Hello Pulkit,

Here are some of the best books for NDA exam according to the syllabus and subjects.

MATHEMATICS:

Quantitative Aptitude For Competitive Examination by RS Aggarwal

Mathematics For NDA/NA by RS Aggarwal

Pathfinder NDA and NA by Arihant Publication

CHEMISTRY:

For this particular subject, you have to read class 11 and 12 NCERT books for the preparation.

PHYSICS:

For Physics also, you have to read class 11 and 12th NCERT books.

ENGLISH:

Objective General English by SP Bakshi

GENERAL ABILITY TEST:

NCERT Textbooks from Class 9

Success Series General Knowledge by Sachchida Nand Jha

CURRENT AFFAIRS:

Pratiyogita Darpan/Competition Sucess Review

Along with reading this books, you can solve previous papers to test your knowledge.

You also have to make all your basics clear to excel in the examination.

You can also check following link for more Information: https://competition.careers360.com/articles/best-books-prepare-for-nda

Best of Luck!!!