Dear Student,

In NDA they ask you about Maths, Physics, Chemistry, Biology, history, geography, english, current affairs, GK, etc.

And this paper is divided into two part, in part part they will ask you the questions from maths only which consist of total 120 question. And in second part, it is also divided into two parts, in first there is consist of 50 questions of english and rest 100 will include all the subject like physics, chemistry, geography, history, gk , etc.

In you need to clear both the main part otherwise you will not be able to clear the entrance. Passing marks are lie between 25% to 30% depends upon the difficulty of paper.

You can take the help of youtube, there you will be find different channels where they teach NDA in a effective way and they cover all the syllabus.

And the second option is that you can join any coaching institute of your area and continue the self preparation, as NDA is not that much tough exam compare than JEE.

Good Luck :)