledge Objective General Knowledge & Current Affairs (Level 2) Disha Experts

NDA Preparation FAQs

Ques. Is the NDA exam difficult?

Ans. The first and the foremost question that hovers in candidates’ minds is if the exam is tough. The NDA exam can be cracked with proper preparation.

Ques. Are NCERT books are enough for NDA exams?

Ans. The NDA exam consists of questions that are of Class 12 standard. Therefore, to clear the basic concepts, NCERT Books are the primary requirements. For advanced preparation, candidates should follow other reference books as well. Read NDA Refence Books

Ques. Is coaching necessary for NDA?

Ans. The coaching is not mandatory for NDA reparation. Candidates can rely on the coaching centers as additional help but the self- study is the ultimate key to success.

3 Months Crash Course

*The article might have information for the previous academic years, please refer the official website of the exam.


how to prepare for nda written exam in 1 month?
kavita rani

Hi Priya. Candidates must do more mock tests and last year papers to do well in the exam. Go through the test series for free during the preparation time before the exam. Most importantly, stay calm, do not take stress unnecessarily. Refer here to get more details.

uday roy
Sir i am Uday 11 class , and arts stream i can fill this from?

HI Uday

You need to be minimum 16 years old to apply for the NDA exam and the upper limit is 19 years but thers is some relaxation for the reserved category. Visit on our official website of NDA Eligibility to check your requirements for the exam.

jyoti ranjan mandal
abdul nazir

Hi Jyoti, NDA cut off for 2020 is yet to be released. For NDA 1, dates of cut off will be announced soon, while for NDA 2, cut off will be released in the month of May 2021. Expected cut off for written exam is around 342 and final cut off will be expected to be at 704. To know more visit NDA 2020 cut off.

Sir, I'm 16.5 and I'm in class 11, will I be eligible to write NDA? By 2022 I'll be completing class 12.

Hello SriHaran,

You give the NDA examination once in 2021 ( NDA-II) and you can also give NDA I in 2022. For more details on eligibility, visit- NDA Eligibility.

aditya kumar
I m in class 11now. Can I fill this form or not?
common admission test

Hii Aditya. No, you can't appear for the NDA Exam now as minimum eligibility for NDA Exam is the aspirants should qualify their class 12 or HSC exam under 10+2 exam pattern. 

shivam gaur
Sir can I selected in the NDA without coaching

Hi Shivam

Yes you can crack NDA exam without coaching if you are dedicated enough and work hard for it. Coaching is not mandatory to crack any exam if you put enough time on yourself with studies and prepare for the exam. You can achieve anything by yourself if you work for it.

All The Best

mohd waseem
I'm in 12th now i am from arts stream I want to give NDA 2021 so can I give it? And how can I prepare for it?

Hello Waseem,

Yes, you can apply for the Army Wing of NDA. For some tips related to how you should be preparing for NDA, kindly visit – NDA Preparation Tips

sagar sachin kulkarni
Respected sir/Mam I have to do preperation of nda I m form std 8 .so please guide me which book we have to take and etc Sagar Sachin Kulkarni . Dhule Maharashtra
arvind kumar

Hi Sagar, you have a lot time to prepare for NDA Exam. For complete guidance and preparation strategy along with the books visit: NDA PREPARATION

amit mishra
Mam I am from commerce stream and maths and physics is tough for me so how I can prepare both subject please help me to make strategy for these subject please mam.

Hello Amit,

You can ace in Maths and Physics by consistent practice. You will have to devote extra time to your weak subjects and make efforts in a smart way. Please visit – NDA Preparation Tips for more tips that will help your strategise your work. 

darshan dayanand mathapati
I'm in 11th now but when I'm appearing in 12th I want to give NDA 1 2021 so can I give it? And how can I prepare for it?
arvind kumar

Hi Darshan, Greetings from Collegedunia. The minimum eligibility for NDA exam is 10+2 with atleast 60%. So, you can give the exam if you fulfill the eligibilty criteria and for more details click here.

How can I crack NDA maths paper with 1 month prepration?
arunava ray
How can I crack NDA maths paper with 1 month prepration?
kavita rani

Hi Arunava. You can easily crack NDA Maths exam in one month. Analyze the last question papers, as it helps check your performance. To get a good score in Mathematics, it is important to clear all the concepts taught in class 11th and 12th. Also, make sure that you remember all the formulas as it will makes the asked questions easy to solve. Study hard to get at least 140 marks. Focus on all the important topics such as Trigonometry, Vectors, Differentiation, Integration, Limits, etc. and practice hard. Revise all the chapters studied daily as it helps memorize all the formulas easily.

ranu kanwar
How do I prepare for the NDA 2020? Is there any effective way for preparation?
kavita rani

Hi Ranu. An affective way for preparation include:

Schedule your Study Plan Smartly

Get best study material

Your Basics Should Be Clear

Focus on General Knowledge and English Subject

Solve Previous Year Question Papers

Health Maintenance and Personality


riyaz sen
How do I prepare for NDA in 20 days and clear it?
kavita rani

Hi Riyaz. Some important points to remember while preparing for the NDA include:

Revise all the chapters of Mathematics.

Don't waste your time understanding the chapters you are weak in.

Look for the ways to clear the cut off rather than trying to top the examination.

Don't waste time reading the GAT part in-depth, rather focus more on English.

Preparing for the English section will help you to clear GAT by English marks alone.

Pay extra efforts.

This is not the time to make a new time table, etc. Rather focus on more important points and leave the rest. Since the exam is approaching, so the last two days before the exam are very crucial. Don’t take any stress and relax your brain.

arunava ray
How can I prepare for NDA in 2 weeks?
kavita rani

Hi Arunava. To be honest, preparing for NDA SSB in two weeks is quite a daunting task but in case you follow the below-mentioned guidelines and strategies, you can prepare for the NDA exam:


Get familiar with the latest syllabus and exam pattern

Start making notes

Do more last year question papers

Revision is important. Revise all the formulas and tricks again.

Also revise your GK notes.

Don’t take stress, take short breaks in between your revisions.

margaret atwood
What are some YouTube channels and websites for NDA preparation?
kavita rani

Hi Marharet.

Some of the best YouTube channels for NDA Preparation include:

Major Kalshi Classes

Sharad Neha Gupt

aHack To Crack NDA


Centurian Defence Academy

Neha mathematics

alok sharma
I got very important information by it
samanuri aparana