Hello aspirant,

Hope you are doing great....!!!

For NDA Exam, the general science, history, or geography section comprises topics that are related to Class 9th and 10th. Biology candidates may refer to objective GK by Sanjiv Kumar.

The history part consists of questions from the time of British India or even before that. Geography consists of the general knowledge questions related to crops, seasons, population, rivers, national parks, etc of different states either in the form of matching the column type or direct multiple choice. So Class 9th and 10th NCERT is enough.

I hope this information helps you!

All the best:)